A one-shot domain-independent robust multimedia clustering methodology based on hybrid multimodal fusion

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The existence of multiple modalities poses a challenge to the design of multimedia data clustering systems, as the unsupervised nature of the problem makes it very difficult to determine a priori whether a single modality should dominate the clustering process, or if modalities should be combined somehow. In order to fight against these indeterminacies—which come on top of those referring to the selection of the optimal clustering algorithm and data representation for the problem at hand–, this work introduces robust multimedia clustering, a one-shot methodology for domain independent multimedia data clustering based on hybrid multimodal fusion. By means of experimentation, we firstly justify the motivation of the proposed methodology by proving the relevance of multimedia clustering indeterminacies. Subsequently, a specific multimedia clustering system based on the requirements of the methodology is implemented and evaluated on three multimedia clustering applications—music genres, photographic topics and audio-visual objects classification—as a proof of concept, analyzing the quality of the obtained partitions and the time complexity of the proposal. The experimental results reveal that the implemented system, which includes a self-refining consensus clustering procedure for attaining high levels of robustness, allows to obtain, in a fully unsupervised manner, better quality partitions than 93 % of the clusterers available in our experiments, being even able to improve the quality of the best ones and outperforming state-of-the-art alternatives.

Idioma originalAnglès
Pàgines (de-a)1507-1543
Nombre de pàgines37
RevistaMultimedia Tools and Applications
Volum73
Número3
DOIs
Estat de la publicacióPublicada - 29 d’oct. 2014

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