# infinilabs/analysis-ik

🚌 The IK Analysis plugin integrates Lucene IK analyzer into Elasticsearch and OpenSearch, support customized dictionary.

Repository: https://github.com/infinilabs/analysis-ik
Canonical: https://ross.abutalabs.com/products/analysis-ik
Language: Java
License: Apache-2.0
License Family: permissive
Topics: elasticsearch, ik-analysis, analyzer, java, easysearch, opensearch
Last push: 2026-06-30T08:29:48+00:00

## Health v2 (maintenance only)
Score: 63/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 90, release rhythm 8, longevity 100
- inputs: {"age_days": 5374, "days_push": 64, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 17515, forks 3276 (observed 2026-08-28T04:11:19.943397+00:00)

## What it is
The IK Analysis plugin integrates the Lucene IK analyzer into Elasticsearch and OpenSearch, providing Chinese text tokenization via the ik_smart and ik_max_word analyzers. It supports customized dictionaries and is actively maintained by INFINI Labs across major engine versions.

## Use cases
- index and search Chinese text in Elasticsearch
- segment Chinese sentences into words for full-text search
- add a custom dictionary to Elasticsearch analysis
- install a Chinese analyzer plugin on OpenSearch
- improve Chinese search relevance with ik_max_word and ik_smart

## When to choose
- you need Chinese-language tokenization in Elasticsearch or OpenSearch
- you want fine-grained word segmentation with custom dictionaries
- you need an actively maintained analyzer plugin across engine versions

## When to avoid
- your content is primarily English or other space-delimited languages
- you use a search engine other than Elasticsearch or OpenSearch
- you need analyzers for languages other than Chinese

## Facets
- artifact type: plugin
- maturity: active
- function: search-engine, nlp, parser
- domain: databases, developer-tools
- platform: jvm, self-hosted
- tags: elasticsearch-plugin, opensearch-plugin, chinese-text-analysis, ik-analyzer, custom-dictionary, tokenization, search, natural-language-processing

## Member repositories
- infinilabs/analysis-ik (main) score 63

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:19.943397+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:02:54.881896+00:00, confidence not recorded.
  - readme: https://github.com/infinilabs/analysis-ik (fetched 2026-08-28T04:11:19.943397+00:00, sha ea50eb7736a1)
- Data as of 2026-08-30T08:39:29.467469+00:00.