| Budget Amount *help |
¥72,540,000 (Direct Cost: ¥55,800,000、Indirect Cost: ¥16,740,000)
Fiscal Year 2017: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
Fiscal Year 2016: ¥14,170,000 (Direct Cost: ¥10,900,000、Indirect Cost: ¥3,270,000)
Fiscal Year 2015: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
Fiscal Year 2014: ¥14,170,000 (Direct Cost: ¥10,900,000、Indirect Cost: ¥3,270,000)
Fiscal Year 2013: ¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
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| Outline of Final Research Achievements |
Asteroids are classified based on their reflectance spectra, which are compared with those of meteorites, which are known to be mostly originated from asteroids. However, some types of asteroids do not really match with meteorites, and their direct comparisons are generally difficult without professional skills. We applied the concept of the sparse modelling to connect asteroids with meteorites to search for the optimal integration scheme for two different databases without relying on preliminary knowledge. We developed large databases of asteroids and meteorites for easy application of sparse modelling. Through our analyses including principal component analysis, Bayesian spectral deconvolution and dimensionality reduction, we found that our data-driven approach can extract potential information consistent with previous studies. Our methods show a new type of data handling scheme for asteroid and meteorite data, potentially having a significant contribution for future missions.
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