TY - GEN
T1 - Investigating the quality of different Self-Organizing Map topologies for complex data
AU - Wu, Huajie
AU - Gedeon, Tom
AU - Zhu, Dingyun
PY - 2012
Y1 - 2012
N2 - Self-Organizing Maps (SOM) are useful tools for visualizing high dimensional data. However, conventional SOM suffer from the border effect. Therefore, Spherical Self-Organizing Maps (SSOM) have been developed to remove such negative effects. In this paper, we extend the topology of SSOM by reconstructing the neighbors to propose the concept of Concentric Spherical Self-Organizing Maps (CSSOM). The major improvement of CSSOM is that it allows using an arbitrary number of spheres and such a topology could be applied in analyzing sequential and time series data. We conducted experiments using these SOM topologies on several datasets. The display schemas and several measures for the quality of SOMs are discussed with the experimental results. The comparison of the results indicates that the quality of SOM is improved through using specified CSSOM depending on the characteristics of the dataset.
AB - Self-Organizing Maps (SOM) are useful tools for visualizing high dimensional data. However, conventional SOM suffer from the border effect. Therefore, Spherical Self-Organizing Maps (SSOM) have been developed to remove such negative effects. In this paper, we extend the topology of SSOM by reconstructing the neighbors to propose the concept of Concentric Spherical Self-Organizing Maps (CSSOM). The major improvement of CSSOM is that it allows using an arbitrary number of spheres and such a topology could be applied in analyzing sequential and time series data. We conducted experiments using these SOM topologies on several datasets. The display schemas and several measures for the quality of SOMs are discussed with the experimental results. The comparison of the results indicates that the quality of SOM is improved through using specified CSSOM depending on the characteristics of the dataset.
UR - https://www.scopus.com/pages/publications/84868231766
U2 - 10.1109/LINDI.2012.6319492
DO - 10.1109/LINDI.2012.6319492
M3 - Conference Paper
SN - 9781467345194
T3 - LINDI 2012 - 4th IEEE International Symposium on Logistics and Industrial Informatics, Proceedings
SP - 221
EP - 226
BT - LINDI 2012 - 4th IEEE International Symposium on Logistics and Industrial Informatics, Proceedings
T2 - 4th IEEE International Symposium on Logistics and Industrial Informatics, LINDI 2012
Y2 - 5 September 2012 through 7 September 2012
ER -