Hi All, I have successfully implemented and tested the foaf disambiguation engine with the help of Stanbol community including Rupert, Rafa and Andreas.
The engine's main functionality is to increase the confidence of Entity-Annotations identified from previous engines, by using 2 fundamental techniques; 1. Processing co-referencing URI references in the Entities to detect connected-ness 2. Processing foaf:name comparison with fise:selected-text The main objective of processing co-referencing URIs is to increase the confidence of the most 'connected' entity from the suggested entities. All URI/Reference type fields of the entities are extracted and processed to find co-references with other entities suggested. The most connected entity will have the most number of URI matches, and the disambiguated-confidence will be increased accordingly. The second technique used is literal matching of foaf:name field of the entity with the fise:selected-texts in the content. With an exact match, the disambiguated-confidence will be increased. Finally the cumulative disambiguated-confidence is calculated and adjusted. This engine requires Entity-Annotations extracted from previous engines, and entityhub pre-configured with FOAF entities. I'm using my foaf-site and available dbpedia in the enhancement-chain to detect more entities and increase the effectiveness of the foaf disambiguation engine. The engine's source is hosted at github [1] To execute the engine: 1. Build the maven project at github repository using command : "mvn clean install" 2. Start the Stanbol engine and install the bundle: org.apache.stanbol.enhancer.engines.disambiguation.foaf-1.0-SNAPSHOT.jar 3. Configure the foaf-site-chain with the new disambiguation engine and dbpedialinking (to detect more entities) (Note: To configure foaf-site-chain with pre-built foaf-site please refer my mid-term update mail or follow the guide at [2]) The new engine is identified by : "disambiguation-foaf". After configuring the enhancement-chain successfully the foaf-site-chain should look like below; Engines: langdetect, opennlp-sentence, opennlp-token, opennlp-pos, foaf-site-linking, opennlp-ner, dbpediaLinking, disambiguation-foaf. Please have a look at the disambiguation-foaf engine, try it out and give your comments for improvements. I appreciate your advice very much. I shall also create a Stanbol Jira with all details and attach the source-code and built bundle after finalizing the project. Thanks for all your support given throughout the project. Regards, Dileepa [1] https://github.com/dileepajayakody/foaf-disambiguation [2] https://github.com/dileepajayakody/FOAFSite
