Low-rank approximations for predicting voting behaviour

نویسندگان

  • Aldo Porco
  • Vicenç Gómez
  • Anders Jonsson
  • Andreas Kaltenbrunner
چکیده

Online voting networks, the ones where users can give a positive or negative evaluation (as friend or foe respectively) to their peers, have caught the eye of the Data Mining community. Researchers have come up with some ideas on how to predict their behavior based on ad hoc features, mainly calculated by aggregation of their local vecinity data. We introduce a novel approach for predicting social networks behavior by modeling the tasks as a model based recommender system problem. Both formulations are very simmilar. Recommender Systems deals with records of users ratings for products, while voting networks consits of evaluations given by users for one another. The former has a broad body of literature that deals with many problems found in social networks, such as: the curse of dimensionality, sparsity and cold start. Moreover, its development has been heavily pushed producing very robust and sound models. We show that our method achieves similar or better performance than current state of the art methods for the Link Prediction and Polarity Prediction tasks. Finally we further extend our approach to include nodes and edges attributes, other than the basic graph structure, as sample features.

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تاریخ انتشار 2015