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Relational E-Matching

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arxiv 2108.02290 v2 pith:HPH3H6UH submitted 2021-08-04 cs.DB cs.PL

classification cs.DBcs.PL
keywords e-matchinge-graphrelationalapproachcomparedconventionalquerysize
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We present a new approach to e-matching based on relational join; in particular, we apply recent database query execution techniques to guarantee worst-case optimal run time. Compared to the conventional backtracking approach that always searches the e-graph "top down", our new relational e-matching approach can better exploit pattern structure by searching the e-graph according to an optimized query plan. We also establish the first data complexity result for e-matching, bounding run time as a function of the e-graph size and output size. We prototyped and evaluated our technique in the state-of-the-art egg e-graph framework. Compared to a conventional baseline, relational e-matching is simpler to implement and orders of magnitude faster in practice.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. rEGGression: an Interactive and Agnostic Tool for the Exploration of Symbolic Regression Models

    cs.LG 2025-01 conditional novelty 6.0 of 10

    rEGGression uses e-graphs to store and interactively explore large sets of symbolic regression expressions, with pattern matching and building-block distribution queries.

  2. Omelets Need Onions: E-graphs Modulo Theories via Bottom-up E-matching

    cs.PL 2025-04 conditional novelty 4.0 of 10

    The paper proposes bottom-up e-matching plus semantic e-ids as a pragmatic way to make e-graphs work modulo mathematical theories.

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