task_charts__boxplot__paired_median_shift_label

Contract

1. Domain: charts
2. Scene id: boxplot
3. Source implementation scene: charts/boxplot
4. Query ids: paired_median_greatest_increase_label, paired_median_greatest_decrease_label, paired_median_greatest_absolute_change_label
5. Semantic query details are recorded in query_id and trace params.

Implementation

1. Registered class: trace_tasks.tasks.charts.boxplot.paired_median_shift_label.ChartsDistributionBoxplotPairedMedianShiftLabelTask
2. Prompt lookup source scene: charts/boxplot
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 should mark the minimal visual witnesses required by the task, following the cross-domain annotation policy.
4. 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(pair_label, median(after_boxplot)-median(before_boxplot), mode={increase,decrease,absolute_change}); output=string_label; annotation=point_map(before_boxplot, after_boxplot); scene=boxplot; scope=paired_median_shift_label

Candidate set: the visible boxplot glyphs and their group labels inside the paired_median_shift_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(before_boxplot, after_boxplot). 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: paired_median_greatest_increase_label, paired_median_greatest_decrease_label, paired_median_greatest_absolute_change_label.

Reasoning Operations

Families: ranking, formula_evaluation

Query Details

Query id	Program signature	Answer schema	Annotation schema
paired_median_greatest_increase_label	selection.paired_median_shift_extremum_label	string_label	point_map
paired_median_greatest_decrease_label	selection.paired_median_shift_extremum_label	string_label	point_map
paired_median_greatest_absolute_change_label	selection.paired_median_shift_extremum_label	string_label	point_map