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References

Authors

Francesc Alias

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Francesc Alias

Ph.D.

Personal Homepage:
http://www.salle.url.edu/~falias
Current place of employment:
Enginyeria i Arquitectura La Salle (Universitat Ramon Llull)

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Publications by Francesc Alias (bibliography)

» 2007 «

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Sevillano, Xavier, Alias, Francesc and Socoro, Joan Claudi (2007): BordaConsensus: a new consensus function for soft cluster ensembles. In: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval 2007. pp. 743-744. Available online

“Consensus clustering is the task of deriving a single labeling by applying a consensus function on a cluster ensemble. This work introduces BordaConsensus, a new consensus function for soft cluster ensembles based on the Borda voting scheme. In contrast to classic, hard consensus functions that operate on labelings, our proposal considers cluster membership information, thus being able to tackle multiclass clustering problems. Initial small scale experiments reveal that, compared to state-of-the-art consensus functions, BordaConsensus constitutes a good performance vs. complexity trade-off.”

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» 2006 «

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Sevillano, Xavier, Cobo, German, Alias, Francesc and Socoro, Joan Claudi (2006): Feature diversity in cluster ensembles for robust document clustering. In: Proceedings of the 29th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval 2006. pp. 697-698. Available online

“The performance of document clustering systems depends on employing optimal text representations, which are not only difficult to determine beforehand, but also may vary from one clustering problem to another. As a first step towards building robust document clusterers, a strategy based on feature diversity and cluster ensembles is presented in this work. Experiments conducted on a binary clustering problem show that our method is robust to near-optimal model order selection and able to detect constructive interactions between different document representations in the test bed.”

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