# 使用 Homebrew, Nix 安装 ngt 查看 ngt 的安装路径、可执行文件、元数据以及面向 AI 代理工作流的安全说明。 ## 安装 ```sh sudo av install brew:ngt ``` 其他安装命令: ### macOS - Homebrew (100%): ```sh brew install ngt ``` 证据: local Homebrew formula metadata ### Linux - Nix (92%): ```sh nix profile install nixpkgs#ngt ``` 证据: nixpkgs package indexes: pkgs/by-name/ng/ngt/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 ## 软件包事实 - **软件包键:** brew:ngt - **软件包管理器:** Homebrew - **版本:** 2.7.4 - **来源摘要:** Neighborhood graph and tree for indexing high-dimensional data - **主页:** - **仓库:** - **最后更新:** 2026-05-08T19:35:29Z - **已生成:** 2026-08-03T19:37:03+00:00 ## 可执行文件 - ngt (别名) - qbg (别名) ## 安装行为 - Bottle: 不可用 ## 版本和新鲜度 - 页面生成时间: 2026-08-03 - 管理器版本: 2.7.4 ## 项目历史与用法 NGT, Neighborhood Graph and Tree, is Yahoo Japan/LY Corporation's approximate nearest neighbor search library for large, high-dimensional vector data. It provides command-line tools and C, C++, and Python interfaces for building vector indices and searching them quickly. ### 项目历史 Masajiro Iwasaki wrote in April 2023 that Yahoo! JAPAN Research released NGT as open-source software in September 2016. The GitHub README credits Yahoo Japan Corporation from 2015 and anchors the project in graph/tree approximate nearest-neighbor methods, later adding ONNG, NGTQ, QG, and QBG variants. The release notes embedded in the README show a progression from ONNG availability in August 2018, quantized NGT in December 2018, PyPI packaging in January and June 2019, QG in January 2021, FP16 in February 2022, and QBG/QG command consolidation in August 2022. Homebrew packaged stable version 2.7.4 on July 1, 2026. ### 采用历史 NGT's adoption is specialized but real in the vector-search world. The 2019 Opensource.com article says Yahoo! Japan used it for similarity-based fashion-item search, and the 2023 maintainer article says it was adopted by a number of Yahoo! JAPAN services through Vald. It is also cited in ANN benchmark and similarity-search literature. Homebrew analytics on July 1, 2026 reported 268 install-on-request events over 365 days, which fits the package's role: useful for ML/search engineers and benchmarking people, not a mainstream developer utility. ### 使用方式 The package-nerd path is to install `ngt`, generate or export vectors, create an index with a command such as `ngt create -d 300 -D c index objects.ssv`, and search with `ngt search -n 10 index query.ssv`. Python users can install the binding from PyPI under the `ngt` package and use `ngtpy`. QG and QBG matter when datasets get large enough that memory traffic dominates. The README describes NGT as graph/tree based, QG as quantized graph based, and QBG as quantized blob graph based; QBG is specifically documented for billion-object scale. ### 时间线 - {'date': '2016-09', 'event': "Yahoo! JAPAN Research released NGT as open-source software, according to Masajiro Iwasaki's 2023 article."} - {'date': '2018-08-08', 'event': 'ONNG became available in NGT v1.4.0.'} - {'date': '2019-01-17', 'event': 'Python NGT became installable through PyPI in v1.5.1.'} - {'date': '2021-01-15', 'event': 'NGT v1.13.0 added Quantized Graph support.'} - {'date': '2022-08-10', 'event': 'QBG and renewed QG became available in v2.0.0.'} ### Related projects - Vald - ANN-Benchmarks - Faiss - hnswlib - Annoy - ScaNN ### 来源 - - - - - ## 安全说明 没有找到 ngt 的匹配本地密钥处理 manifest。Nucleus 软件包元数据仍在此发布，以便未来覆盖拥有稳定的软件包 URL。 ## 其他软件包管理器记录 - Nix - ngt: normalized package name match | nixpkgs package indexes: pkgs/by-name/ng/ngt/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 ## Combined YAML source View the package source record on GitHub. [combined/ngt.yml](https://github.com/mxcl/pkgdb/blob/main/combined/ngt.yml) ## 来源 - pkg.so package database - Geiger risk classifier - curated package history - pkgdb category and tag curation - external package-manager database matches - cross-ecosystem install command graph