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Conference Papers Year : 2012

Self-Organizing Maps for Mixed Feature-Type Symbolic Data

Hani Hamdan


The self-organizing map is a kind of artificial neural network used to map high dimensional data into a low dimensional space. This paper presents a self-organizing map to do unsupervised clustering for mixed feature-type symbolic data while preserving the topology of the data. A preprocessing technique prior to clustering is needed in order to homogenize the data. Every mixed feature-type vector is transformed into a vector of histograms. The resulting data set is used to train the self-organizing map using the batch algorithm. Similar input vectors will be allocated to the same neuron or to a neighbor neuron on the map. The performance of this approach is then illustrated and discussed while applied to real interval and mixed feature-type symbolic data sets.
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hal-00776147 , version 1 (15-01-2013)



Chantal Hajjar, Hani Hamdan. Self-Organizing Maps for Mixed Feature-Type Symbolic Data. 2012 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT 2012), Dec 2012, Ho Chi Minh City, Vietnam. ⟨10.1109/ISSPIT.2012.6621275⟩. ⟨hal-00776147⟩
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