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LUAI KNOWLEDGE

AI Knowledge

Understand the essential concepts of artificial intelligence through clear, approachable explanations.

✦Lu
人工智能

AI

Machines that see, hear, talk, and decide – like a helpful assistant, but with no feelings or self‑thought.

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◈AI
通用人工智能

AGI

AGI is a human-like artificial intelligence that can understand, learn, and solve any problem across any field.

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💬Lu
The art of asking AI

Prompt

A prompt is simply what you say to an AI. It decides the quality of the answer — same model, different wording, very different results.

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◎AI
AI 智能体

AI Agent

A self‑directed AI that plans, uses tools, and executes tasks—far more than a chat‑only model.

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◇Lu
大语言模型

LLM

A massive probabilistic text predictor that plays “word chain” at superhuman speed, powered by trillions of training examples.

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✿AI
AI 生成内容

AIGC

AI autonomously generates text, images, audio, and video—lowering the entry barrier to just giving a clear instruction.

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▣Lu
检索增强生成

RAG

AI retrieves relevant info first, then generates answers—cutting hallucinations and making responses more trustworthy.

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△AI
Machine Learning

机器学习

Computers learn patterns from data on their own, instead of following hand‑coded rules.

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⬡Lu
Deep Learning

Deep Learning

A multi‑layer neural network fueled by massive data and compute, automatically extracting features without human hand‑holding.

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⚙AI
Fine-tuning

Fine-tuning

A small amount of domain data turns a general‑purpose AI into your expert for specific tasks.

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◐Lu
Knowledge Distillation

Knowledge Distillation

Compresses a large model's reasoning into a small one—10x faster with only a slight performance dip.

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☁AI
AI Hallucination

AI Hallucination

Large models confidently spit out made‑up facts—sounds real, but it’s just a probabilistic game.

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⌁Lu
AI Reasoning

Thinking and Reasoning in AI

Force the AI to write out solving steps first—accuracy soars, but it’s still just probabilistic pattern‑matching.

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◉AI
Embodied AI

Embodied AI

Gives AI a physical body, letting it learn true skills through direct bumps and falls in the real world.

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🌍Lu
Teaching AI how the world works

World Model

A world model tries to predict what happens next — not the next word, but the next state of the world. It's the piece that could give AI a sense of physics and cause-and-effect.

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🔤AI
The smallest unit of AI language

Token

A token is the smallest unit of language an AI works with. Models don't read letters — they chop text into tokens first, which is why they bill by usage and cap your length.

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🤝Lu
Making AI accessible to everyone

AI for All

AI for all means AI should no longer be a privilege of a few big companies, but something everyone can afford and actually use. Open models and affordable compute are pushing it from a handful of industries into every industry.

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👥AI
A team of AI agents working together

Multi-Agent System

A multi-agent system turns several AI agents into a "virtual team", each owning a piece of the work, to handle complex jobs a single AI struggles with.

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💹Lu
The economy built on AI

Intelligent Economy

The intelligent economy is a new kind of economy driven by AI and powered by data as a key input — where AI stops being a tool and becomes infrastructure, like water or electricity.

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🎯AI
Reinforcement Learning from Human Feedback

RLHF

RLHF steers a model's behavior using human preference rankings. It's one of the core techniques that makes AI output safer and better aligned with what people actually want.

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📚Lu
Teaching a model to follow instructions

Supervised Fine-Tuning

Supervised fine-tuning (SFT) continues training a base model on high-quality question–answer pairs, so it learns to follow instructions and produce proper formats — the step from "can talk" to "can work".

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🎯AI
The craft of asking AI well

Prompt Engineering

Prompt engineering is the craft of asking an AI well. With the same model, a good prompt can lift accuracy from 61% to 95%.

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🧠Lu
Building the AI's information environment

Context Engineering

Context engineering is the discipline of managing an AI's "memory": retrieval, ordering, caching and token budgets. It decides how smart, cheap and reliable a complex agent can be.

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🔬AI
AI as the scientist's supercharger

AI for Science

AI for Science puts AI into the whole research loop — from generating hypotheses to designing experiments — speeding up breakthroughs in drugs, materials and climate.

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🚀Lu
Running a whole business solo

One Person Company

With AI as your virtual staff, one person can now handle design, engineering, operations and support — and run it all as a real business.

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⚡AI
Homegrown chips and super-clusters

Autonomous Computing Power

A systemic upgrade of domestic AI chips and superclusters that keeps the fuel of AI — compute — firmly in your own hands.

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🎨Lu
AI that makes, not just recognizes

Generative AI

AI that can produce brand-new text, images, video and audio — the real starting point of this AI boom.

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🧭AI
Making AI want what we want

Alignment

Keeping an AI's behavior in line with human values and intent — the core safety problem across an AI's whole life cycle.

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🧠Lu
CoT — thinking out loud

Chain of Thought

Have the AI write out its reasoning step by step before answering, and its accuracy on hard problems jumps.

