1,726,461 research outputs found
Collectionneur et connaisseur : Giuseppe De Vito et la nature morte napolitaine
No full textIl testo presenta una revisione critica dei principali interventi sulla natura morta napoletana di Giuseppe De Vito
Geometrical and computational aspects of Spectral Support Estimation for novelty detection
No full textIn this paper we discuss the Spectral Support Estimation algorithm (De Vito et al., 2010) by analyzing its 27 geometrical and computational properties. The estimator is non-parametric and the model selection 28 depends on three parameters whose role is clarified by simulations on a two-dimensional space. The performance of the algorithm for novelty detection is tested and compared with its main competitors on a 30 collection of real benchmark datasets of different sizes and types
Geometric classification of semidirect products in the maximal parabolic subgroup of Sp (2,R)
No full textWe classify up to conjugation by GL(2,R) (more precisely, block diagonal symplectic matrices) all the semidirect products inside the maximal parabolic of Sp(2,R) by means of an essentially geometric argument. This classification has already been established in [G. S. Alberti, L. Balletti, F. De Mari and E. De Vito, Reproducing subgroups of Sp(2,R). Part I: Algebraic classification, J. Fourier Anal. Appl. 9(4) (2013) 651-682] without geometry, under a stricter notion of equivalence, namely, conjugation by arbitrary symplectic matrices. The present approach might be useful in higher dimensions and provides some insight
Complete Conditional Type Structures (Extended Abstract)
No full textHierarchies of conditional beliefs (Battigalli and Siniscalchi 1999) play a central role for the epistemic analysis of solution concepts in sequential games. They are practically modelled by type structures, which allow the analyst to represent the players' hierarchies without specifying an infinite sequence of conditional beliefs. Here, we study type structures that satisfy a "richness" property, called completeness. This property is defined on the type structure alone, without explicit reference to hierarchies of beliefs or other type structures. We provide sufficient conditions under which a complete type structure represents all hierarchies of conditional beliefs. In particular, we present an extension of the main result in Friedenberg (2010) to type structures with conditional beliefs
Where Do LCT and NYF Pegmatites Fit In? A Contribution to a Revised Classification of Granitic Pegmatites
No full textOral presentation
Communicating author: RF Marti
Benefits of a Classification Scheme of Granitic Pegmatites Based on Petrogenetic Considerations.
No full textOral presentation-
Communicating author: Martin RF
WHY IS AMAZONITIC K-FELDSPAR AN EARMARK OF NYF-TYPE GRANITIC PEGMATITES?
No full textOral presentation- Communicating author: Martin R
Complete conditional type structures
No full textHierarchies of conditional beliefs (Battigalli and Siniscalchi, 1999) play a central role for the epistemic analysis of solution concepts in sequential games. They are modelled by type structures, which allow the analyst to represent the players' hierarchies without specifying an infinite sequence of conditional beliefs. Here, we study type structures that satisfy a "richness" property, called completeness. Friedenberg (2010) shows that, under specific conditions, a complete type structure with ordinary beliefs represents all hierarchies. This paper shows that Friedenberg's result can be extended to type structures with conditional beliefs. As an ancillary result of independent interest, we provide a construction of the "canonical" space of hierarchies of conditional beliefs which generalizes the one in Battigalli and Siniscalchi (1999)
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