| Paper Abstract and Keywords |
| Presentation |
2009-03-19 10:40
Statistical analysis of information expression in V1 receipt field with sparseness constraint
Yoshitaka Hirose, Ko Sakai (Univ. of Tsukuba) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
We discuss the information representation in V1 neurons including their surround modulation, with specific interests on sparseness in their coding. We compared statistical indices, kurtosis and KL divergence, between the surround-modulation model and a classical receipt field (CRF) model to evaluate the sparseness of coefficients represented in the models．The results showed a low kurtosis in the distribution of coefficient with the surround-modulation model, but a low KL distance between the models indicated their distributions fairly closed to each other. Next, we modified the nonlinear function that controls sparseness in the cost function with the aim of improving the kurtosis．The modification did not improve the distribution．These results suggest that surround modulation would decrease sparseness of the information representation in V1 cells, or that representation might not be characterized solely by sparseness． |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Sparse Coding / Surrounding Modulation / V1 / / / / / |
| Reference Info. |
ITE Tech. Rep., vol. 33, no. 17, HI2009-76, pp. 33-36, March 2009. |
| Paper # |
HI2009-76 |
| Date of Issue |
2009-03-11 (HI) |
| ISSN |
Print edition: ISSN 1342-6893 |
| Download PDF |
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| Conference Information |
| Committee |
HI |
| Conference Date |
2009-03-18 - 2009-03-19 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Tokyo Institute of Technology |
| Topics (in Japanese) |
(See Japanese page) |
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| Paper Information |
| Registration To |
HI |
| Conference Code |
2009-03-HI |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Statistical analysis of information expression in V1 receipt field with sparseness constraint |
| Sub Title (in English) |
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| Keyword(1) |
Sparse Coding |
| Keyword(2) |
Surrounding Modulation |
| Keyword(3) |
V1 |
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| 1st Author's Name |
Yoshitaka Hirose |
| 1st Author's Affiliation |
University of Tsukuba (Univ. of Tsukuba) |
| 2nd Author's Name |
Ko Sakai |
| 2nd Author's Affiliation |
University of Tsukuba (Univ. of Tsukuba) |
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| Speaker |
Author-1 |
| Date Time |
2009-03-19 10:40:00 |
| Presentation Time |
20 minutes |
| Registration for |
HI |
| Paper # |
HI2009-76 |
| Volume (vol) |
vol.33 |
| Number (no) |
no.17 |
| Page |
pp.33-36 |
| #Pages |
4 |
| Date of Issue |
2009-03-11 (HI) |