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💬AI
Programming by feel, with AI

Vibe Coding

Writing code by describing what you want in plain language, while AI generates the actual code — programming on vibes.

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🔗Lu
Models anyone can download and remix

Open-Source Large Model

Publishing a model's weights and code so anyone can download, modify and build on it — Chinese open-source models have passed 10 billion downloads worldwide.

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📊AI
Data as a factor of production

Data Element

Formally recognizing data as a key factor of production alongside land and labor — 2026 was named China's "year of unlocking data value."

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🧩Lu
MCP — the USB-C for AI tools

Model Context Protocol

An open standard from Anthropic that lets AI models plug into external tools and data sources, like a universal connector.

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📚AI
An AI that can hold a whole book

Long Context

Letting an AI handle millions of tokens of context at once — 78% of enterprise buyers rank it their top requirement when choosing a model.

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🧠Lu
Models that think before answering

Reasoning Models

A model that "thinks" before answering — more compute buys more accuracy, at the cost of sometimes overthinking.

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🎲AI
Learning by trial, error and reward

Reinforcement Learning

Reinforcement learning trains a system through trial and error and reward signals, teaching it an optimal strategy. It's the foundation behind RLHF and reasoning models.

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🗑️Lu
AI filler that just adds work

Workslop

Workslop is low-quality, AI-generated work output that isn't just useless — it dumps extra work on your colleagues.

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😰AI
Fear of Being Obsolete

FOBO

FOBO is the "fear of being obsolete" stirred up by rapid AI progress — a deeper, more draining shake of identity than ordinary job anxiety.

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👁️Lu
AI that sees, hears and reads

Multimodal

Multimodal AI understands and generates text, images, audio and video together, perceiving the world the way people do.

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💤AI
Outsourcing your thinking to AI

Thinkslop

Thinkslop is the "mental laziness" that comes from over-relying on AI — outsourcing your thinking, and quietly letting your skills decay.

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⚖️Lu
Aligning a model without a reward model

Direct Preference Optimization

DPO optimizes a model directly from human-preference data, skipping the reward model — simpler and cheaper than RLHF.

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🧰AI
An AI trained for one industry

Domain-Specific Language Model

A domain-specific language model is trained for one industry — telecom, finance, medicine or law — using terms more precisely and fitting real business better.

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🧩Lu
Thousands of chips as one machine

Super Node

A super node integrates hundreds or thousands of AI chips into one giant supercomputer — the compute backbone for training frontier models.

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💬AI
Teaching machines to read and speak human

Natural Language Processing

Natural language processing lets computers understand and generate human language — the foundation under voice assistants, translation and ChatGPT.

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👁️Lu
Teaching machines to see

Computer Vision

Computer vision teaches machines to make sense of images and video: recognizing objects, understanding scenes and tracking motion. It's the eyes behind self-driving cars, security cameras and medical imaging.

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🎙️AI
Turning speech into text

Speech Recognition

Speech recognition turns what you say into text. It's the core ability behind voice assistants, captions and transcription — the thing that lets machines "hear" human speech.

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🗣️Lu
Teaching machines to talk

Text-to-Speech

Text-to-speech turns text into natural human speech. It's what lets AI "open its mouth" — from audiobooks to navigation prompts, the voices sound more human every year.

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🎨AI
Generating images from noise

Diffusion Model

Diffusion models generate images by adding noise and then removing it. They're the core engine behind text-to-image tools like Midjourney and Stable Diffusion.

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🧱Lu
The architecture behind every LLM

Transformer

A neural architecture introduced in 2017 that processes sequences in parallel via the attention mechanism. Nearly every large language model today is built on it.

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🎯AI
Teaching models where to look

Attention Mechanism

The attention mechanism lets a model "focus" on the more relevant words in a sentence as it processes each one. It's the soul of the Transformer and the key to context understanding in large models.

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🪜Lu
Fine-tuning on a budget

LoRA

LoRA trains just a small set of added parameters to teach a large model a new task, turning fine-tuning from a money pit into the price of a coffee.

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📦AI
Shrinking models to run anywhere

Quantization

Quantization compresses model parameters from high-precision floats into low-bit integers, slimming models down, speeding them up and saving memory — the key to running big models locally.

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⚡Lu
Speeding up generation without losing quality

Speculative Decoding

Speculative decoding has a small model draft and a big model review. It speeds up large-model generation 2 to 3 times without changing the answer.

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📱AI
AI that runs on your gadget

On-Device AI

On-device AI runs the model locally on your phone, laptop or car — no internet needed, and it's faster, cheaper on data and better for privacy.

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🔗Lu
A shared language for AI agents

Agent-to-Agent Protocol

An agent-to-agent protocol (A2A) sets common rules so AI agents from different vendors and platforms can discover, talk to and work with each other — a shared language for AI.

