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20 results for “hypergraph”

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cs.AREmpiricalRecentJun 30, 2026

HySpecPro: Scalable Hypergraph Partitioning via Spectral Projection Optimization

Rongjian Liang, Zhuo Feng, Haoxing Ren

This paper introduces HySpecPro, a single-level hypergraph partitioner that performs end-to-end optimization in a spectral embedding space, delivering cut quality comparable to multilevel methods with…

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cs.DMTheoreticalRecentJul 8, 2026

Canonical Join Trees

Arne Leitert

This paper characterizes acyclic hypergraphs according to whether they admit unique canonical join trees as root and provides a linear-time algorithm to construct them.

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math.COcs.DMTheoreticalRecentJul 18, 2026

Linear Turán Numbers of Uniform Hypertrees

Rajat Adak, Pragya Verma

This paper determines the linear Tur'an numbers for higher uniformity $r$-uniform linear hypergraphs and studies specific cases such as stars, hypertrees, and paths.

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cs.ITNEWTheoreticalJul 29, 2026

Polynomially Improved Lower Bounds for Trifferent Codes via Locally Sparse $3$-Uniform Hypergraphs

Xuejiao Han, Yubo Sun, Gennian Ge

This paper improves the lower bound on the maximum size of trifferent codes using a locally sparse hypergraph and the Verstraete-Wilson theorem.

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cs.IRcs.AIcs.HCEmpiricalRecentJul 20, 2026

HyCoRec: Hypergraph-Enhanced Multi-Preference Learning for Alleviating Matthew Effect in Conversational Recommendation

Yongsen Zheng, Ruilin Xu, Ziliang Chen, Guohua Wang +3 more

This paper proposes HyCoRec, a method to alleviate the Matthew effect in conversational recommendation by learning multi-aspect preferences.

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cs.CCTheoreticalRecentJul 20, 2026

Faster Algorithms for Deciding the Unbiased Maker-Breaker Triangle Game on General Graphs

Julian Christoph Brinkmann, Anand Srivastav

This paper presents new polynomial-time algorithms for determining the winner of the unbiased triangle game on the edge set of general graphs using the edge-triangle incidence graph.

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cs.DMmath.PRTheoreticalRecentJul 26, 2026

Stability in stochastic hypergraph matching I: necessary and sufficient criteria

Doan Dai Nguyen, Ana Bušić

This paper introduces online assignment policies for stochastic matching on hypergraphs, which are maximally stable and allow for the derivation of necessary and sufficient stability criteria.

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math.COcs.ITTheoreticalRecentJul 15, 2026

Independent Sets in Multiset Profile Graphs via Weighted Local Covers

Aryeh Lev Zabokritskiy

This paper studies the maximum size of an independent set in the discrete simplex graph and provides new bounds using translated smaller graphs and finite rational linear systems.

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math.COcs.DMTheoreticalRecentJul 7, 2026

Coloring t-perfect graphs with fewer colors

Matija Novaković, Stefan Weltge

The authors improve the bound on the chromatic number of t-perfect graphs from 199053 to 186 by refining the proof of Chudnovsky et al.

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cs.CRcs.AIcs.CVRecentApr 7, 2026

Harnessing Hyperbolic Geometry for Harmful Prompt Detection and Sanitization

Igor Maljkovic, Maria Rosaria Briglia, Iacopo Masi, Antonio Emanuele Cinà +1 more

The paper introduces a robust, two-part framework (HyPE and HyPS) using hyperbolic geometry to efficiently detect and sanitize malicious prompts targeting Vision-Language Models (VLMs).

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cs.DMmath.COTheoreticalRecentJul 3, 2026

The disjoint separators problem in graphs

Thomas Delépine, Florian Galliot, Yannick Mogge, Leandro Montero +1 more

This paper studies the NP-completeness and provides a polynomial-time algorithm for the disjoint separators problem in planar graphs when all sizes are equal to one.

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cs.DScs.DMmath.COTheoreticalRecentJul 20, 2026

Faster and simpler traversal of 0/1-polytopes

Jiří Fink, Petr Hladík, Arturo Merino, Ondřej Mička +1 more

The paper simplifies and speeds up an algorithm for computing a Hamilton path on the skeleton of a 0/1-polytope by removing the log n factor, leading to improved algorithms for various problems.

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cs.NITheoreticalRecentJul 21, 2026

Online Stochastic Matchings: Stability on Hypergraphs

Fabien Mathieu

This paper characterizes stabilizability of stochastic dynamic matching on hypergraphs using the arrival rates and incidence matrix, and proposes a stabilizing policy.

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cs.DScs.CCTheoreticalRecentJun 11, 2026

Sketching Intersection Profiles: A Simple Proof and Three Applications

Flavio Chierichetti, Mirko Giacchini, Ravi Kumar, Alessandro Panconesi +2 more

This paper settles the complexity of three sketching problems in graphs and distributions.

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cs.DSmath.PRTheoreticalRecentJul 24, 2026

HyperLogLog for probabilists

Lucas Gerin

This paper provides non-asymptotic and explicit estimates for the exponential deviation inequalities of the HyperLogLog estimator.

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cs.HCEmpiricalRecentJul 15, 2026

ZipLine: Visual Analysis of Multivariate Graphs with Predicate Logic

Sjoerd Vink, Suyang Li, Brian Montambault, Michael Behrisch +2 more

This paper introduces ZipLine, a system for integrative analysis of multivariate graphs through a unified predicate language and learning algorithm.

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cs.DSTheoreticalRecentJun 16, 2026

Exact Algorithms for Edge Deletion to Cactus Graphs and Weighted Variants

Wenhao Song

This paper improves the time complexity of exact algorithms for converting a connected graph into a cactus by reducing it from O*(3^n) to O*(2^n) for unweighted graphs, and provides faster algorithms…

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