SemanticScuttle - klotz.me

Tags: vector search* + machine learning*

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1. Witchcraft

   A from-scratch reimplementation of Stanford's XTR-Warp semantic search engine written in safe Rust. It is designed for client-side deployment, utilizing a single-file SQLite database for storage without the need for external API keys, vector databases, or complex chunking strategies. The engine offers high performance with extremely low end-to-end search latency and supports hybrid search by combining semantic results with standard BM25 functionality.
   Key features and components:
   - High-speed semantic search capable of running on local devices.
   - SQLite backend for easy data persistence and portability.
   - Support for various backends including T5 quantized weights via candle and OpenVINO.
   - Pickbrain CLI example for indexing AI coding session transcripts (Claude Code/OpenAI Codex).
   - Hardware acceleration support for Apple Silicon (Metal) and x86 (fbgemm).
   - Available as a Node.js native module.

   2026-04-20 Tags: rust, semantic search, xtr-warp, sqlite, machine learning, vector search, local ai, dropbox by klotz
2. Enhancing GPU-Accelerated Vector Search in Faiss with NVIDIA cuVS

   This post explores how to solve challenges in vector search using NVIDIA cuVS with the Meta Faiss library. It covers the benefits of integration, performance improvements, benchmarks, and code examples.

   2025-11-07 Tags: vector search, faiss, nvidia cuvs, gpu acceleration, ivf, cagra, rag, large language models, machine learning by klotz
3. Retrieval Augmented Generation in SQLite

   The article explores the concept of Retrieval-Augmented Generation (RAG) using SQLite, specifically with the sqlite-vec extension and the OpenAI API. It outlines a simplified approach to RAG, moving away from complex frameworks and cloud vector databases, using SQLite's virtual tables for vector search and semantic understanding.

   2025-02-20 Tags: rag, llm sqlite, sqlite-vec, vector search, machine learning, data science by klotz
4. Introducing sqlite-vec v0.1.0: a vector search SQLite extension that runs everywhere

   Introducing sqlite-vec, a new SQLite extension for vector search written entirely in C. It's a stable release and can be installed in multiple ways. It runs on various platforms, is fast, and supports quantization techniques for efficient storage and search.

   2024-08-04 Tags: sqlite-vec, sqlite, vector search, embeddings, quantization, database, ann, knn, machine learning by klotz

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