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cs.DB2024★ 1 cited
Output-Sensitive Evaluation of Regular Path Queries
Mahmoud Abo Khamis, Ahmet Kara, Dan Olteanu +1
We study the classical evaluation problem for regular path queries: Given an edge-labeled graph and a regular path query, compute the set of pairs of vertices that are connected by…
cs.DB2024
Pessimistic Cardinality Estimation
Mahmoud Abo Khamis, Kyle Deeds, Dan Olteanu +1
Cardinality Estimation is to estimate the size of the output of a query without computing it, by using only statistics on the input relations. Existing estimators try to return an…