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- Budker Institute of Nuclear PhysicsRU17 papers
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- Korea UniversityKR17 papers
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- Nagoya UniversityJP17 papers
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22 papers · 1 filter
Thematic Annotation: extracting concepts out of documents
Pierre Andrews, Martin Rajman
Contrarily to standard approaches to topic annotation, the technique used in this work does not centrally rely on some sort of -- possibly statistical -- keyword extraction. In fac…
Unbounded symmetric operators in -homology and the Baum-Connes Conjecture
Hela Bettaieb, Michel Matthey, Alain Valette
Using the unbounded picture of analytical K-homology, we associate a well-defined K-homology class to an unbounded symmetric operator satisfying certain mild technical conditions.…
A model structure a la Thomason on 2-Cat
K. Worytkiewicz, K. Hess, P. E. Parent +1
We exhibit a model structure on 2-Cat, obtained by transfer from sSet across the adjunction C_2 o Sd^2 -| Ex^2 o N_2.
A knowledge-based approach to semi-automatic annotation of multimedia documents via user adaptation
Afzal Ballim, Nastaran Fatemi, Hatem Ghorbel +1
Current approaches to the annotation process focus on annotation schemas, languages for annotation, or are very application driven. In this paper it is proposed that a more flexibl…
Enhancement of the Binding Energy of Charged Excitons in Disordered Quantum Wires
T. Otterburg, D. Y. Oberli, M. -A. Dupertuis +5
Negatively and positively charged excitons are identified in the spatially-resolved photoluminescence spectra of quantum wires. We demonstrate that charged excitons are weakly loca…
Quantum dimer model with Z_2 liquid ground-state: interpolation between cylinder and disk topologies and toy model for a topological quantum-bit
Gregoire Misguich, Vincent Pasquier, Frederic Mila +1
We consider a quantum dimer model (QDM) on the kagome lattice which was introduced recently [Phys. Rev. Lett. 89, 137202 (2002)]. It realizes a Z_2 liquid phase and its spectrum wa…