| 21. | Logic programming languages that include this extension have the knowledge representation capabilities of a non-monotonic logic.
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| 22. | He was appointed full professor in 2002, and is leading the Knowledge Representation and Reasoning Group.
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| 23. | A knowledge representation language may be sufficiently expressive to describe nuances of meaning in well understood fields.
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| 24. | Kurzweil surveys the vision, and knowledge representation, as seen in language, are two key components of intelligence.
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| 25. | A key trade-off in the design of a knowledge representation formalism is that between expressivity and practicality.
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| 26. | Metaclasses thus enhance the expressivity of knowledge representations in a way that can be intuitive for users.
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| 27. | Although these representations are mathematically neat, they tend to be unsuitable for knowledge representation in expert systems.
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| 28. | For example, the Web Ontology Language ( OWL ) employs several layers of logic-based knowledge representation systems.
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| 29. | For his doctoral thesis, he focused on musical knowledge representation, machine learning of music and software sound synthesis.
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| 30. | However, FOL has two drawbacks as a knowledge representation formalism : ease of use and practicality of implementation.
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