| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
|
|---|
| Outline of Final Research Achievements |
Density ratio is defined as the ratio of two probability densities. That is very useful when two distinct data domains are compared. Important applications of the density ratio includes regression analysis and classification problems under covariate shift, statistical test, and dimension reduction. In this study, we developed methods to improve the statistical accuracy and computational efficiency of density ratio estimation. Moreover, we studied the relation between density ration and statistical divergences which is regarded as a discrepancy measure between two probability distributions. Statistical usefulness of the divergence is considered from the view point of the density ratio.
|
