Abstract
Research on Multi-View Clustering (MVC) has become more and more attractive thanks to the richness of its application in several fields. Unlike traditional clustering, each view maintains different information to complete each other. On the other hand, the collaborative framework aims mainly to exchange knowledge between collaborators to improve their local quality. The purpose of this chapter is to present a new framework for Collaborative Multi-View Clustering (Co-MVC) based on Optimal Transport (OT) theory. The main idea of the proposed approaches is to perform a collaborative learning step to create a coordination map between multiple views that will ensure an optimal fusion for building a consensus solution. The intuition behind performing the collaboration step is to exploit the pre-existing structure learned in each view to improve the classical consensus clustering. In this chapter we propose two approaches: Collaborative Consensus Projection Approach (CoCP) that aims to perform the consensus in the global space of the data, and a Collaborative Consensus with New Representation (CoCNR) that seeks to encode a new data representation based on local ones. Both approaches are based on the entropy regularized Wasserstein distance and the Wasserstein barycenters between the data distribution in each view. Extensive experiments are conducted on multiple datasets to analyze and evaluate the proposed approaches.
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Ben-Bouazza, FE., Bennani, Y., El Hamri, M. (2022). An Optimal Transport Framework for Collaborative Multi-view Clustering. In: Pedrycz, W., Chen, SM. (eds) Recent Advancements in Multi-View Data Analytics. Studies in Big Data, vol 106. Springer, Cham. https://doi.org/10.1007/978-3-030-95239-6_5
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