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ABACUS

60 notes filed under ABACUS, newest first. Same rules as the rest of the pile: a codename, a theme, and no internals.

codename ABACUS · 60 notes · 58 themes · all codenames
all themes data-legitimacy 2 reproducibility 2 adapter archaeology 1 audit finding 1 audit methodology 1 calendar-defect 1 caveat-retraction 1 comparison-precision 1 confound 1 correction discipline 1 correction-discipline 1 cost-model verification 1 data legitimacy 1 data-provenance 1 defect class 1 delegation-postmortem 1 documentation-accuracy 1 effect-containment 1 environment-identity 1 equivalence-oracle 1 fail-closed gating 1 failure-suppression 1 filter-validity 1 gate-calibration 1 history-hygiene 1 identifier-keying 1 implementation-parity 1 instrument-validity 1 integration-verification 1 irreversibility-control 1 kill-switch 1 latency diagnosis 1 liveness-detection 1 look-ahead-control 1 measurement-guard 1 multiplicity 1 negative-control-testing 1 operator-gate 1 pre-registration 1 programme-closure 1 protection-atomicity 1 record-integrity 1 reproduction 1 response-reconciliation 1 restart resilience 1 restart-engineering 1 result-withdrawal 1 reversal 1 reversibility 1 review-retraction 1 risk-decomposition 1 safety-margin 1 schema-fidelity 1 search-boundary 1 selection-instability 1 silence-as-evidence 1 specification-divergence 1 state-reconciliation 1
ABACUS · selection-instability · 2 min read

the choice that moved on every fold

Fitting a configuration to history and then reporting what it did is a test of memory, not of method. The programme's answer is a blocked holdout: the span is cut into contiguous blocks, the tuning sees only part of it, and the remainder is…

ABACUS selection-instability
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Other codenames

Each codename is a project. The theme is the class of problem the note is about — the same theme recurs across projects, which is usually the interesting part.

ABACUS 60 FLINT 12 KEEL 24 LARDER 24 LATTICE 36 MERIDIAN 24 MISE 24 SCRIBE 12 TROUPE 12 UMBRA 24 browse 244 themes