Search Engine
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Search Engine
Jul. 27, 2016•0 likes•278 views
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Presentations & Public Speaking
- Search Engine Concept - ElasticSearch introduction
Gong HaibingFollow
Search Engine
- @dylanninin 2016-04-14
- • Ctrl + F • String Search • Regular Expression • SQL • NoSQL • Search Engine • Site Search
- ElasticSearch
- • • Lucene • • • • • • RESTful API •
- ElasticSearch MongoDB MySQL Index Database Database Type Collection Table Doc Document Row Field Field Column Mapping Schema Schema Everything Indexed Index Index DSL Query Query SQL
- http://openplay-staging:19200/_plugin/hq/
- OPID, /
- Doc
- mapping instance
- 2. _id Document ObjectId 1. JSON Document 3. RESTful API
- OpenPlay query syntax URL
- ElasticSearch Query DSL
- 1. 2.
- ElasticSearch
- OpenPlay example 1. Mongo-Connector 2. Create/Update/Delete 3. Mongo-Connector
- OpenPlay example 1. • • • •
- OpenPlay example 1. 2. • •
- jieba
- 1.
- 1. ik
- 1. 2. “ / ”, “ ” O(n)
- Search: brown quick
- inverted index
- brown quick inverted index
- inverted index inverted index Quick, quick dog, dogs jumped, leap
- 1. aggs 2.
- 1. highlight 2.
- 1. Mapping suggest
- 1. Mapping suggest 2.
- 1. Mapping suggest 3.
- 1. (precision) 2. (recall)
- 1. 2.
- QA
- • Wiki: Search Engine • https://www.elastic.co/guide/index.html • ElasticSearch • ElasticSearch • Lucene • Mongo-Connector • Jieba • • Inverted Index • Wiki: Precision Recall • Information Retrieval and Web Search