Domain knowledge assimilation by learning complex concepts

  • Authors:
  • Tuan Trung Nguyen

  • Affiliations:
  • Polish-Japanese Institute of Information Technology, Warsaw, Poland

  • Venue:
  • RSCTC'06 Proceedings of the 5th international conference on Rough Sets and Current Trends in Computing
  • Year:
  • 2006

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Abstract

Domain, or background, knowledge has proven to be a key component in the development of high-performance classification systems, especially when the objects of interest exhibit complex internal structures, as in the case of images, time series data or action plans. This knowledge usually comes in extrinsic forms such as human expert advices, often contain complex concepts expressed in quasi-natural descriptive languages and need to be assimilated by the classification system. This paper presents a framework for the assimilation of such knowledge, equivalent to matching different ontologies of complex concepts, using rough mereology theory and rough set methods. We show how this framework allows a learning system to acquire complex, highly structured concepts from an external expert in an intuitive and fully interactive manner. We also argue the need to focus on expert’s knowledge elicited from outlier or novel samples, which we deem have a crucial impact on the classification process. Experiments on a large collection of handwritten digits are discussed.