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All corrections to indicators, member profiles, council records, and aggregated values are logged with severity (Critical / Major / Minor), pre-correction value, post-correction value, date, and source.
To preserve Machikarte's neutrality, third-party stance, and citation-readiness, we publish our data-integrity policy. This includes indicator definitions, aggregate base populations (e.g., 1,747 nationally crawled municipalities), and aggregation constraints (e.g., 100+ speeches filter for theme volume rankings).
Machikarte is a neutral data basis and does not produce editorial commentary on this site. Commentary articles based on Machikarte data are published at the ISVD Labs page, operated by the parent organisation.
All data on this site is published under Creative Commons Attribution 4.0 International (CC BY 4.0, commercial use permitted with attribution). You may freely use the data for journalism, research, and education. Please attribute the source as "Machikarte (machikarte.isvd.or.jp)".