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Elasticsearch is a search engine based on the Lucene library. It provides a distributed, multitenant -capable full-text search engine with an HTTP web interface and schema-free JSON documents. Elasticsearch is developed in Java and is dual-licensed under the ( source-available ) Server Side Public License and the Elastic license, [ 2 ] while ...
azure .microsoft .com /en-us /services /search /. Microsoft Azure Cognitive Search, formerly known as Azure Search, is a component of the Microsoft Azure Cloud Platform providing indexing and querying capabilities for data uploaded to Microsoft servers. The Search as a service framework is intended to provide developers with complex search ...
Website. www .elastic .co. Elastic NV is an American-Dutch company that was founded in 2012 in Amsterdam, the Netherlands, and was previously known as Elasticsearch. [2] It is a search company that builds self-managed and software as a service (SaaS) offerings for search, logging, security, observability, and analytics use cases. [3]
Full-text search. In text retrieval, full-text search refers to techniques for searching a single computer -stored document or a collection in a full-text database. Full-text search is distinguished from searches based on metadata or on parts of the original texts represented in databases (such as titles, abstracts, selected sections, or ...
The main academic full-text databases are open archives or link-resolution services, although others operate under different models such as mirroring or hybrid publishers. . Such services typically provide access to full text and full-text search, but also metadata about items for which no full text is availa
Okapi BM25. In information retrieval, Okapi BM25 ( BM is an abbreviation of best matching) is a ranking function used by search engines to estimate the relevance of documents to a given search query. It is based on the probabilistic retrieval framework developed in the 1970s and 1980s by Stephen E. Robertson, Karen Spärck Jones, and others.
It can be used with many repositories such as Apache Solr, Elasticsearch, Microsoft Azure Cognitive Search, Amazon CloudSearch and more. mnoGoSearch is a crawler, indexer and a search engine written in C and licensed under the GPL (*NIX machines only) Open Search Server is a search engine and web crawler software release under the GPL.
Search engine indexing is the collecting, parsing, and storing of data to facilitate fast and accurate information retrieval. Index design incorporates interdisciplinary concepts from linguistics, cognitive psychology, mathematics, informatics, and computer science. An alternate name for the process, in the context of search engines designed to ...