Generating RDF From Natural Language

Are there any tools available for generating RDF from natural language? A list of RDFizers compiled by the SIMILE project only mentions one, the Monrai Cypher. Unfortunately, it seems to have been a proprietary tool developed by Monrai Technologies, which has si开发者_运维技巧nce disappeared, and I can't find any download links. Has anyone seen anything similar?

You want some ontology learning and population tools.

This online article lists 4 different systems:

• Text2Onto,
• Abraxas,
• KnowItAll,
• OntoLearn

You may want to check out the book; it reviews several ontology learning tools as well: Ontology learning from text: methods, evaluation and applications, by Paul Buitelaar, Philipp Cimiano, Bernardo Magnini

You might look into OpenCalias, Zemanta and Hakia which all have nice APIs for extracting semantic data out of internet resources. Not familiar with Monrai Cypher, but possibly these might help.

you could use the python nltk to parse the text and emit the rdf tripplets