full-text-search: In-memory full text search engine
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An in-memory full text search engine library. It lets you run full-text queries on a collection of your documents.
Features:
Keyword queries and auto-complete/auto-suggest queries.
Can search over any type of "document". (You explain how to extract search terms from them.)
Supports documents with multiple fields (e.g. title, body)
Supports documents with non-term features (e.g. quality score, page rank)
Uses the state of the art BM25F ranking function
Adjustable ranking parameters (including field weights and non-term feature scores)
In-memory but quite compact. It does not keep a copy of your original documents.
Quick incremental index updates, making it possible to keep your text search in-sync with your data.
It is independent of the document type, so you have to write the document-specific parts: extracting search terms and any stop words, case-normalisation or stemming. This is quite easy using libraries such as tokenize and snowball.
The source package includes a demo to illustrate how to use the library. The demo is a simplified version of how the library is used in the hackage-server where it provides the backend for the package search feature.
Properties
| Versions | 0.2.0.0, 0.2.1.0, 0.2.1.0, 0.2.1.1, 0.2.1.3, 0.2.1.4, 0.2.2.0, 0.2.2.1, 0.2.2.2 |
|---|---|
| Change log | changelog |
| Dependencies | array (>=0.4 && <0.5), base (>=4.5 && <4.7), bytestring, Cabal (>=1.14 && <1.20), containers (>=0.4 && <0.6), directory, filepath, full-text-search, mtl, snowball (>=1.0 && <1.1), split (>=0.2 && <0.3), tar, text (>=0.11 && <1.2), time, tokenize (>=0.1 && <0.2), transformers, vector (>=0.10 && <0.11) [details] |
| License | BSD-3-Clause |
| Copyright | 2013-2014 Duncan Coutts, 2014 Well-Typed LLP, 2014 IRIS Connect Ltd. |
| Author | Duncan Coutts |
| Maintainer | Duncan Coutts <duncan@well-typed.com> |
| Category | Data, Text, Search |
| Source repo | head: darcs get http://code.haskell.org/full-text-search/ |
| Uploaded | by DuncanCoutts at 2014-03-11T13:41:17Z |
Modules
- Data
- Data.SearchEngine
- Data.SearchEngine.BM25F
- Data.SearchEngine
Flags
Automatic Flags
| Name | Description | Default |
|---|---|---|
| build-search-demo | Build a little program illustrating the use of the library | Disabled |
Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info
Downloads
- full-text-search-0.2.1.0.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)
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