Tze-Meng Low, Daniele G. Spampinato, A. Kutuluru, U. Sridhar, Thom Popovici, Franz Franchetti and S. McMillan (Proc. High Performance Extreme Computing (HPEC), 2018)
Linear Algebraic Formulation of Edge-centric K-truss Algorithms with Adjacency Matrices
Comment: MIT GraphChallenge Finalist
Preprint (501 KB)
Published paper (link to publisher)

Edge-centric algorithms using the linear algebraic approach typically require the use of both the incidence and adjacency matrices. Due to the two different data formats, the information contained in the graph is replicated, thereby incurring both time and space for the replication. Using K-truss as an example, we demonstrate that an edge-centric K-truss algorithm, the Eager K-truss algorithm, can be identified from a linear algebraic formulation using only the adjacency matrix. In addition, we demonstrate that our implementation of the linear algebraic edge-centric K-truss algorithm out-performs a Galois’ K-truss implementation by an average (over 53 graphs) of more than 13 times, and up to 71 times.

Graph-algorithms, Algorithm, High performance, Algebraic, Linear algebra, K-truss, Edge-centric, Graphs