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On the Signature Tree Construction and Analysis

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2 Author(s)
Chen, Y. ; Dept. of Appl. Comput. Sci., Winnipeg Univ., Man. ; Chen, Y.

Advanced database application areas, such as computer aided design, office automation, digital libraries, data-mining, as well as hypertext and multimedia systems, need to handle complex data structures with set-valued attributes, which can be represented as bit strings, called signatures. A set of signatures can be stored in a file, called a signature file. In this paper, we propose a new method to organize a signature file into a tree structure, called a signature tree, to speed up the signature file scanning and query evaluation. In addition, the average time complexity of searching a signature tree is analyzed and how to maintain a signature tree on disk is discussed. We also conducted experiments, which show that the approach of signature trees provides a promising index structure

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Knowledge and Data Engineering, IEEE Transactions on  (Volume:18 ,  Issue: 9 )