LeetcodeGraphs
How Does Google Maps Skip 90% of Roads?
See how graph algorithms let Google Maps skip 96% of roads. Benchmark with 40K intersections, full Python code, and interactive simulator.
14 min read
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AILLM
Fine-Tuning vs RAG: Bake It or Fetch It
Learn when to fine-tune an LLM vs use RAG for knowledge. Interactive decision tool helps you pick the right approach for your use case.
9 min read
AILLM
Mixture of Experts: Sparse, Scalable LLMs
Learn how Mixture of Experts lets LLMs use trillions of parameters while activating only a fraction per token. Route tokens through experts interactively.
9 min read
AILLM
Reward Hacking: When LLMs Game the System
Learn how LLMs exploit reward models during RLHF training. Interactive playground lets you watch a model discover and exploit reward shortcuts.
9 min read
AILLM
Direct Preference Optimization: RLHF Without Pain
Learn how DPO aligns LLMs with one loss function and no RL loop. Interactive playground lets you tune beta and watch preferred outputs rise in probability.
9 min read
AILLM
Reinforcement Learning from Human Feedback: Training LLMs
Learn how RLHF turns raw language models into helpful assistants. Interactive playground lets you rank outputs and watch a reward model update live.
9 min read
AILLM
Beam Search vs Sampling: How LLMs Decode
Compare greedy, beam search, top-p sampling, and contrastive search for LLM decoding. Interactive playground shows each strategy picking tokens live.
9 min read
AILLM
GGUF vs GPTQ vs AWQ: Pick the Right Format
GGUF, GPTQ, and AWQ are three ways to shrink LLM weights. Each format makes different tradeoffs between hardware flexibility, accuracy, and speed.
9 min read
AILLM
Temperature & Top-p: How LLMs Choose Words
Learn how temperature and top-p control LLM output. Interactive playground lets you tune both and watch the probability distribution change.
9 min read
AILLM
How Transformers Work Step by Step
Understand how transformers process text from token to prediction. An interactive guide with a live playground to trace the full forward pass.
10 min read
AI
What Are Embeddings and Why Do They Matter
What are embeddings? See how AI turns text into numbers. Interactive visualizer compares phrases and reveals why similar meanings become nearby vectors.
7 min read
AI
Why You Need a Vector Database, Not a List
Why can't you just use a Python list for vector search? Interactive simulator shows how brute force dies at 100K vectors and why you need a vector DB.
7 min read