File:SOM versus GSOM.png
| Uploaded by | Agor153 |
|---|---|
| Upload date | 2012-05-10T21:40:43Z |
| MIME type | image/png |
| Dimensions | 1248 × 859 px |
| File size | 144.8 KB |
Summary
| Description |
English: Approximation of a spiral with noise by SOM (the upper row) and GSOM (the lower row) with 50 (the first column) and 100 (the second column) nodes. The Fraction of variance unexplained is: a) 4.68% (SOM, 50 nodes); b) 1.69% (SOM, 100 nodes); c) 4.20% (GSOM, 50 nodes); d) 2.32% (GSOM, 100 nodes. The initial approximation for SOM was equidistribution of nodes in a segment on the first principal component with the same variance as for the data set. The initial approximation for GSOM was the mean point. Illustration is prepared using free software: E.M. Mirkes, Principal Component Analysis and Self-Organizing Maps: applet. University of Leicester, 2011. This applet is published under cc Attribution 3.0 unported license. |
| Date | |
| Source | Own work |
| Author | Agor153 |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.