SanJuan, Eric and Ibekwe-SanJuan, Fidelia Text mining without document context. Information Processing & Management, 2006, vol. 42, n. 6, pp. 1532-1552. [Journal article (Paginated)]
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English abstract
We consider a challenging clustering task: the clustering of muti-word terms without document co-occurrence information in order to form coherent groups of topics. For this task, we developed a methodology taking as input multi-word terms and lexico-syntactic relations between them. Our clustering algorithm, named CPCL is implemented in the TermWatch system. We compared CPCL to other existing clustering algorithms, namely hierarchical and partitioning (k-means, k-medoids). This out-of-context clustering task led us to adapt multi-word term representation for statistical methods and also to refine an existing cluster evaluation metric, the editing distance in order to evaluate the methods. Evaluation was carried out on a list of multi-word terms from the genomic field which comes with a hand built taxonomy. Results showed that while k-means and k-medoids obtained good scores on the editing distance, they were very sensitive to term length. CPCL on the other hand obtained a better cluster homogeneity score and was less sensitive to term length. Also, CPCL showed good adaptability for handling very large and sparse matrices.
Item type: | Journal article (Paginated) |
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Keywords: | Multi-word term clustering, lexico-syntactic relations, text mining, informetrics, cluster evaluation |
Subjects: | I. Information treatment for information services > IB. Content analysis (A and I, class.) I. Information treatment for information services > ID. Knowledge representation. |
Depositing user: | Fidelia Ibekwe-SanJuan |
Date deposited: | 26 Feb 2008 |
Last modified: | 02 Oct 2014 12:10 |
URI: | http://hdl.handle.net/10760/11148 |
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