task_charts__combo_mark__absolute_gap_extremum_label

Contract

1. Domain: charts
2. Scene id: combo_mark
3. Source implementation domain/scene: charts/combo_mark
4. Query ids: largest_absolute_gap_label, smallest_nonzero_absolute_gap_label
5. Semantic query details are recorded in query_id and trace params.

Implementation

1. Registered class: trace_tasks.tasks.charts.combo_mark.absolute_gap_extremum_label.ChartsComboAbsoluteGapExtremumLabelTask
2. Prompt lookup domain/scene: charts/combo_mark
3. Generation is deterministic from instance_seed, explicit params, prompt bundle, renderer config, and code versions.
4. Answers and annotation are produced from the same metadata execution trace.

Annotation Contract

1. Answer schema: string_label.
2. Annotation schema: point_map.
3. Annotation uses fixed keys primary_mark and line_mark for the answer category; dynamic category-label keys are not used.
4. Annotation should mark the minimal visual witnesses required by the task, following the cross-domain annotation policy.
5. Renderer context such as legends, axes, decorative labels, titles, and distractor text is metadata unless the task explicitly asks for it as annotation.

Program Contract

Program: arg_extreme(x_label, abs(value(primary,x_label)-value(line,x_label)), mode={largest,smallest_nonzero}); output=string_label; annotation=point_map(primary_mark, line_mark); scene=combo_mark; scope=absolute_gap_extremum_label

Candidate set: the visible primary marks, secondary-line marks, and shared category labels inside the absolute_gap_extremum_label objective scope. Operands: prompt-bound labels, categories, series names, thresholds, intervals, references, and encoded chart values, plus the active query id's comparator, direction, target role, or extremum focus when present. Operation: evaluate arg_extreme over the candidate set using the filters, comparisons, aggregations, rankings, projections, or counterfactual edits named in the program expression; generation enforces a unique final answer. Output binding: answer is the string_label value bound by string_label. Annotation witnesses: point_map witnesses bound by point_map(primary_mark, line_mark). Annotation uses fixed keys primary_mark and line_mark for the answer category; dynamic category-label keys are not used. Annotation should mark the minimal visual witnesses required by the task, following the cross-domain annotation policy. Renderer context such as legends, axes, decorative labels, titles, and distractor text is metadata unless the task explicitly asks for it as annotation. Query ids: largest_absolute_gap_label, smallest_nonzero_absolute_gap_label.

Reasoning Operations

Families: ranking, formula_evaluation

Query Details

Query id	Program signature	Answer schema	Annotation schema
largest_absolute_gap_label	selection.absolute_gap_extremum_label	string_label	point_map
smallest_nonzero_absolute_gap_label	selection.absolute_gap_extremum_label	string_label	point_map