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AC- ViSOM : Hybridising the Modified Adaptive Coordinate (AC) and ViSOM for Data Visualization

AC- ViSOM : Hybridising the Modified Adaptive Coordinate (AC) and ViSOM for Data Visualization. Md. Sarwar Zahan Tapan , Teh Chee Siong ITSim , 2009 Presented by Hung-Yi Tsai 2011/8/24. Outlines. Motivation Objectives Methodology Experiments Conclusions Comments. Motivation.

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AC- ViSOM : Hybridising the Modified Adaptive Coordinate (AC) and ViSOM for Data Visualization

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  1. AC-ViSOM: Hybridising the Modified Adaptive Coordinate (AC) and ViSOMfor Data Visualization Md. SarwarZahanTapan, TehCheeSiong ITSim, 2009 Presented by Hung-Yi Tsai 2011/8/24

  2. Outlines • Motivation • Objectives • Methodology • Experiments • Conclusions • Comments

  3. Motivation • ViSOM requires a large amount of neurons in the network to effectively represent the data. • But ViSOM suffer from dead neuronproblem.

  4. Objectives To propose a modified Adaptive Coordinate (AC) approach is hybridised with ViSOM to address the above-mentioned issues. The basic idea of AC approach is to mirror the movements and locations in the SOM projecting activity.

  5. Methodology SOM

  6. Methodology Visualization induced SOM(ViSOM)

  7. Methodology Adaptive Coordinates(AC)

  8. Methodology AC-ViSOM

  9. Experiments 2D Gaussian data set…

  10. Experiments 2D Gaussian data set…

  11. Experiments 3D synthetic data set…

  12. Experiments 3D synthetic data set…

  13. Experiments Wisconsin Breast Cancer (WBC)..

  14. Conclusions • AC-ViSOM is able to minimize the number of dead neurons in the map as well as optimize the data representation.

  15. Comments • Advantages • None. • Drawbacks • Some wrong. • Applications • Data Visualization in ANN

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