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Limit distributions of upper order statistics for families of multivariate distributions

Wüthrich, Mario

In: Extremes, 2005, vol. 8, no. 4, p. 339-344

User participation and community formation in peer production systems

Ciampaglia, Giovanni Luca ; Gambardella, Luca (Dir.) ; Giordano, Paolo (Codir.) ; Vancheri, Alberto (Codir.)

Thèse de doctorat : Università della Svizzera italiana, 2011 ; 2011INFO010.

This thesis explores the phenomenon of user participation in peer production communities. In large-scale collaboration communities such as wikis, open source software development teams, and file-sharing groups, members are, in general, not remunerated for contributing to the digital common, so the incentives to participate in these projects are usually construed in terms of extrinsic benefits...

Bayesian analysis for mixtures of autoregressive components with application to financial market volatility

Sampietro, Stefano ; Arbia, Giuseppe (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2004 ; 2004ECO004.

This thesis presents a Bayesian analysis of a non-linear time series model. In particular, we deal with a mixture of normal distributions whose means are linear functions of the past values of the observed variable. Since the component densities of the mixture can be viewed as the conditional distributions of different Gaussian autoregressive models, the model is referred as mixture of...