Optimal sparsification for some binary CSPs using low-degree polynomials

BMP Jansen, A Pieterse - ACM Transactions on Computation Theory …, 2019 - dl.acm.org
This article analyzes to what extent it is possible to efficiently reduce the number of clauses
in NP-hard satisfiability problems without changing the answer. Upper and lower bounds are …

Redundancy Is All You Need

J Brakensiek, V Guruswami - arXiv preprint arXiv:2411.03451, 2024 - arxiv.org
The seminal work of Bencz\'ur and Karger demonstrated cut sparsifiers of near-linear size,
with several applications throughout theoretical computer science. Subsequent extensions …

Best-case and worst-case sparsifiability of Boolean CSPs

H Chen, BMP Jansen, A Pieterse - arXiv preprint arXiv:1809.06171, 2018 - arxiv.org
We continue the investigation of polynomial-time sparsification for NP-complete Boolean
Constraint Satisfaction Problems (CSPs). The goal in sparsification is to reduce the number …

Sparsification Lower Bounds for List H-Coloring

H Chen, BMP Jansen, K Okrasa, A Pieterse… - ACM Transactions on …, 2023 - dl.acm.org
We investigate the List h-Coloring problem, the generalization of graph coloring that asks
whether an input graph G admits a homomorphism to the undirected graph H (possibly with …

Why are CSPs based on partition schemes computationally hard?

P Jonsson, V Lagerkvist - 43rd International Symposium on …, 2018 - drops.dagstuhl.de
Many computational problems arising in, for instance, artificial intelligence can be realized
as infinite-domain constraint satisfaction problems (CSPs) based on partition schemes: a set …

On redundancy in constraint satisfaction problems

C Carbonnel - 28th International Conference on Principles and …, 2022 - drops.dagstuhl.de
A constraint language Γ has non-redundancy f (n) if every instance of CSP (Γ) with n
variables contains at most f (n) non-redundant constraints. If Γ has maximum arity r then it …

Best-case and worst-case sparsifiability of Boolean csps

H Chen, BMP Jansen, A Pieterse - Algorithmica, 2020 - Springer
We continue the investigation of polynomial-time sparsification for NP-complete Boolean
Constraint Satisfaction Problems (CSPs). The goal in sparsification is to reduce the number …

Which NP-hard SAT and CSP problems admit exponentially improved algorithms?

V Lagerkvist, M Wahlström - arXiv preprint arXiv:1801.09488, 2018 - arxiv.org
We study the complexity of SAT ($\Gamma $) problems for potentially infinite languages
$\Gamma $ closed under variable negation (sign-symmetric languages). Via an algebraic …

Chain length and csps learnable with few queries

C Bessiere, C ément Carbonnel, G Katsirelos - Proceedings of the AAAI …, 2020 - aaai.org
The goal of constraint acquisition is to learn exactly a constraint network given access to an
oracle that answers truthfully certain types of queries. In this paper we focus on partial …

Optimal polynomial-time compression for Boolean Max CSP

BMP Jansen, M Włodarczyk - ACM Transactions on Computation Theory, 2024 - dl.acm.org
In the Boolean maximum constraint satisfaction problem—Max cspγ—one is given a
collection of weighted applications of constraints from a finite constraint language Γ, over a …