ms-ai-architect/docs/r11-pilot-results.md

R11 pilot results — measured, 2026-08-03

The §10 acceptance measurement of docs/r11-tiered-fix-design.md, run against the live ledger. No KB file was edited and no ledger record was written.

Instrument: scripts/kb-eval/lib/fix-op.mjs (+ tests/kb-eval/test-fix-op-classify.test.mjs, 30 tests) driven by scripts/kb-eval/classify-fix-ops.mjs. The classifier is the O1 driver with writes disabled — it constructs the swap and checks the §4 invariant, so measurements 1 and 3 come out of the mechanism that would later touch the corpus, not out of a proxy heuristic.

Artefact: scripts/kb-eval/data/r11-pilot-classification.json (untracked, regenerable; per-flag records so the run can be re-analysed without re-running).

Two different 202s. This population is 202 flags. §3's "202 flags whose claim and quote contain a numeric token" is a different 202, measured over the full 712-flag population. They are unrelated.

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1. The headline

Nine provable, correct value swaps exist in the entire 776-flag not_grounded population — 1.2 %. The machine half of the R11 tiering buys nine edits. Every other flag needs a human.

Population	Files	Flags	O1 admitted	O1 hand-verified correct
Pilot (not_grounded ≥ 7)	24	202	2	2
Whole not_grounded corpus	218	776	15	9

This is the answer §10 asked for, and it is materially worse than the design assumed: "If the split is materially worse than assumed, that is known after one session rather than after ten."

2. §4 as written is not sufficient — measured, not argued

§4 claims its invariant is "deliberately stronger than human review at scale." It is not. Run exactly as specified over the pilot, it admitted 6 swaps, of which 4 were wrong — precision 2/6:

Proposed swap	Why it is wrong
30-dagers → 24-dagers	Unit crossing. The quote says 24 hours.
3000 requests/sekund → 50	Metric crossing. The quote is a query throttle per index; the claim is an indexing rate per replica.
Microsoft Agent 365 → Agent 7	Identifier mutilated. The 7 was harvested out of E7.
text-embedding-ada-002 → ada-2	Identifier mutilated. The 2 came from a dimensions column.

The defect is structural, not incidental. §4 constrains where the new value came from (verbatim in the cited quote) and what the edit looks like (one line, rest byte-identical). It constrains nothing about whether the two tokens denote the same quantity. Same-type-and-provenance is not same-referent.

The added condition

contextCorresponds() requires the token to sit under the same label or the same trailing unit on both sides. It is deliberately lexical, with no translation table: dokumenter is not taught to equal documents, because a synonym table introduces a new fact source and is an operator decision, not an engineering one. Consequence, measured: a swap is provable essentially only where the context is language-neutral — a URL, a code sample, a parameter key.

3. The condition is necessary but still not sufficient

Corpus-wide the context condition cut 38 admissions to 15. Hand-verifying all 15 splits them cleanly by token type:

Token type	Proposals	Correct	Failure mode
iso_date	9	9	— every one is an api-version= bump in a URL or code sample
number	5	2	AI-900 → AI-901, gpt-4o → gpt-5.1o (×2)
version	1	0	Java agent 3.7.5 → 3.4.0 — a downgrade

A matching identifier prefix (AI-, gpt-) satisfies the context condition while the digit is part of a name, not a quantity. Only iso_date survives hand-verification, and the report marks it as the sole recommended class (o1_recommended). number and version proposals must not be applied.

4. The four §10 measurements

1. O1 / O2 / O3 split. O1 = 2/202 on the pilot (9/776 corpus-wide, safe class only). O2 is undetermined — it does not exist as a class until §5 is ratified, so every non-O1 item is O3 by design. O3 ≥ 200/202.

2. How much of R8 resolves as O2. Not answered, and not answerable by machine. R8 is 87/202 on the pilot (366/776 corpus-wide) and yields zero O1. Of the pilot's 87, 46 are structural enumerations — the O2 candidate shape. Which of them subtract cleanly turns on the judge's prose reason, and no regex reads prose. This needs prose classification (see §6).

3. O1 abort rate: 99 % (200/202). Typed, because "99 %" alone is not actionable:

   Code	Pilot	Class
   MULTI_PART_CLAIM	96 (47.5 %)	intrinsic — not a value swap at all
   MULTI_VALUE_TOKEN	29	intrinsic
   NO_VALUE_TOKEN	28	intrinsic — the claim asserts prose
   STATUS_SYNONYM	15	operator question (§6.2)
   NOT_VERBATIM	15	intrinsic
   LOCATOR_AMBIGUOUS	7	fixable engineering gap
   MULTI_REPLACEMENT	6	intrinsic
   CONTEXT_MISMATCH	4	intrinsic — these are the 4 wrong edits above

   Only 7 of 200 aborts (3.5 %) are a fixable engineering gap. More locator engineering cannot move the O1 number materially.

4. Review throughput per class. NOT MEASURED. It requires human review sessions, which have not happened. Recording it as measured would be false.

5. Two further findings

F1 — subtraction can leave a misleading remainder. §5 argues O2 "cannot introduce a new error, because it asserts strictly less." True of the sentence, false of the reader's inference. Real case: *"Deep Research tool (o3-deep-research

• Bing) er GA (juni 2025)"* where the source says the tool is deprecated. Subtracting er GA (juni 2025) leaves the tool standing in a list of available tools. Strictly less asserted; still misleading. O2 therefore still requires a human to look at the remainder — cheaper than O3 (no fact-finding) but not mechanical.

F2 — subtraction can destroy true information. Real case: a list of seven prebuilt model IDs where the judge found six correct and prebuilt-check wrong — the real ID is prebuilt-check.us. Subtraction drops a model that exists; the correct fix is a swap. Subtraction is not the safe default everywhere.

F3 — disposition carries zero information. It is outdated on 202 of 202 flags. docs/r11-flag-format-2026-07.md specifies not_grounded → {outdated, wrong} with "the human assigns which at R11", but the pass hard-assigned outdated. Do not use it as a classifier signal. Spec/data divergence, recorded.

F4 — claims are not file text. claim is an LLM-extracted, translated restatement: 0 of 202 match their file line verbatim, and 188 share no 40-char run with it. For table claims, line points at the header, not the value. This is why the locator exists at all, and why it searches the enclosing block rather than the line.

6. Open operator decisions

1. Ratify O2 (§5)? Until then O2 does not exist and everything is O3. F1/F2 above argue for ratifying it with a remainder check rather than as a blanket rule.
2. Amend §4 with a ratified synonym table? 15 pilot flags (54 corpus-wide) are STATUS_SYNONYM: the corpus writes **Preview** / **GA**, the source writes "generally available". Either a small ratified equivalence table admits them, or they are permanently O3.
3. Is O1 worth building at all? Nine edits corpus-wide, all api-version bumps. The alternative is to drop the O1 driver and treat those nine as O3.

7. What this does not change

The design's core reading survives: the expensive half (locating the source, reading it, extracting the deciding passage) was already paid for by the judge pass, and §7's freshness re-fetch per distinct URL is untouched. What the pilot falsifies is the assumption that a meaningful share of that evidence converts into machine-provable edits. It does not. R11 is a human review programme with a nine-item machine assist, and its leverage lies entirely in the O2 decision.