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Embeddings

Dec 7, 2025 Recommendation Systems 2 min read

Recommendation Systems (3): Deep Learning Foundations

From MLPs to embeddings to NeuMF, YouTube DNN, and Wide & Deep -- a progressive walkthrough of the deep learning building blocks that power every modern recommender, with verified architectures and runnable PyTorch code.

Nov 15, 2025 NLP 16 min read

NLP (10): RAG and Knowledge Enhancement Systems

Build production-grade RAG systems from first principles: the retrieve-then-generate decomposition, vector indexes (FAISS / Milvus / Chroma / Weaviate / Pinecone), dense+sparse hybrid retrieval with RRF, cross-encoder …