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arxiv: 2607.08324 · 2 revisions

Shared-Donor Inference for Heterogeneity in Many-Group Synthetic Difference-in-Differences

1. 2026-08-04 ACCEPT MODERATE v1.3.0-alltime-deepseek novelty 7.0
   111532 ms 31229 in 10905 out 2026-08-04T01:40:21.452607+00:00
2. 2026-07-10 CONDITIONAL HIGH v1.1.0-grok45 novelty 7.0
   44787 ms 60065 in 4128 out 2026-07-10T09:23:07.844668+00:00