Caterpillar-based homomorphism counts yield pessimistic join size estimates that overestimate by roughly m to the power 3/5 in simulations, improving on prior star and bi-star exponents.
Pessimistic Cardinality Estima- tion: Tighter Upper Bounds for Intermediate Join Cardinalities,
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Sidorenko-Inspired Pessimistic Estimation
Caterpillar-based homomorphism counts yield pessimistic join size estimates that overestimate by roughly m to the power 3/5 in simulations, improving on prior star and bi-star exponents.