Abstract
In this paper, we propose a hierarchical grouping method for non-metric proximity data based on bi-links and ϵ-indiscernibility. It hierarchically forms directional links among objects according their directional proximities. A new cluster can be formed when objects in two clusters are connected with bi-directional links (bi-links). The concept of ϵ-indiscernibility is incorporated into the process of establishing bi-links. This scheme enables users to control the level of asymmetry that can be ignored in merging a pair of objects. Experimental results on the soft drink brand switching data showed that this approach is capable of producing better clusters compared to the straightforward use of bi-links.
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Acknowledgement
This work was supported in part by the grant-in-aid for scientific research (C) #23500179, by the Ministry of Education, Culture, Sports, Science and Technology, Japan.
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Hirano, S., Tsumoto, S. Clustering of non-metric proximity data based on bi-links with ϵ-indiscernibility. J Intell Inf Syst 41, 61–71 (2013). https://doi.org/10.1007/s10844-012-0218-3
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DOI: https://doi.org/10.1007/s10844-012-0218-3