Information Retrieval (IR)

Information retrieval (IR) in computing and information science is the process of obtaining information system resources that are relevant to an information need from a collection of those resources. Searches can be based on full-text or other content-based indexing. Information retrieval is the science[1] of searching for information in a document, searching for documents themselves, and also searching for the metadata that describes data, and for databases of texts, images or sounds.Covers indexing, dictionaries, retrieval, content and analysis. Roughly includes material in ACM Subject Classes H.3.0, H.3.1, H.3.2, H.3.3, and H.3.4.

相关学科： Collaborative FilteringImage RetrievalDigital LibrariesNLPRecommendation SystemsContent-Based Image RetrievalDatabasesSentiment AnalysisSocial and Information NetworksQuestion Answering

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