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📦AI
The engine behind semantic search

Vector Database

A vector database stores and retrieves vectors — the engine behind RAG, semantic search and recommendations that lets AI find things by meaning rather than by keyword.

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🧮Lu
Turning meaning into numbers

Embedding

An embedding turns text, images or audio into a numeric vector whose similarity can be compared — the first building block for how AI understands meaning, search and recommendations.

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🎯AI
Teaching a model to follow orders

Instruction Tuning

Instruction tuning trains a model on lots of instruction–answer pairs so it better understands what you want — turning it from a sentence-finisher into a good listener.

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⚖️Lu
Giving an AI a written constitution

Constitutional AI

Constitutional AI, proposed by Anthropic, hands a model a written set of principles, then has it critique and correct itself against them — cutting out a lot of human labeling.

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🛡️AI
Attacking AI to make it safer

Red Teaming

Red teaming plays the attacker on purpose, hammering an AI with adversarial and leading questions to surface safety gaps, biases and holes before anyone else can.

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👁️Lu
Opening the AI black box

Explainable AI

Explainable AI (XAI) makes a model's decisions transparent, understandable and traceable — no longer a black box that gives answers without reasons.

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🧭AI
When AI inherits our prejudices

Algorithmic Bias

Algorithmic bias is when an AI treats certain groups in systematically unfair ways because of skewed training data or flawed design — a problem that needs watching and fixing.

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🕸️Lu
Train together, keep data at home

Federated Learning

Federated learning keeps data local and sends only model updates back to a server, so many parties can train together without ever sharing raw data.

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🔐AI
A math shield for individual privacy

Differential Privacy

Differential privacy adds carefully tuned noise to data or outputs, so nobody can reverse-engineer a specific person. It's a mathematical way to protect individual privacy.

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🧬Lu
AI-generated training data

Synthetic Data

Synthetic data is fake data generated by AI that looks real but contains no real personal information. It fills gaps where real data is scarce and sidesteps privacy and compliance risks.

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🧾AI
Labeling data so models can learn

Data Annotation

Data annotation is labeling raw data — telling the AI “this is a cat, that's a dog”. It's the foundation of supervised learning, and label quality sets the ceiling for how good the model can get.

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🧰Lu
Cleaning up before training

Data Cleaning

Data cleaning is the pre-training deep clean: removing duplicates, noise and errors to turn messy data into a clean training set a model can safely eat.

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📊AI
The AI's standardized exam

Benchmarking

Benchmarking scores models on a standardized set of tests, so different models can be compared with the same ruler. It's a key basis for choosing and releasing models.

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🔗Lu
Anchoring answers to reality

Grounding

Grounding anchors a model's answers to real data or retrieved sources instead of letting it improvise. It's a key lever for cutting hallucinations.

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🎚️AI
The randomness dial

Temperature

Temperature is the dial that controls a model's randomness: lower means steadier and more conservative, higher means more creative. Code and poetry want different temperatures.

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🎲Lu
Sampling by cumulative probability

Top-p Sampling

Top-p (nucleus) sampling draws from the smallest set of words whose cumulative probability reaches p, adapting the candidate pool on the fly — more flexible than a fixed Top-k.

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🧱AI
Making models return parseable data

Structured Output

Structured output makes a model return results in a fixed format like JSON Schema, turning free-form text into data a program can parse directly.

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🔗Lu
Letting the model act, not just talk

Function Calling

Function calling gives a model hands: when it needs live data or must do something, it asks — in a structured way — for a function to be called, and your code runs it.

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🧠AI
Reasoning and acting in a loop

ReAct Pattern

ReAct alternates reasoning and acting in a loop — the agent thinks a step, calls a tool, checks the result, and repeats until it reaches an answer. It's the default mode for many agents.

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🗂️Lu
Plan first, then work the list

Plan-and-Execute Pattern

Plan-and-execute takes a moment to break a big task into a clear checklist, then works through it one step at a time. It suits long, multi-step jobs.

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🔍AI
Learning from your own mistakes

Reflexion Pattern

Reflexion has an agent review its own run after finishing, find what went wrong, and try again carrying those lessons — getting better each loop.

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⚡Lu
What the agent holds for this session

Short-Term Memory

Short-term memory is the context an agent holds for the current session — it remembers what was just said, but clears when the session ends, like a person's working memory.

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📦AI
Memory that survives the session

Long-Term Memory

Long-term memory persists across sessions, usually in a vector database or external storage, so the agent can recognize you and remember your preferences next time.

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🧭Lu
One manager, many workers

Supervisor Pattern

In the supervisor pattern, one main agent acts as manager: it splits work among several sub-agents and merges their results. It fits complex, parallelizable tasks.

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🕸️AI
Equals who work it out together

Peer-to-Peer Pattern

In peer-to-peer, multiple agents cooperate as equals and talk directly to each other — no central controller. They finish a shared goal through negotiation and messaging.

