Series

Graph & RAG

Engineering troubleshooting logs on building Personal RAG, Knowledge Graphs, and GNNs.

The Euclidean Sinkhole: Why Local Dense Vector RAG Fails at Personal Knowledge Sensemaking
An empirical breakdown of context fragmentation, multi-hop blindness, and global synthesis bottlenecks in flat FAISS/L2 spaces—and why personal vaults demand graph topologies.
Jul 6, 20268 min read6
Spectral Graph Embeddings & Bipartite Bridging: Controlling Data Sparsity Without LLM Semantic Drift
Why linear-algebraic matrix factorization is identical to graph representation learning, and how to bridge Out-of-Vocabulary (OOV) terms in specialized domains without destroying personal subjectivity.
Jul 6, 20266 min read10