![]() ![]() The idea of metadata is often expanded to encompass words or phrases that stand for objects or “entities” in the world, leading to the notion of entity extraction. ![]() Metadata is a kind of highly structured (and therefore actionable) document summary. ![]() Metadata was mentioned above as data about data: in the realm of text the term generally refers to salient features of a work, such as its author, title, subject classification, subject headings, and keywords. Pal, in Data Mining (Fourth Edition), 2017 Information ExtractionĪnother general class of text mining problems is metadata extraction. ![]()
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