Hypernode Graphs for Spectral Learning on Binary Relations over Sets

Thomas Ricatte; Rémi Gilleron; Marc Tommasi

Hypernode Graphs for Spectral Learning on Binary Relations over Sets

Thomas Ricatte ¹ Rémi Gilleron ^{1, 2} Marc Tommasi ^{1, 2}

1 MAGNET - Machine Learning in Information Networks

LIFL - Laboratoire d'Informatique Fondamentale de Lille, Inria Lille - Nord Europe

2 LIFL - Laboratoire d'Informatique Fondamentale de Lille

Abstract : We introduce hypernode graphs as weighted binary relations between sets of nodes: a hypernode is a set of nodes, a hyperedge is a pair of hypernodes, and each node in a hypernode of a hyperedge is given a non negative weight that represents the node contribution to the relation. Hypernode graphs model binary relations between sets of individuals while allowing to reason at the level of individuals. We present a spectral theory for hypernode graphs that allows us to introduce an unnormalized Laplacian and a smoothness semi-norm. In this framework, we are able to extend spectral graph learning algorithms to the case of hypernode graphs. We show that hypernode graphs are a proper extension of graphs from the expressive power point of view and from the spectral analysis point of view. Therefore hypernode graphs allow to model higher order relations whereas it is not true for hypergraphs as shown in~\cite{Agarwal2006}. In order to prove the potential of the model, we represent multiple players games with hypernode graphs and introduce a novel method to infer skill ratings from game outcomes. We show that spectral learning algorithms over hypernode graphs obtain competitive results with skill ratings specialized algorithms such as Elo duelling and TrueSkill.

Keywords : Graphs Hypergraphs Semi-supervised Learning Multiple Players Games

Document type :

Conference papers

Domain :

Computer Science [cs] / Artificial Intelligence [cs.AI]

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https://hal.inria.fr/hal-01017025
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Submitted on : Tuesday, July 1, 2014 - 4:17:59 PM
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