task_charts__sankey__source_to_target_total_flow

Contract

1. Domain: charts
2. Scene id: sankey
3. Task id: task_charts__sankey__source_to_target_total_flow
4. Objective contract: source_to_target_total_flow
5. Supported query_id values: single

Program Contract

Program: sum(min(value(source_to_middle), value(middle_to_target)) for route in routes(source_label, target_label)); scene=sankey; scope=source_to_target_total_flow

Candidate set: the visible flow nodes, links, and labels inside the source_to_target_total_flow objective scope. Operands: prompt-bound labels, categories, series names, thresholds, intervals, references, and encoded chart values, plus the task's prompt-bound target operands when present. Operation: evaluate sum 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 integer_value value bound by integer_value. Annotation witnesses: point_set witnesses bound by see_annotation_contract. Annotation marks the set of printed value-label centers for the selected route bottlenecks included in the sum. Node boxes, non-bottleneck labels on selected routes, unselected flow labels, flow curves, title, and panel frame are context unless explicitly referenced by the task. Query ids: single.

Reasoning Operations

Families: ranking, aggregation, topology

Implementation

1. Registered class: trace_tasks.tasks.charts.sankey.source_to_target_total_flow.ChartsFlowSankeySourceToTargetTotalFlowPublicTask
2. Prompt bundle: charts_sankey_v1
3. Scene key: sankey
4. Task key: sankey_path_query
5. Query key: source_to_target_total_flow

Annotation Contract

1. Answer schema: integer_value
2. Annotation schema: point_set
3. Annotation marks the set of printed value-label centers for the selected route bottlenecks included in the sum.
4. Node boxes, non-bottleneck labels on selected routes, unselected flow labels, flow curves, title, and panel frame are context unless explicitly referenced by the task.

Query Details

Query id	Program argument	Answer schema	Annotation schema
single	source_label,target_label	integer_value	point_set