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Sequence-based SOM: Visualizing transition of dynamic clusters

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4 Author(s)
Ken-ichi Fukui ; Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Japan ; Kazumi Saito ; Masahiro Kimura ; Masayuki Numao

We have proposed neural-network based visualization approach, called sequence-based SOM (self-organizing map) that visualizes transition of dynamic clusters by introducing the sequencing weight function onto the neuron topology. This approach mitigates the problems with a sliding window-based method. In this paper, we confirmed the properties of the proposed method via artificial data sets, and a real news articles data set by showing the topicspsila derivation and diversification/convergence. Visualization of cluster transition aids in the comprehension of such phenomena which come useful in various domains such as fault diagnosis and medical check-up, among others.

Published in:

Computer and Information Technology, 2008. CIT 2008. 8th IEEE International Conference on

Date of Conference:

8-11 July 2008