ngt ☆
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Description:
Neighborhood graph and tree for indexing high-dimensional data
Type: Formula  |  Latest Version: 2.5.0@0  |  Tracked Since: Oct 15, 2025
Links: Homepage  |  formulae.brew.sh
Category: Ai ml
Tags: nearest-neighbor similarity-search machine-learning vector-search ai
Install: brew install ngt
About:
NGT (Neighborhood Graph and Tree) is a library for approximate nearest neighbor search, optimized for high-dimensional vector data. It provides fast and accurate similarity search capabilities, making it ideal for large-scale AI and machine learning applications where finding similar data points quickly is critical.
Key Features:
  • High-speed approximate nearest neighbor search
  • Supports both graph-based (NGT) and tree-based (ONNG) algorithms
  • Optimized for high-dimensional vector data
  • Provides C++ and Python bindings
Use Cases:
  • Image and video similarity search
  • Natural language processing (semantic search)
  • Recommendation systems
  • Anomaly detection in high-dimensional datasets
Alternatives:
  • faiss – Faiss is a widely-used library from Meta, while NGT is developed by Yahoo Japan and may offer different performance characteristics depending on the dataset.
  • hnswlib – HNSWlib is a header-only library focused specifically on the HNSW algorithm, whereas NGT offers a broader set of algorithms including graph and tree-based approaches.
Version History
Detected Version Rev Change Commit
Oct 15, 2025 2:45am 0 VERSION_BUMP c5ac1fe6
Sep 16, 2025 4:53pm 0 VERSION_BUMP 97095835
Dec 17, 2024 1:33pm 0 VERSION_BUMP f3545e9a
Dec 17, 2024 5:14am 0 VERSION_BUMP 5e0e166e
Dec 11, 2024 8:18am 0 VERSION_BUMP 302c09c3
Nov 8, 2024 3:46am 0 VERSION_BUMP e6ee577f
Oct 31, 2024 6:46am 0 VERSION_BUMP 11c833a3
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