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Efficient Answering of Historical What-if Queries

Summary: Proposes historical what-if queries to quantify the impact of hypothetical history changes on current data. Uses reenactment with program and data slicing to prune irrelevant updates, enabling efficient evaluation of modified histories; implemented in Mahif and demonstrated experimentally. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID
6451
Venue
SIGMOD
Year
2022
Pagerank
6.0127053e-05
Overall Rank
4,664 | 67.56%
DOI
10.1145/3514221.3526138

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