Keyphrase extraction

Keyphrase extraction is a type of document analysis that determines the relevant elements of a text:

• Relevant topics
• Main sentences
• Main phrases
• Main concepts
• Main lemmas

Main concepts are returned as Knowledge Graph "syncons" and enriched through knowledge linking: open data—Wikidata, DBpedia and GeoNames references—are returned. In the case of actual places, geographic coordinates are also provided.

Relevant topics are chosen from the Knowledge Graph. You can find a list of relevant topics in the reference section.

The API resource carrying out keyphrase extraction has the following endpoint:

/api/analyze

In the reference section of this manual you will find all the information you need to perform keyphrase extraction, specifically:

• The format of the request.
• The format of the output.

Here is an example of performing keyphrase extraction on an English newspaper article: