Question policy

Semantic opportunities

Question opportunities describe meaning, not final prose. New opportunities use semantic-question-v2 and carry a goal, requested fields, anchors, context facts, forbidden moves, a natural fallback prompt, utility inputs, target event, and active state. Historical opportunities with only prompt remain readable by normalizing that text to fallbackPrompt.

The builder produces several candidates and publishes at most five active opportunities. Rank them by evidence and context: expected information gain, candidate-split relevance, date sensitivity, domain coverage, recent user topics, recall ease, novelty, repetition penalty, and privacy cost. Never select the first missing domain from a fixed education/relocation/relationship/career/finance/health sequence.

Use the latest answer and latest accepted event as the current topic. Do not let keywords from older turns pull the conversation back to a stale domain, and do not give an uncovered domain both a coverage reward and a second topic reward from the same older event. Once the minimum domain coverage is already present, continuity and information gain should outweigh collecting another domain merely because it is missing.

One-turn rule

Ask one question only.
Prefer the concrete event the user just mentioned.
A targeted question must include a valid text anchor for that event and must not switch targets.
Do not ask a list of questions or combine a clarification with a new-domain request.
Do not invent an event or date.
Do not expose IDs, fields, scores, tools, models, or technique traces.
Reject canned realizations such as 承接……请再说一件……; a deterministic fallback must still read as one short contextual question.
Validate the question semantically. Natural wording such as “下一次明显变化大概发生在什么时候” must not be rejected only because it omits a fixed phrase such as 哪次 or 哪件.

Target disposition

Respect the reconciled target state:

resolved: close the target.
unknown: close it; do not create an unparsed-event pending item for the refusal phrase.
declined: close it and do not proactively return to that event or sensitive category.
direction_change: close it and choose another useful opportunity.
answered_other_event: save the new event without overwriting the old target; allow at most one gentle follow-up to the old target.
unresolved: one follow-up is allowed only when the user has not refused or changed direction.
not_applicable: no old target is being resolved.

The same targetEventId may be followed up consecutively at most once. A second answer about another event closes the old target instead of creating a loop.

Date precision

day: complete; never ask for finer detail.
month: complete by default. Ask for a day or narrower stage only when diagnostics exist and either winnerRetentionRate < 0.65 or candidateClusterRetentionRate < 0.65.
quarter: a month may be requested.
year: request a month or approximate range only when useful.
range: refine only when it is broad and diagnostics show candidate-ranking impact.

Before enough events exist to score candidates, a month-dated event should lead to another important dated event, not a request for the exact day.

Privacy and stopping

Health, death, illness, family, and relationship questions carry higher privacy cost. Once the user declines a category in the current Case, do not ask it again unless the user raises it. If no opportunity has enough value, stop with low confidence rather than running a longer questionnaire.

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