Free reference manager and PDF organizer. Kudos Knowledge - Kudos Knowledge. AlchemyAPI - Transforming Text Into Knowledge. Rapid - I. Document Management System. Kea. Keywords and keyphrases (multi-word units) are widely used in large document collections.
They describe the content of single documents and provide a kind of semantic metadata that is useful for a wide variety of purposes. The task of assigning keyphrases to a document is called keyphrase indexing. For example, academic papers are often accompanied by a set of keyphrases freely chosen by the author. In libraries professional indexers select keyphrases from a controlled vocabulary (also called Subject Headings) according to defined cataloguing rules. Automatic key extraction - OpenKM Documentation. OpenKM uses KEA for extracting keyphrases from text documents.
KEA it by default can be either used for free indexing or for indexing with a controlled vocabulary, but with OpenKM is mandatory having a controled vocabulary. OpenKM automatic extractrion keyphrases is based in KEA 5.0.