[1]ZHANG Ji-fu,ZHANG Su-lan,HU Li-hua.Constrained concept lattice and its construction method[J].CAAI Transactions on Intelligent Systems,2006,1(2):31-38.
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CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
1
Number of periods:
2006 2
Page number:
31-38
Column:
学术论文—人工智能基础
Public date:
2006-10-25
- Title:
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Constrained concept lattice and its construction method
- Author(s):
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ZHANG Ji-fu1; 2; ZHANG Su-lan1; HU Li-hua1
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1.School of Computer Science and Technology, Taiyuan University of S cience and Technology, Taiyuan 030024, China; 2.National Laboratory of Pattern Re cognition, Institute of Automation, Chinese Academy of Sciences, Beijing 100080 , China
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- Keywords:
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data mining; constrained concept lattice; predicate logic; background knowledge; star spectra data
- CLC:
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TP311
- DOI:
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- Abstract:
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Concept lattice is an effective formal tool for data analysis and knowledge min ing. However, with the increase of data volume, the node number of the construct ed concept lattice from the original formal context usually increases enormously , and large storage is required accordingly. Meantime, users are not interested in all intensions of attributes set, and more computational time is unnecessaril y consumed as a result. In order to reduce time and storage complexity and impro ve the utility and pertinence to the concept lattice construction,predicate log ic is used to describe the user interested background knowledge, and a new conce pt lattice structureconstrained concept lattice is presented. Then based on the background knowledge, a construction algorithm (CCLA) is also provided. Thr ough some theoretical analysis, it is shown that the proposed algorithm can redu ce the storage and time complexity of con cept lattice construction process. Finally, the experiments with celestial body spectra as the formal context validate the proposed algorithm.