DOCUMENT RETRIEVAL USING INTERNAL DICTIONARY-HIERARCHIES TO ADJUST PER-SUBJECT MATCH RESULTS

摘要

Techniques for managing big data include retrieval using per-subject dictionaries having and hierarchical information indicating affinity between the dictionaries. A retrieval request for one or more documents pertaining to one or more subjects is performed by specifying the subjects, selecting dictionaries associated with the subjects, matching the subjects to documents in the collection according to a strength of relationship between the documents and the subjects and also using the hierarchical information, to obtain a subset of the collection of documents.