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20 results for “Directed Acyclic Graph (DAG)”

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cs.DScs.CCTheoreticalRecentJun 16, 2026

Directed Reachability-Preserving Minimum Edge Cut: Approximation and Planar Hardness

Qi Duan

This paper presents approximation algorithms for the one-way directed Reachability-Preserving Minimum Edge Cut problem in directed graphs.

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cs.DSmath.COTheoreticalRecentJul 28, 2026

Optimization of the directed spanning trees using the weighted matroid intersection algorithm

Binhong Jiang, Gehao Wang

The paper presents an algorithm for updating a Directed Minimum Spanning Tree using the weighted matroid intersection algorithm and a dynamic auxiliary graph.

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cs.DScs.CCcs.DMTheoreticalRecentJun 26, 2026

Maximum Cut Algorithms and Upper Bounds for Planar and Toroidal Graphs

Mark Glass, Meir Feder

The authors map the problem of finding the maximum cut of a planar graph with arbitrary weights to a minimum T-join problem in the absolute dual graph, enabling the use of shortest paths and adapting…

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cs.DCcs.DSEmpiricalRecentJul 22, 2026

Fully Dynamic Rooted Spanning Tree on GPU

Abhijeet Sahu, Harmit Singh, Soham Nandy, G. Ramakrishna

This paper presents four novel parallel algorithms for maintaining a rooted spanning forest in dynamic graphs, achieving a throughput of 2 million insertions and 1.4 million deletions per second.

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cs.NIEmpiricalRecentJul 27, 2026

Methods for Path Set Attribute Calculation in Network Systems

Giovanni Fiaschi, Carlo Vitucci, Thomas Westerbäck, Daniel Sundmark +1 more

This paper presents an optimized algorithm for computing cut sets of a path set in graph theory and introduces a vectorized computational framework for property calculations.

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cs.AIEmpiricalRecentJun 30, 2026

AxDafny: Agentic Verified Code Generation in Dafny

Benjamin Breen, Austin Letson, Borja Requena Pozo, Leopoldo Sarra

The paper introduces AxDafny, a verifier-guided repair framework that improves verification success in Dafny by generating implementations, invariants, assertions, and termination arguments.

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math.COcs.DMTheoreticalRecentJun 25, 2026

Totally Disjoint Diametral Paths

Tınaz Ekim, Arthur Farley

This paper studies the problem of finding totally disjoint diametral paths in simple connected graphs and provides algorithms for certain classes of graphs.

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cs.CCTheoreticalRecentJul 21, 2026

On the Complexity of Graph Edit Distance in Restricted Graph Classes

Maximilian Limmer, Nils M. Kriege

The paper investigates the relationship between graph classes, edit cost functions, and computational complexity of the graph edit distance, providing polynomial-time reductions and correspondences.

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math.COcs.DMEmpiricalRecentJul 7, 2026

Symmetric lexicographic symmetric-subset reverse search for the enumeration of circuits, cocircuits, and triangulations up to symmetry

Jörg Rambau

This paper introduces and implements variants of the symmetric lexicographic symmetric-subset reverse search framework for enumerating symmetric feasible subsets of a finite set, applying it to cocirc…

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cs.DBcs.CRRecentMar 20, 2026

Acyclic Graph Pattern Counting under Local Differential Privacy

Yihua Hu, Kuncan Wang, Wei Dong

The paper presents the first general mechanism for counting arbitrary acyclic graph patterns under Local Differential Privacy (LDP), addressing challenges in pattern construction and node duplication.

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cs.CCcs.DMTheoreticalRecentJul 10, 2026

Closing the Complexity Gap for Exact Domatic Number at Three and Four

Holger Spakowski

This paper proves DP-completeness of Exact-3-DNP and Exact-4-DNP by reducing 3SAT to these problems.

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cs.DScs.DMTheoreticalRecentJun 29, 2026

Algorithms and complexity for geodetic sets on interval and chordal graphs

Dibyayan Chakraborty, Sandip Das, Florent Foucaud, Harmender Gahlawat +1 more

This paper shows that finding the minimum geodetic set in chordal graphs is fixed parameter tractable, implying a polynomial-time algorithm for k-trees. It also proves that the problem is NP-hard on i…

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