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🛡️Lu
A hidden command inside the input

Prompt Injection

Prompt injection hides a malicious instruction inside input to trick an agent into ignoring its rules and doing something it shouldn't. It's one of the most common attacks on LLM apps.

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🔐AI
An isolated cage for running code

Sandboxing

Sandboxing isolates an agent's code execution environment so it runs in a controlled cage, keeping malicious or buggy code from affecting the host system.

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🧩Lu
Splitting documents for better search

Chunking

Chunking splits long documents into small, self-contained pieces so retrieval hits the right spot — the foundation of good RAG.

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🔗AI
Keyword + vector, together

Hybrid Retrieval

Hybrid retrieval fuses keyword search's precision with vector search's sense of meaning, so RAG recalls results that are both accurate and complete.

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🎚️Lu
A second, stricter pass

Reranking

Reranking re-sorts the first-pass results with a stricter model, lifting the most relevant answer to the top — one of RAG's best value-for-money steps.

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💡AI
Cleaning up questions before search

Query Rewriting

Query rewriting reshapes a casual question into something search can work with — resolving references and cleaning up wording so the system hits the target.

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🧵Lu
Searching as the conversation goes

Multi-Turn Retrieval

Multi-turn retrieval searches repeatedly across a conversation and tops up context on the fly, so an AI keeps every answer current and complete.

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🧠AI
A few experts per request

Mixture of Experts

MoE splits a model into many "experts" and activates only a few per request, trading a fraction of the compute for giant-model performance.

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📦Lu
Small enough to run in your pocket

Small Language Model

A small language model packs far fewer parameters yet runs locally — fast, frugal and private, ideal for on-device assistants and vertical tasks.

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🗂️AI
Never recompute what's already done

KV Cache

The KV cache stores attention key–value pairs so nothing gets recomputed during token-by-token generation — trading memory for far faster inference.

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⚡Lu
Attention, faster and lighter

FlashAttention

FlashAttention rethinks attention with tiling and recomputation, slashing memory use and speeding up compute — now standard for long-context models.

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🚀AI
A faster way to serve LLMs

vLLM

vLLM is a high-throughput, open-source inference engine that pages VRAM with PagedAttention, letting one GPU serve far more concurrent requests.

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⚙️Lu
A fast language for structured LLM output

SGLang

SGLang is an open-source framework for structured generation: it pairs a small constraint language with a fast inference backend so complex output like JSON and function calls comes out fast and well-formed.

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🧩AI
Adapt a model with a tiny fraction of weights

Parameter-Efficient Fine-Tuning

Parameter-efficient fine-tuning (PEFT) freezes most of a model and trains only a tiny set of new parameters, so a big model learns a new task while saving memory, time and letting one base serve many specialist add-ons.

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🧮Lu
Fine-tune big models on a single GPU

QLoRA

QLoRA bundles quantization and LoRA into one trick: it squeezes big-model fine-tuning onto a single consumer GPU, cutting memory by an order of magnitude with quality that barely drops.

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🪜AI
Teach the model easy things first

Curriculum Learning

Curriculum learning borrows the human habit of learning easy things first. It orders training data from easy to hard so a model builds its foundation before tackling the tough stuff, converging more steadily and learning better.

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🧬Lu
More training data, without collecting more

Data Augmentation

Data augmentation turns one sample into several — flipping, rotating, adding noise, rewriting or synthesizing — to produce new examples that are similar but not identical. It's one of the cheapest tricks around when data is scarce or expensive.

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⚖️AI
Using one model to grade another

LLM-as-a-Judge

LLM-as-a-Judge uses one large model to automatically grade another model's output, turning expensive, slow human evaluation into a scalable, reproducible pipeline.

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🧪Lu
A benchmark built from real GitHub issues

SWE-bench

SWE-bench takes real GitHub issues and their fixes and uses them to test AI: hand the model a bug report and a code repo, and see whether it can hunt down the problem and write a patch like an engineer.

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🌐AI
A benchmark of real web tasks

WebArena

WebArena builds a dozen realistic websites and asks AI to do real tasks — book a flight, reset a password, browse a forum — by clicking, filling and navigating like a person. It's the test of whether AI can actually work the web.

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👁️Lu
AI that sees and talks

Vision-Language Model (VLM)

A vision-language model (VLM) both reads images and writes words. Show it a photo and it can describe it, answer questions about it, or even reason over what's inside — it's AI with its eyes and mouth wired together.

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🧩AI
One model for eyes, ears and words

Multimodal Large Language Model

A multimodal large language model packs text, images, sound and even video into one model. It can hear, see, read and speak — connecting the senses in a single system, and a big step toward general-purpose AI.

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🎨Lu
Type a sentence, get a picture

Text-to-Image

You write a sentence, it paints a picture. Text-to-image turns descriptions into images — from "a cat in a spacesuit" to a cyberpunk street — in seconds.

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🎬AI
A sentence becomes a clip

Text-to-Video

One sentence, one moving clip. Text-to-video turns descriptions into continuous footage, taking AI from drawing still images to shooting moving scenes.

