Author

Gabriel Carmona

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Jul 2026

Extended Depth-First Representations of k2-trees

It is demonstrated that depth-first layouts of $k^2$-trees provide a practical and efficient alternative to traditional layouts, improving both compression and computational performance in matrix operations.

Gabriel Carmona, P. Ferragina, Giovanni Manzini et al. · arXiv.org · 0 citations

Speeding up Qdags with Generalized Hypertree Decompositions

This paper combines Qdags with a Generalized Hypertree Decomposition of the query, into subqueries with fewer variables, and implements algorithms that find the optimal GHD according to the AGM bounds of the subqueries and the specificities of the Qdag cost model.

Diego Arroyuelo, Gabriel Carmona, Gonzalo Navarro et al. · 0 citations