This is an overview presentation about my PhD research, not a very technical one. This was presented in the open session of WebST'16 Summer School in Web Science, July 2016, Bilbao - Spain.
11. Why is it difficult? Example
• “Obama is a supporter of the Chicago White Sox”
• Straightforward, singleton information
• Pure syntactic extraction possible
• Barack_Obama supporterOf Chicago_White_Sox
• “He is also primarily a Chicago Bears football fan in the NFL, but in his
childhood and adolescence was a fan of the Pittsburgh Steelers”
• Complex, multiple information
• Semantic understanding necessary
• … how do we represent this?
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12. Example: representing complex fact
• “He is also primarily a Chicago Bears football fan in the NFL, but in his
childhood and adolescence was a fan of the Pittsburgh Steelers”
• Barack_Obama footballFan Chicago_Bears in NFL
• supporterOf vs footballFan
• Is it necessary to include NFL in the whole relations?
• What about the adjective primarily? What information does it imply?
• Barack_Obama fanOf Pittsburgh_Steelers
• fanOf vs supporterOf
• Missing the time information referred in “in his childhood and adolescence
was”
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15. Ongoing work
• Automated rule mining
• Semantic refinement for knowledge representation
• Ontology building
• Naming and taxonomy of entities, classes, and relations
• Handling complex fact
• Obama appoints x as y in z
• Handling modality, adjectives, and sentiment
• “In the past”, “it is rumoured that”, “it is not true that”
• Future evaluation
• Bigger ground truth (amount + topic coverage)
• Evaluate how well we enrich existing KBs
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