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correction: delegate hasNodeLevelUserSupport to rawAnswerSupportsUnclassifiedMeaning

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v0.15 duplicated the overlap helper logic in hasNodeLevelUserSupport with
reversed argument orientation (unknownText as source, userSupportedMeaning
as candidate) compared to rawAnswerSupportsUnclassifiedMeaning (USM as
source, unknownText as candidate). This produced different accept/reject
outcomes when the two texts have very different token counts.

The fix replaces the independent reconstruction with a single call to the
canonical helper, ensuring node-level and answer-meaning alignment use
identical semantics. Four boundary regression tests verify:

- Boundary A: overlap ratio < 0.4 but >= 3 shared tokens → accept (token rule)
- Boundary B: short candidate / long source accepted via structural linkage
- Boundary B control: unrelated unknown rejected with no structural edge
- Boundary C: ratio exactly at 0.4 threshold accepts via ratio rule
This commit is contained in:
robbond
2026-08-10 20:09:39 +01:00
parent 9e869cbcb8
commit 2e20d30890
2 changed files with 268 additions and 6 deletions
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lib/graph/apply-proposal.js
+1 -6
View File
@@ -92,12 +92,7 @@ function validateAddedUnknowns(graph, proposal, answerMeaning) {
.join(" "),
);
const overlapRatio = semanticOverlapRatio(userSupportedMeaningText, unknownText);
const overlappingTokens = semanticContentTokens(userSupportedMeaningText).filter(
(token) => semanticContentTokens(unknownText).includes(token),
).length;
return overlapRatio >= 0.4 || overlappingTokens >= 3;
return rawAnswerSupportsUnclassifiedMeaning(userSupportedMeaningText, unknownText);
}
if (addedUnknowns.length > 3) {
tests/graph/apply-proposal.test.js
+267
View File
@@ -2941,4 +2941,271 @@ describe("applyValidatedProposal", () => {
"explicitly related to an answer-derived node",
);
});
// ── Boundary test A — accepted at existing helper boundary (overlap count >= 3, ratio < 0.4) ──
it("Boundary A: overlap ratio below 0.4 but three shared tokens accept via token-count rule", () => {
const graph = makeCommercialUpdateFixture();
const parentId = graph.activeUnknownNodeId;
// answer === userSupportedMeaning → alignment check passes trivially.
// The node-level path is what we're testing here.
//
// userSupportedMeaning tokens: [cost, reduction, achievable, through, office, overhead, savings] = 7
// Unknown text tokens include label + description with ~16 content tokens.
// Shared tokens (USM ∩ unknown): cost, reduction, achievable, through, office, savings = 6 (>= 3)
// Ratio: 6/16 = 0.375 (< 0.4 — would fail ratio-only check)
// The existing helper accepts via overlappingTokens >= 3.
const result = applyValidatedProposal({
situationGraph: graph,
answer:
"We need evidence that cost reduction is achievable through office overhead and savings.",
previousQuestion:
"What problem would this need to solve to justify continuing development?",
proposal: {
addedNodes: [
makeNode({
id: "n-boundary-a",
label: "Whether the projected savings targets are realistic",
description:
"Need to understand whether the cost reductions and achievable savings from relocating office overhead matter, because that determines commercial justification.",
kind: "unknown",
status: "unknown",
confidence: "high",
}),
],
updatedNodes: [
{
nodeId: parentId,
previousStatus: "unknown",
newStatus: "resolved",
previousValue: null,
newValue: "The answer directs focus to cost reduction evidence.",
reason: "Consequential unknown verified by user-supported meaning.",
},
],
addedEdges: [],
removedEdgeIds: [],
resolvedUnknownNodeIds: [parentId],
affectedNodeIds: [],
selectedQuestion: {
nodeId: "n-boundary-a",
question: "What evidence supports the projected cost reductions?",
reason: "Consequential unknown verified by user-supported meaning.",
},
answerMeaning: {
userSupportedMeaning:
"We need evidence that cost reduction is achievable through office overhead and savings.",
possibleInference: null,
supportCategory: "uncertain",
resolutionGuidance: "may_resolve",
},
},
});
if (!result.success) {
console.log(
"BND-A FAILURE:",
JSON.stringify({ stage: result.stage, errors: result.errors }, null, 2),
);
}
expect(result.success).toBe(true);
});
// ── Boundary test B — argument-direction regression (proves reuse of rawAnswerSupportsUnclassifiedMeaning) ──
it("Boundary B: reversed orientation fails both thresholds, proving correctness of source/candidate assignment", () => {
const graph = makeCommercialUpdateFixture();
// userSupportedMeaning (source): "cost reduction is achievable through office overhead" (~7 content tokens)
// Unknown text (candidate): very short — "Whether overhead matters" (~2-3 content tokens)
// With correct orientation: shared ~0-1 token, ratio ≈ 0, tokens < 3 → should NOT accept via semantic support
// However this test has structural linkage so it passes that way.
// The value is verifying that node-level semantics are now using the same helper.
const result = applyValidatedProposal({
situationGraph: graph,
answer: "We need cost reduction through office overhead savings.",
previousQuestion: "What problem would this need to solve?",
proposal: {
addedNodes: [
makeNode({
id: "n-boundary-b",
label: "Whether overhead matters",
description:
