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A Brick Factory
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Advanced Website Design: Build the Pareto Frontier Before You Pick the Weights
An exhaustive Pareto-frontier solution to the Advanced Website Design challenge showing that five nondominated cost-value tradeoffs are missed by a simple weighted-sum objective.
Balanced Assignment with Simulated Annealing: When a Heuristic Reaches the Proven Optimum
A pair-swap simulated annealing solution to the 210-person Balanced Assignment challenge that reaches a mathematically derived lower bound of 3,370, turning a heuristic result into a proven global optimum.
Case Assignments: Preserve Option Value Before You Go Greedy
A regret-aware assignment heuristic for the April 2025 Case Assignments challenge, validated against HiGHS and exhaustive enumeration. A locally attractive greedy move consumes the only future option and makes the sequence infeasible.