Adds a third comparison arm to measure_signposting_rate(): Task 19c's
first per-code pass (git ref da72bf3, self-coverage allowed) alongside
the existing coarse (b0df1ec) and live corrected per-code arms, pulled
verbatim via the same git-show mechanism (renamed
.measure_load_coarse_impl -> .measure_load_git_impl since it now loads
more than the coarse arm).
Reports both the original delta (self-coverage-allowed rate minus
coarse) and the corrected delta (live per-code rate minus coarse), plus
the self-coverage share of the original delta (queries that fired ONLY
because a component's own aggregate row satisfied its own coverage
check). Verifies percode-fired is always a subset of selfcov-fired
(stopifnot) -- the corrected arm is a strict narrowing of the buggy one,
so the decomposition is exact rather than approximate.
data-raw/measure_signposting_rate.R runs every summary_categories
category x a (seeded, deterministic) sample of up to 20 governments x
the widest pre/post-2012 year span the active corpus actually supports,
through both the R2 coarse .build_suggestions() (pulled verbatim from
git ref b0df1ec, evaluated in an isolated env parented on the uscogdata
namespace) and the current per-code version, and reports the suggestion
rate and delta under each, overall and by category.
Parameterized by USCOGDATA_URL (defaults to the bundled fixture when
unset) so it can be re-run against the staged/full corpus later. Detects
and reports when the active corpus can't fill a full 3-year pre/3-year
post-2012 design instead of padding or fabricating years. This script
measures the coarse-vs-per-code tradeoff; it does not rule on what
suggestion-rate increase is an acceptable amount of added noise -- that
is Jared's call at Checkpoint R3.
jared