| Budget Amount *help |
¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Outline of Final Research Achievements |
In the previous research on the consumer price index, research on the consumer price facing by different income groups and family characters has been conducted individually. In this research, we propose a method to solve these two problems at the same time by going back to the viewpoint of the change of utility level.
By estimating the expenditure function by income quintile groups, we identify the effects of household head age household characters, and cohort. We also use a polynomial function to estimate the effect of overlapping cohorts. It has been clarified that it is effective to measure the household head age group based on approximation by polynomial or dummy variables. However, the linear expenditure system based on the traditional Stone=Geary type utility function is the easiest to handle. It is also clear that the problem of model selection is important for the progress of research.
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