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"instance_id": "assignment_small_s42",
"problem_type": "assignment",
"size": "small",
"seed": 42,
"label": "Assignment (small)",
"features": {
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"coefficient_range": 100.0,
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"customer_clustering": 0.0,
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"confidence": 0.674,
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"predicted_gap_pct": 3.125,
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"rationale": "Assignment (small): 25 variables, 10 constraints | Structure: binary=100%, integer=100%, tightness=0.50 | Top pick: OR-Tools CP-SAT (score=1.360, pred gap=3.1%, feasible=92%) | Runner-up: MiniZinc (\u0394=0.070)",
"rankings": [
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"config": {
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"solver": "chuffed",
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"config": {
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{
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"feasible_probability": 0.94,
"config": {
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"MIPFocus": 1,
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{
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"config": {
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{
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"config": {
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"presolve": "on",
"threads": 4,
"mip_rel_gap": 0.01,
"cut_strategy": "aggressive"
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{
"solver_id": "cbc",
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"config": {
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{
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]
}
} |