Zobrazeno 1 - 10
of 14 111
pro vyhledávání: '"Riveros, A."'
We study the problem of evaluating a Monadic Second Order (MSO) query over strings under updates in the setting of direct access. We present an algorithm that, given an MSO query with first-order free variables represented by an unambiguous variable-
Externí odkaz:
http://arxiv.org/abs/2409.17329
In optimal transport, quadratic regularization is a sparse alternative to entropic regularization: the solution measure tends to have small support. Computational experience suggests that the support decreases monotonically to the unregularized count
Externí odkaz:
http://arxiv.org/abs/2408.07871
The set of answers to a query may be very large, potentially overwhelming users when presented with the entire set. In such cases, presenting only a small subset of the answers to the user may be preferable. A natural requirement for this subset is t
Externí odkaz:
http://arxiv.org/abs/2408.01657
Autor:
Pinto, Dante, Riveros, Cristian
Hierarchical conjunctive queries (HCQ) are a subclass of conjunctive queries (CQ) with robust algorithmic properties. Among others, Berkholz, Keppeler, and Schweikardt have shown that HCQ is the subclass of CQ (without projection) that admits dynamic
Externí odkaz:
http://arxiv.org/abs/2408.01652
We revisit the quantum-mechanical two-dimensional harmonic oscillator with an electric field confined to a circular box of impenetrable walls. In order to obtain the energy spectrum we resort to the Rayleigh-Ritz method with polynomial and Gaussian b
Externí odkaz:
http://arxiv.org/abs/2408.01593
Autor:
Castro, I., Riveros, A., Palma, J. L., Abelmann, L., Tomasello, R., Rodrigues, D. R., Giordano, A., Finocchio, G., Gallardo, R., Vidal-Silva, N.
In this work, we explored theoretically the spatial resolution of magnetic solitons and the variations of their sizes when subjected to a Magnetic Force Microscopy (MFM) measurement. Next to tip-sample separation, we considered reversal in the magnet
Externí odkaz:
http://arxiv.org/abs/2406.04007
We present an index structure, called the color-index, to boost the evaluation of acyclic conjunctive queries (ACQs) over binary schemas. The color-index is based on the color refinement algorithm, a widely used subroutine for graph isomorphism testi
Externí odkaz:
http://arxiv.org/abs/2405.12358
We present a theoretical framework for the extraction and transformation of text documents. We propose to use a two-phase process where the first phase extracts span-tuples from a document, and the second phase maps the content of the span-tuples int
Externí odkaz:
http://arxiv.org/abs/2405.12350
Autor:
Riveros, Enrique, Vairetti, Carla, Wegmann, Christian, Truffa, Santiago, Maldonado, Sebastián
This paper aims to enrich the capabilities of existing deep learning-based automated valuation models through an efficient graph representation of peer dependencies, thus capturing intricate spatial relationships. In particular, we develop two novel
Externí odkaz:
http://arxiv.org/abs/2405.06553
Publikováno v:
Phys. Rev. Lett. 133, 080202 (2024)
We present an exact ansatz for the eigenstate problem of mixed fermion-boson systems that can be implemented on quantum devices. Based on a generalization of the electronic contracted Schr\"odinger equation (CSE), our approach guides a trial wave fun
Externí odkaz:
http://arxiv.org/abs/2402.12273