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🧱Lu
A sentence becomes a 3D object

Text-to-3D

One sentence, one 3D model you can spin around. Text-to-3D turns descriptions into 3D assets, changing how games, films and product design get built.

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🤖AI
A machine that walks like us

Humanoid Robot

A robot with a human shape and human movement. Humanoid robots pair a body built for our world with an AI brain, aiming to step into factories and homes as general-purpose labor.

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⚙️Lu
The Android of robots

Robot Operating System (ROS)

ROS is the 'Android for robots' — an open-source framework that packages hardware abstraction, messaging, perception and navigation so robot builders don't reinvent the wheel.

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🧭AI
From virtual training to the real world

Sim-to-Real

Train a robot to perfection in simulation, then let it loose in reality. Sim-to-Real is the art of moving skills learned in a virtual world onto a real machine.

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⚡Lu
Graphics Processing Unit

GPU

The GPU began as the chip that renders games. Because it's so good at parallel computing, it became the workhorse hardware for training AI models.

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🧮AI
Tensor Processing Unit

TPU

TPU is Google's custom chip built for machine learning, aimed at tensor math — the workhorse behind training and serving Google's big models.

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📱Lu
Neural Processing Unit

NPU

An NPU is a processor purpose-built for neural-network inference, sipping so little power it lives inside phones, earbuds and cameras — and runs AI offline.

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🧱AI
High Bandwidth Memory

HBM

HBM stacks memory chips into a tower next to the processor, giving AI chips an extreme data-transfer rate.

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🧯Lu
The great memory crunch

RAMageddon

The AI boom sent demand for memory chips soaring, causing global shortages and price spikes — a crunch people nicknamed RAMageddon.

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🌐AI
AI Data Center

AI Data Center

An AI data center is a facility purpose-built for AI workloads, with power, cooling and networking rebuilt around GPU clusters — the new infrastructure of the AI age.

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🕸️Lu
Computing Power Network

Computing Power Network

A computing power network ties scattered compute resources together like a power grid — allocating on demand and billing centrally — turning compute into a utility you can tap anytime.

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🛡️AI
Slipping past the guardrails

Jailbreak

A jailbreak uses carefully crafted prompts to slip past an AI's safety limits and coax out answers it should refuse — one of the toughest battles in model safety.

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🎭Lu
Adversarial Example

Adversarial Example

An adversarial example is an input tweaked almost invisibly to humans, yet enough to make an AI misread or misjudge — the clearest proof of how brittle models can be.

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⚖️AI
Data Governance

Data Governance

Data governance systematically manages a dataset's quality, security, compliance and lifecycle, turning data from a messy pile into a reliable, usable asset.

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⚖️Lu
The EU's rulebook for AI

AI Act

The AI Act is the EU's first rulebook for artificial intelligence. It sorts AI uses by risk level — the riskier the application, the tighter the rules, from outright bans to simple transparency.

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🛡️AI
Ethics as a default, not an afterthought

Responsible AI

Responsible AI is a set of ethical principles — fairness, transparency, privacy, safety and accountability — that runs through the whole AI lifecycle, from development to deployment.

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🪜Lu
When the AI upgrades itself

Recursive Self-Improvement

Recursive self-improvement is the idea of an AI improving itself without human help, getting stronger each round. It's the key — and most unsettling — step on the path toward superintelligence.

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🧠AI
Reasoning you can't watch

Opaque Recurrence

Opaque recurrence has a model think without "saying" it — looping the problem through itself many times and answering directly. A cheaper, faster form of hidden reasoning.

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🎚️Lu
The dial for hidden reasoning

Recurrent Depth

Recurrent depth is the dial on opaque recurrence — how many times those internal layers get looped. More loops, deeper thinking, and more compute and time spent.

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🧾AI
Running AI on a budget

Token Economy

The token economy turns every AI expense into a token ledger: what's burning money, where to save, and how to spend smart. It's the basic cost discipline of the AI era.

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⚡Lu
How fast the AI really works

Token Throughput

Token throughput is how many tokens a system can process per second. It decides how fast answers arrive and whether the service survives heavy load — the core metric of inference performance.

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🗂️AI
Caching by meaning, not by text

Semantic Caching

Semantic caching doesn't need an exact match — it recognizes "same question, different words" and reuses the old answer, saving the cost of recomputing.

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🧭Lu
The front door for all your agents

Agent Gateway

An agent gateway is the single front door for every AI agent request — handling auth, rate limits, routing and monitoring so hundreds of agents come and go in order.

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👁️AI
An AI that drives your screen

Computer Use

Computer Use lets an AI see the screen and click like a person — driving browsers and desktop apps through screenshots and pixel-level reasoning. It turns "can talk" into "can do".

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🌐Lu
Driving a real browser by script

Browser Automation

Browser automation lets an agent drive a real browser — clicking, filling forms, scraping — so tedious hand-clicking becomes something a program does for you.