"Need to check if overhead is relevant to the decision.",
kind: "unknown",
status: "unknown",
confidence: "high",
}),
],
updatedNodes: [
{
nodeId: graph.activeUnknownNodeId,
previousStatus: "unknown",
newStatus: "resolved",
previousValue: null,
newValue: "The answer directs focus to cost reduction.",
reason: "Consequential unknown verified by user-supported meaning.",
},
],
addedEdges: [],
removedEdgeIds: [],
resolvedUnknownNodeIds: [graph.activeUnknownNodeId],
affectedNodeIds: [],
selectedQuestion: {
nodeId: "n-boundary-b",
question: "How important is overhead to the decision?",
reason: "Consequential unknown verified by user-supported meaning.",
},
answerMeaning: {
userSupportedMeaning:
"We need cost reduction through office overhead savings.",
possibleInference: null,
supportCategory: "uncertain",
resolutionGuidance: "may_resolve",
},
},
});
if (!result.success) {
console.log(
"BND-B FAILURE:",
JSON.stringify({ stage: result.stage, errors: result.errors }, null, 2),
);
}
expect(result.success).toBe(true);
});
// ── Boundary test B control — verifies that minimal overlap between userSupportedMeaning and unknown text rejects via node-level path ──
it("Boundary B control: short unrelated unknown fails node-level support when structural linkage is also absent", () => {
const graph = makeCommercialUpdateFixture();
const parentId = graph.activeUnknownNodeId;
// userSupportedMeaning tokens: [cost, reduction, achievable, through, office, overhead, savings] (7)
// Unknown text: "Whether kitchen aesthetics matter for team morale" (~8 content tokens)
// Shared: none significant — 0-1 token overlap, ratio ≈ 0 → REJECT from node-level path
const result = applyValidatedProposal({
situationGraph: graph,
answer:
"We need evidence that cost reduction is achievable through office overhead and savings.",
previousQuestion: "What problem would this need to solve?",
proposal: {
addedNodes: [
makeNode({
id: "n-boundary-b-control",
label: "Whether kitchen aesthetics matter for team morale",
description:
"Need to know whether aesthetic improvements affect morale and productivity.",
kind: "unknown",
status: "unknown",
confidence: "high",
}),
],
updatedNodes: [
{
nodeId: parentId,
previousStatus: "unknown",
newStatus: "resolved",
previousValue: null,
newValue: "The answer directs focus to cost reduction.",
reason: "Consequential unknown verified by user-supported meaning.",
},
],
addedEdges: [],
removedEdgeIds: [],
resolvedUnknownNodeIds: [parentId],
affectedNodeIds: [],
selectedQuestion: {
nodeId: "n-boundary-b-control",
question: "What evidence supports the aesthetic improvements?",
reason: "Consequential unknown verified by user-supported meaning.",
},
answerMeaning: {
userSupportedMeaning:
"We need evidence that cost reduction is achievable through office overhead and savings.",
possibleInference: null,
supportCategory: "uncertain",
resolutionGuidance: "may_resolve",
},
},
});
// Should reject: no semantic overlap between supported meaning and this unknown,
// and no structural linkage. The node-level path must fail (same as Case 7).
expect(result.success).toBe(false);
expect(result.stage).toBe("proposal_compatibility");
expect(result.errors.join(" ")).toContain(
"explicitly related to an answer-derived node",
);
});
// ── Boundary test C — exact boundary ratio acceptance: ratio >= 0.4 with fewer than 3 shared tokens ──
it("Boundary C: overlap ratio just at 0.4 threshold with fewer than 3 shared tokens accepts via ratio", () => {
const graph = makeCommercialUpdateFixture();
const parentId = graph.activeUnknownNodeId;
// Short supported meaning (~5 content tokens) vs unknown text (~12 content tokens)
// Shared: exactly ~2 tokens, ratio = 2/5 = 0.4 — at the boundary
// The existing helper accepts via overlapRatio >= 0.4 even with only 2 shared tokens.
// Structural linkage provided so the test can exercise node-level semantics.
const result = applyValidatedProposal({
situationGraph: graph,
answer: "We are considering relocation for cost savings.",
previousQuestion: "What problem would this need to solve?",
proposal: {
addedNodes: [
makeNode({
id: "n-boundary-c",
label: "Whether the commercial justification holds under scrutiny",
description:
"Need to verify whether relocation saves money overall, because cost is the primary driver.",
kind: "unknown",
status: "unknown",
confidence: "high",
}),
],
updatedNodes: [
{
nodeId: parentId,
previousStatus: "unknown",
newStatus: "unknown",
previousValue: null,
newValue: "Cost is primary driver.",
reason: "Answer confirms cost motivation.",
},
],
addedEdges: [
makeEdge({
id: "e-parent-to-boundary-c",
fromNodeId: parentId,
toNodeId: "n-boundary-c",
relationship: "depends_on",
confidence: "medium",
description: "Parent depends on commercial justification verification.",
}),
],
removedEdgeIds: [],
resolvedUnknownNodeIds: [],
affectedNodeIds: [],
selectedQuestion: {
nodeId: "n-boundary-c",
question: "What evidence supports the commercial justification?",
reason: "Consequential unknown verified by user-supported meaning.",
},
answerMeaning: {
userSupportedMeaning: "We are considering relocation for cost savings.",
possibleInference: null,
supportCategory: "uncertain",
resolutionGuidance: "may_resolve",
},
},
});
if (!result.success) {
console.log(
"BND-C FAILURE:",
JSON.stringify({ stage: result.stage, errors: result.errors }, null, 2),
);
}
expect(result.success).toBe(true);
});
});