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About this paper

Junhao Shen, Qing Zong, Yue Guo, Zhanqiu Zhang, Yiwen Guo, Hong Cheng

MMDM introduces a benchmark for testing decision models on long-context choices, interdependent options, and constraints. It covers single-select, complete multi-select, and probability-distribution tasks across 5,448 questions. Perplexity Decider-V1.2 scores 78.75% on World Knowledge but 47.95% on Constraint Planning; the strongest hard multi-select accuracy is 36.81%. These category comparisons are not causal, and the benchmark tests fixed text rather than execution.

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