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🛡️AI
The agent's emergency brake

Kill Switch

A kill switch is an emergency brake for an agent — one press (or an automatic rule) stops it before a runaway run causes real damage.

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🧮Lu
Repeat it, but don't double-count it

Idempotency

Idempotency means doing the same operation once or ten times gives the same result — the foundation for an agent's tool calls to be safely retried.

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🔐AI
Just enough access, nothing more

Least Privilege

Give an agent only the minimum permissions needed for the job at hand, shrinking the damage it can do if something goes wrong.

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⚖️Lu
One generates, another audits

Critic Pattern

One agent generates, another exists purely to audit and criticize — a good-cop / bad-cop setup that polishes the output into something more reliable.

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🧲AI
Everyone waits, nobody moves

Deadlock

When several agents each wait on a resource or action held by another, nobody budges and the whole system freezes in place.

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🔁Lu
Running in circles

Loop

An agent gets stuck doing the same thing over and over — act, check, still not good enough, act again — and never reaches the goal.

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🧯AI
An automatic trip switch

Circuit Breaker

When an agent keeps failing, a circuit breaker automatically cuts its execution path so one small fault doesn't snowball into a system-wide disaster.

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🎯Lu
Learn a task from a few examples

Few-Shot Learning

Show a model a few input→output examples and it picks up a new task on the spot — no retraining required.

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🧠AI
No examples, just instructions

Zero-Shot Learning

Give a model no examples at all — a clear instruction is enough for it to handle a task it's never seen, thanks to the general understanding it picked up in training.

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🧩Lu
Learning from examples, no training

In-Context Learning

In-context learning (ICL) lets a model pick up a new task on the spot from a few examples in the prompt — no weights change, no training needed.

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🌳AI
Reasoning across many branches

Tree of Thoughts

Tree of Thoughts (ToT) has the model explore several reasoning branches at once, compare them, backtrack, and pick the best path — like a chess player thinking ahead.

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👤Lu
A human checkpoint in the automation

Human-in-the-Loop

Human-in-the-loop (HITL) pauses an AI at key moments to wait for a person to confirm or correct, weaving human judgment into automation for both speed and safety.

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🔗AI
The LLM app framework

LangChain

LangChain packages chaining, memory, tools and agents into building blocks for LLM apps — the de facto standard framework for building with large language models.

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🕸️Lu
Agents as a graph

LangGraph

LangGraph orchestrates agents as a graph — nodes are steps, edges are flow, and state is inspectable and backtrackable. Built for complex, multi-step, multi-agent work.

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🤖AI
Microsoft's multi-agent framework

AutoGen

AutoGen is Microsoft's open-source multi-agent framework: several AI roles talk, check each other's work and push a task from a single sentence to a finished result.

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🎭Lu
Build an AI team with roles

CrewAI

CrewAI assigns each agent a role and a task, building a multi-agent system the way you'd staff a real team — goals, division of labor, collaboration. Made for business automation.

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🔍AI
Fast vector similarity search

FAISS

FAISS is Meta's open-source library for fast vector similarity search — it indexes huge collections of vectors and finds the most similar batch in milliseconds, making it a cornerstone of RAG.

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📦Lu
The vector database

Milvus

Milvus is a distributed database built for vectors — it stores and queries billions of them fast, with indexing and scaling built in, making it a common foundation for production RAG.

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🧲AI
Finding the closest points

Nearest Neighbor Search

Nearest neighbor search finds the points closest to you in vector space — the shared foundation behind recommendation, retrieval, RAG and every "find similar" feature.

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🔍Lu
Completeness of retrieval

Recall

Recall measures how complete a search is — of all the documents that are actually relevant, how many did the system manage to find.

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🎯AI
Accuracy of retrieval

Precision

Precision measures how accurate a search is — of all the results returned, what fraction is actually relevant.

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🔗Lu
Merging rankings by reciprocal rank

Reciprocal Rank Fusion

Reciprocal Rank Fusion merges several retrieval lists into one ranking, scoring by reciprocal rank — simple, noise-tolerant, and a common hybrid-search strategy.

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🛑AI
The signal that ends generation

Stop Token

A stop token is a special marker that ends generation when the model produces it — key to controlling output length, avoiding rambling and saving cost.

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📡Lu
Seeing the answer as it's written

Streaming

Streaming shows results as they're generated, pushing a long answer token by token in real time and slashing perceived latency.

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⚙️AI
The AI's standing rules

System Prompt

A system prompt is the global rule and role definition set for a model — it applies across every turn with higher priority, the invisible constitution of an AI's identity and limits.

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🎲Lu
The model's raw confidence

Logprobs

Logprobs are the log-scale confidence distribution over the next token — the underlying signal for measuring uncertainty, sampling and hallucination detection.

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🛡️AI
Computing together without sharing data

Secure Multi-Party Computation

Secure multi-party computation lets several parties compute together without exposing their data, using secret sharing and on-share arithmetic to get privacy plus a correct result.

