| Presentation | 2015-09-08 Model Selection from the q-Exponential Distribution for Constructing an Organ Point Distribution Model Mitsunori Yamada, Hidekata Hontani, Hiroshi Matsuzoe, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The authors propose a method that selects an appropriate distribution model for accurately representing statistics of the shape of an organ with a PDM (Point Distribution Model). Normal distributions are widely employed for representing the statistical models in PDMs because the normal distributions have small number of parameters to be estimated and because the normal distributions make the inference for the registration of the models easier. A set of training data often includes some data of which Mahalanobis distances from the mean are much larger than those of the other data and the values of the estimated parameters can be inaccurate when such the data are included if you employ the normal distribution for the model representation. The authors employ a $q$-exponential distribution in order to handle this problem. The $q$-exponential distribution includes the normal distribution and the student-t distribution. Given a set of training data, the proposed method selects an appropriate distribution from the $q$-exponential ones for each region of a target organ in order to represent the statistical model of the target organ accurately. Using the proposed method for constructing a statistical model of the liver, the authors found that distributions with longer tails were selected in the regions that faced the inside of the body. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Point Distribution Model(PDM) / Model Selection / q-exponential distribution / AIC |
| Paper # | MI2015-54 |
| Date of Issue | 2015-09-01 (MI) |
| Conference Information | |
| Committee | MI |
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| Conference Date | 2015/9/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Univ. of Electro-communications |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Machine learning and its application to medical image processing |
| Chair | Yoshitaka Masutani(Hiroshima City Univ.) |
| Vice Chair | Yoshiki Kawata(Tokushima Univ.) / Yuichi Kimura(Kinki Univ.) |
| Secretary | Yoshiki Kawata(Aichi Inst. of Tech.) / Yuichi Kimura(Nagoya Inst. of Tech.) |
| Assistant | Ryo Haraguchi(NCVC) / Yasushi Hirano(Yamaguchi Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Medical Imaging |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Model Selection from the q-Exponential Distribution for Constructing an Organ Point Distribution Model |
| Sub Title (in English) | |
| Keyword(1) | Point Distribution Model(PDM) |
| Keyword(2) | Model Selection |
| Keyword(3) | q-exponential distribution |
| Keyword(4) | AIC |
| 1st Author's Name | Mitsunori Yamada |
| 1st Author's Affiliation | Nagoya Institute of Technology(NIT) |
| 2nd Author's Name | Hidekata Hontani |
| 2nd Author's Affiliation | Nagoya Institute of Technology(NIT) |
| 3rd Author's Name | Hiroshi Matsuzoe |
| 3rd Author's Affiliation | Nagoya Institute of Technology(NIT) |
| Date | 2015-09-08 |
| Paper # | MI2015-54 |
| Volume (vol) | vol.115 |
| Number (no) | MI-218 |
| Page | pp.pp.31-34(MI), |
| #Pages | 4 |
| Date of Issue | 2015-09-01 (MI) |