Research and Development of Transport Knowledge Search Engine Based on ElasticSearch

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According to the types and characteristics of science and technology information in the field of transportation, combined with the needs of the transportation knowledge service system for its retrieval, a transport knowledge search engine is developed. The engine is based on ElasticSearch, combined with the thesaurus in the field of transportation, plugged in the IKAnalyzer, and improved the search relevance sorting algorithm based on Okapi BM25. The engine provides three functions of data import, data indexing and data retrieval, and supports the transportation knowledge service system to realize one-stop retrieval of all kinds of integrated information. After testing, the search accuracy and performance of the engine can meet the requirements of use.