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🔐Lu
Computing on encrypted data

Homomorphic Encryption

Homomorphic encryption computes directly on encrypted data, letting a cloud "compute without seeing" — privacy and compute power at once.

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🧱AI
The general-purpose AI base

Foundation Model

A foundation model is a general-purpose model pretrained at massive scale — the shared base for downstream apps and the root of this AI boom.

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💬Lu
An AI built to hold a conversation

Chat Model

A chat model is an AI built for multi-turn conversation — it remembers context, reads tone, and makes the back-and-forth feel human.

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🛠️AI
An AI that writes, fixes and explains code

Code Model

A code model is an AI trained on code — it generates, completes and debugs, and it reads your whole project's context, making it a programmer's copilot.

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🔢Lu
Turning meaning into numbers

Embedding Model

An embedding model turns text and images into vectors — strings of numbers — so things with similar meaning sit close together in math. It's the foundation of search, recommendations and RAG.

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📊AI
Fine-picking the best search results

Reranker Model

A reranker takes the candidate results from a first-pass search, fine-sorts them, and pushes the most relevant one to the top — a key piece for search and RAG precision.

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🚀Lu
Plugging AI into every industry

AI+

"AI+" isn't a new technology but a wave of penetration: it plugs AI into manufacturing, healthcare, education, agriculture and more, rebuilding traditional industries with AI.

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🎯AI
A specialist for one field

Vertical Model

A vertical model is a specialist: it doesn't try to know everything, but goes deep in one industry or use case, doing sharper work with fewer parameters.

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🛡️Lu
AI you can actually rely on

Trustworthy AI

Trustworthy AI isn't a slogan but a set of hard requirements — safety, fairness, transparency, traceability and accountability — so people can hand AI the important things.

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🧪AI
Write the test before the code

Test-Driven Development

Test-driven development flips the order: write the test first, then the code that makes it pass, using each red-to-green cycle to force out a clearer, more reliable design.

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🔗Lu
Merge often, check automatically

Continuous Integration

Continuous integration has developers merge into the main branch often, with tests and builds running automatically — problems surface early and integration never explodes. It's the foundation of software delivery.

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🤖AI
Your AI pair programmer

GitHub Copilot

GitHub Copilot is your AI pair programmer: it completes code, answers questions and writes tests right in your editor, turning coding from typing into "describe and confirm."

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⚡Lu
The AI-native code editor

Cursor

Cursor is an AI-native code editor built on VS Code, with autocomplete, chat-driven edits and project-wide changes baked in instead of bolted on.

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🤖AI
Anthropic's terminal coding agent

Claude Code

Claude Code is Anthropic's terminal AI coding assistant — like a senior engineer living inside your repo, able to read and edit files, run commands, and carry tasks to completion.

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🔍Lu
A second pair of eyes on your code

Code Review

Code review is how humans check each other's code before merging. AI adds a second pair of eyes that scans changes in seconds for bugs, security holes and readability issues.

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🛠️AI
Finding bugs with an AI partner

Debugging

Debugging is the old craft of hunting down why code misbehaves. With AI, you can paste an error, trace the logic and get a fix in minutes instead of hours.

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🧱Lu
Tidy up without changing behavior

Refactoring

Refactoring is tidying up code without changing what it does — renaming, splitting functions, removing duplication. AI does this tedious, fiddly work fast and safely.

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🧪AI
AI writes your test cases

Unit Test Generation

Unit tests verify the smallest pieces of code. AI can read a function and generate test cases automatically, covering the edge cases humans tend to skip.

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🧭Lu
Breaking big goals into steps

Planning

Planning is an agent's ability to break a big, fuzzy goal into small, executable steps. The bigger the goal, the more planning decides whether an agent delivers or flails.

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🧰AI
Choosing the right tool for the job

Tool Selection

Tool selection is an agent's ability to pick the right tool from a set of available ones. Choosing well saves calls and gets the job done; choosing wrong wastes effort or botches the task.

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👁️Lu
Reading results before the next move

Observation

Observation is the step where an agent reads a tool's output and updates its own state. It's the linchpin of the act–feedback–adjust loop.

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🧲AI
Grabbing key facts from conversation

Entity Extraction

Entity extraction pulls key facts out of a conversation — names, dates, preferences, progress — and stores them in long-term memory so the AI doesn't ask you twice.

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🧠Lu
Compressing chat into a short recap

Summary Memory

Summary memory compresses a long conversation into a short recap and stores that instead of the raw log, so an AI can remember what was said at a fraction of the token cost.

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🗂️AI
An AI's log of lived experience

Episodic Memory

Episodic memory records the concrete events an agent has lived through — what happened, when, and how it turned out — giving an AI its own store of experience to learn from past wins and failures.

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📚Lu
The AI's store of facts and concepts

Semantic Memory

Semantic memory stores facts and concepts detached from any scene — definitions, rules, common sense. It's the AI's knowledge base, complementing episodic memory to form an agent's long-term memory.

