Cathy Legg

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Cathy Legg is an author.

Publications

Only those publications related to wikis are shown here.
Title Keyword(s) Published in Language DateThis property is a special property in this wiki. Abstract R C
Bill gates is not a parking meter: Philosophical quality control in automated ontology-building AISB/IACAP World Congress 2012: Computational Philosophy, Part of Alan Turing Year 2012 English 2012 The somewhat old-fashioned concept of philosophical categories is revived and put to work in automated ontology building. We describe a project harvesting knowledge from Wikipedia's category network in which the principled ontological structure of Cyc was leveraged to furnish an extra layer of accuracy-checking over and above more usual corrections which draw on automated measures of semantic relatedness. 0 0
"All you can eat" ontology-building: Feeding wikipedia to Cyc Proceedings - 2009 IEEE/WIC/ACM International Conference on Web Intelligence, WI 2009 English 2009 In order to achieve genuine web intelligence, building some kind of large general machine-readable conceptual scheme (i.e. ontology) seems inescapable. Yet the past 20 years have shown that manual ontology-building is not practicable. The recent explosion of free user-supplied knowledge on the Web has led to great strides in automatic ontology-building, but quality-control is still a major issue. Ideally one should automatically build onto an already intelligent base. We suggest that the long-running Cyc project is able to assist here. We describe methods used to add 35K new concepts mined from Wikipedia to collections in ResearchCyc entirely automatically. Evaluation with 22 human subjects shows high precision both for the new concepts' categorization, and their assignment as individuals or collections. Most importantly we show how Cyc itself can be leveraged for ontological quality control by 'feeding' it assertions one by one, enabling it to reject those that contradict its other knowledge. 0 0
Integrating Cyc and Wikipedia: Folksonomy Meets Rigorously Defined Common-Sense English 2008 0 0
Integrating cyc and wikipedia: Folksonomy meets rigorously defined common-sense AAAI Workshop - Technical Report English 2008 Integration of ontologies begins with establishing mappings between their concept entries. We map categories from the largest manually-built ontology, Cyc, onto Wikipedia articles describing corresponding concepts. Our method draws both on Wikipedia's rich but chaotic hyperlink structure and Cyc's carefully defined taxonomic and common-sense knowledge. On 9,333 manual alignments by one person, we achieve an F-measure of 90%; on 100 alignments by six human subjects the average agreement of the method with the subject is close to their agreement with each other. We cover 62.8% of Cyc categories relating to common-sense knowledge and discuss what further information might be added to Cyc given this substantial new alignment. Copyright 0 0