Relevance of Negative Links in Graph Partitioning: A Case Study Using Votes From the European Parliament

Autor:	Mendonça, Israel, Figueiredo, Rosa, Labatut, Vincent, Michelon, Philippe
Rok vydání:	2015
Předmět:	Computer Science - Social and Information Networks Computer Science - Robotics Mathematics - Optimization and Control Physics - Physics and Society
Druh dokumentu:	Working Paper
DOI:	10.1109/ENIC.2015.25
Popis:	In this paper, we want to study the informative value of negative links in signed complex networks. For this purpose, we extract and analyze a collection of signed networks representing voting sessions of the European Parliament (EP). We first process some data collected by the VoteWatch Europe Website for the whole 7 th term (2009-2014), by considering voting similarities between Members of the EP to define weighted signed links. We then apply a selection of community detection algorithms, designed to process only positive links, to these data. We also apply Parallel Iterative Local Search (Parallel ILS), an algorithm recently proposed to identify balanced partitions in signed networks. Our results show that, contrary to the conclusions of a previous study focusing on other data, the partitions detected by ignoring or considering the negative links are indeed remarkably different for these networks. The relevance of negative links for graph partitioning therefore is an open question which should be further explored. Comment: in 2nd European Network Intelligence Conference (ENIC), Sep 2015, Karlskrona, Sweden
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1507.04215 Zobrazit plný text záznamu View this record from Arxiv