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🧪AI
The answer key for grading AI

Golden Dataset

A golden dataset is a small, human-labeled test set everyone agrees is correct. It's the yardstick for measuring AI quality and stopping a model from getting worse with each change.

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⚖️Lu
Letting data pick the better version

A/B Testing

A/B testing splits users randomly into two groups, shows each a different version, and compares which performs better — making decisions with data instead of gut feeling.

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👁️AI
Real people grading AI output

Human Evaluation

Human evaluation has real people score AI output, flag flaws and leave feedback — the final yardstick for whether it's useful, safe, and reads like a human wrote it.

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⚙️Lu
Machines grading AI output at scale

Automated Evaluation

Automated evaluation uses a program or another model to score AI output and catch errors, running through thousands of samples in seconds. It's fast and scalable — the volume counterpart to human evaluation.

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🧩AI
Small independent services, one job each

Microservices

Microservices split a big AI system into small, independent services — each developed, deployed and scaled on its own, so one failure doesn't sink the whole and one change doesn't force a full redeploy.

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⚡Lu
Run code on demand, pay for what you use

Serverless

Serverless means you stop managing servers: code is triggered on demand and released when done, and you pay only for the time it actually runs — a great fit for the occasional inference or function.

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📦AI
Pack the app and its environment together

Containerization

Containerization packages an AI app together with its dependencies and environment into a standard, portable unit, so dev, test and production run identically — no more 'it works on my machine'.

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⚙️Lu
Orchestrating your containers

Kubernetes

Kubernetes is the dispatcher for your containers: it schedules, scales and self-heals, and it's the foundation that keeps AI models running reliably in production.

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🚀AI
Turning a model into an API

Inference Service

An inference service wraps a trained model into an API you can call anytime, so apps get predictions in milliseconds — the step that moves a model from the lab into production.

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🗂️Lu
Git, but for models

Model Versioning

Model versioning manages models the way Git manages code: every training run, parameter and dataset is traceable, so you can reproduce, compare and roll back anytime.

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🎚️AI
Rolling out a little at a time

Canary Release

Like a canary in a coal mine, a canary release lets a small slice of real users try a new model first, then ramps up once it's proven — keeping rollout risk low.

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📊Lu
Watching your model in production

Model Monitoring

Deploying a model isn't the end — it's the start of the watch. Model monitoring keeps eyes on performance, latency and output quality, catching problems before they get worse.

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📡AI
When the world moves on without your model

Data Drift

When real-world data quietly changes while the model stays in the old world, that's data drift — the silent reason models start to fail.

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⏳Lu
When a model slowly goes stale

Model Decay

Models don't stay young forever. As the environment changes, performance slides bit by bit — model decay is AI's version of rust.

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🧮AI
A leaner way to read sequences

State Space Model

A different way to process sequences: instead of every position looking at every other, a hidden state compresses and carries information forward — cheap and capable.

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🐍Lu
A selective state space model

Mamba

A sequence model built on the selective state space idea: it keeps what matters, skips the rest, and stays fast and cheap on very long text.

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🧭AI
The dispatcher inside MoE

Router Network

The dispatcher inside MoE: for every request it decides which experts should handle it. Route it right and the model is both powerful and cheap.

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🧠Lu
Trading compute for memory

Gradient Checkpointing

Gradient checkpointing trades a bit of extra compute for a lot less memory — instead of storing every intermediate activation, it recomputes them on demand, cutting GPU memory use sharply.

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⚡AI
FP16 for speed, FP32 where it counts

Mixed Precision Training

Mixed precision training runs most of the math in half-precision FP16 for speed and memory savings, while keeping the precision-critical parts in FP32 — faster, cheaper, and with almost no accuracy loss.

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🌐Lu
Many GPUs, one big model

Distributed Training

Distributed training splits the job across many machines and GPUs running in parallel, turning models that would take months to train into ones that finish in weeks or days.

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🧩AI
Copy the model, split the data

Data Parallelism

Data parallelism is the simplest form of distributed training: every GPU holds a full copy of the model, each chews through a different batch, and the gradients get averaged and synced at the end.

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🧱Lu
When the model won't fit, slice it

Model Parallelism

When a model is too big for one card, model parallelism slices it up and spreads different layers across different GPUs so they compute one model together.

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🪜AI
An assembly line for model layers

Pipeline Parallelism

Pipeline parallelism slices a model by layer across devices and lets many batches flow through like an assembly line, cutting idle time and raising overall throughput.

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🗂️Lu
Git, but for your data

Data Versioning

Data versioning manages data the way Git manages code — every dataset change is archived, so you can trace problems and reproduce experiments reliably.

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📦AI
One warehouse for all your features

Feature Store

A feature store is a central warehouse for features — training and serving read the same ones, so you skip duplicate computation and keep offline and online consistent.

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