Awesome Infra for AI › Vector Databases & Retrieval Infrastructure

datastax/jvector

⭐ 1752 Java repository created 2023-08-25

JVector is a high-performance, embedded vector search engine primarily written in Java, designed for efficient Approximate Nearest Neighbor (ANN) search in large-scale, high-dimensional datasets. It combines a hierarchical structure inspired by HNSW with the Vamana algorithm (behind DiskANN) within each layer, allowing for incremental construction and updates. The engine features a multi-layer graph with nonblocking concurrency control, enabling linear scaling with the number of CPU cores. It utilizes a two-pass search mechanism to reduce memory usage and latency while maintaining accuracy. The first pass uses lossily compressed vector representations (Product Quantization, Binary Quantization, Fused PQ) in memory, while the second pass uses more accurate representations (full float32 or NVQ) read from disk. This design allows for building larger-than-memory indexes, preventing the need to merge results from multiple smaller indexes and ensuring logarithmic search times. JVector is built as a multimodule Maven project and is compatible with Java 11+, with optimized vector providers for Java 20+ JVMs. It includes comprehensive documentation, tutorials, and benchmarking tools for evaluation and development. As an embedded library, it's suitable for integrating vector search capabilities directly into Java applications without external dependencies or services.

https://github.com/datastax/jvector

annjavaknnmachine-learningsearch-enginesimilarity-searchvector-searchvector-databaseembedded

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