Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS
description
Transcript of Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS
![Page 1: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/1.jpg)
Intelligent Database Systems Lab
Presenter : YU-TING LU
Authors : Ezequiel López-Rubio
2013. TNNLS
Improving the Quality of Self-Organizing Maps by Self-Intersection Avoidance
![Page 2: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/2.jpg)
Intelligent Database Systems Lab
OutlinesMotivationObjectivesMethodologyExperimentsConclusionsComments
![Page 3: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/3.jpg)
Intelligent Database Systems Lab
Motivation
• The quality of self-organizing maps is always a
key issue to practitioners.
• This is advantageous as a good quality map
provides a better insight to the structure of the
input data set.
![Page 4: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/4.jpg)
Intelligent Database Systems Lab
Objectives
• Improve the already existing self-organizing models by
decreasing the topology errors of the generated maps.
• Modify the learning algorithm of self-organizing maps
to reduce the number of topology errors.
![Page 5: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/5.jpg)
Intelligent Database Systems Lab
Methodology-basic concepts• Review of Two Self-Organizing Map Models
![Page 6: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/6.jpg)
Intelligent Database Systems Lab
Methodology-basic concepts• Types of Topology Errors
![Page 7: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/7.jpg)
Intelligent Database Systems Lab
Methodology-basic concepts• Self-Intersections
i
j k
r t
s
![Page 8: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/8.jpg)
Intelligent Database Systems Lab
Methodology – self-intersection avoidance
![Page 9: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/9.jpg)
Intelligent Database Systems Lab
Experiments
![Page 10: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/10.jpg)
Intelligent Database Systems Lab
Experiments
![Page 11: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/11.jpg)
Intelligent Database Systems Lab
Experiments
![Page 12: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/12.jpg)
Intelligent Database Systems Lab
Experiments
![Page 13: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/13.jpg)
Intelligent Database Systems Lab
Experiments
![Page 14: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/14.jpg)
Intelligent Database Systems Lab
Experiments
![Page 15: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/15.jpg)
Intelligent Database Systems Lab
Experiments
![Page 16: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/16.jpg)
Intelligent Database Systems Lab
Experiments
![Page 17: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/17.jpg)
Intelligent Database Systems Lab
Experiments
![Page 18: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/18.jpg)
Intelligent Database Systems Lab
Experiments
![Page 19: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/19.jpg)
Intelligent Database Systems Lab
Conclusions
• The maps trained with this approach exhibited less topology errors at the expense of a larger quantization error.
• The procedure can be easily extended to many self-organizing neural networks, and it does not change the structure of the original model.
![Page 20: Presenter : Yu-Ting LU Authors : Ezequiel López -Rubio 2013. TNNLS](https://reader036.fdocuments.us/reader036/viewer/2022062520/5681637d550346895dd45c3d/html5/thumbnails/20.jpg)
Intelligent Database Systems Lab
Comments• Advantages
-Improving the Quality of Self-Organizing Maps
• Applications- SOM