Measures of Underlying Inflation
Measures of underlying inflation (the so-called "core inflation measures") -- obtained by removing transitory disturbances from the actual movements observed in the consumer prices -- are frequently used for inflation analysis. Instead of focusing on a specific core inflation measure, a comprehensive look at various core inflation measures enables us to identify the trends of price movements in a more accurate manner.
The Bank of Japan's Research and Statistics Department, therefore, releases the following five estimates in line with the monthly release of the official CPI for Japan: (1) CPI (less fresh food and energy); (2) diffusion index of increasing/decreasing items; (3) trimmed mean; (4) mode; and (5) weighted median.
These estimates are released in the following manner: (1), (2), and (3) at 2:00 p.m. on the same day as the official CPI for Japan; and three business days later for all estimates including (4) and (5), with the data set.
For more information on the estimation procedures and characteristics of these core inflation measures, please see the Bank of Japan Review Series below.
- Hogen, Kawamoto, and Nakahama (2015) "Core Inflation and the Business Cycle," Bank of Japan Review Series (2015-E-6).
- Shiratsuka (2015) "Performance of Consumer Price Index Core Indicators," Bank of Japan Review Series (2015-E-7).
Research Data
| Date | Title | Data |
|---|---|---|
| Aug. 31, 2016 | Charts | [PDF 135KB] |
| Aug. 31, 2016 | Data | [ZIP 22KB] |
| Aug. 26, 2016 | Chart (Preliminary Version) | [PDF 106KB] |
Base Year Revision
| Aug. 15, 2016 | Effects of the Official CPI Base Year Revision on the CPI (Less Fresh Food and Energy) [PDF 11KB] |
|---|
Explanation and Related Materials
Bank of Japan Review Series
- Hogen, Kawamoto, and Nakahama (2015) "Core Inflation and the Business Cycle," Bank of Japan Review Series (2015-E-6).
- Shiratsuka (2015) "Performance of Consumer Price Index Core Indicators," Bank of Japan Review Series (2015-E-7).
Notice
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Inquiries
Economic Assessment and Projection Group,
Economic Research Division, Research and Statistics Department
Tel : +81-3-3279-1111
