Direction of monetary-base expansion decisions relative to trend. Separate from fiscal.transfer_expansion even when correlated.
Bank of Japan under Governor Toshihiko Fukui exited quantitative easing March 2006 and raised policy rate from 0% to 0.25% on 14 July 2006, then to 0.50% on 21 February 2007 — the first policy-rate hike cycle after six years of zero-interest-rate policy. Decision rested on judgement that deflation had ended on a sustained basis (core-core CPI turning mildly positive) and that housing/asset markets required incremental normalisation. With hindsight the hikes proved premature — deflation returned 2009 — and the episode is frequently cited (including by Abe II / Kuroda in 2013) as justification for the subsequent QQE commitment.
Per invariant 3, reforms are scored by what they did on each channel-separated axis, not by the party that enacted them. This fingerprint is how the policy-match engine finds historical analogues.
Explicit links are curated by the author. Inferred links are hypotheses in the library that test the same axes this policy moved — the framework's answer to "what does the data say about a policy like this?".
Ranked by axis-fingerprint overlap with this policy. Direction match bolded — those are the closest historical analogues. Shape of the match is what drives policy-outcome comparison, not the country or party label.