BibSonomy publications for /author/SpiliopoulosTue Feb 07 00:00:00 CET 2012Multiscale Modeling & Simulation11-27Importance Sampling for Multiscale Diffusions.102012dblp Mon Dec 12 19:01:32 CET 2011\url{http://ceur-ws.org}Proceedings of the 4th International Workshop on Ontology Matching (OM-2009)October{Results of the Ontology Alignment Evaluation Initiative 2009}5512009OAEI Ontology matching consists of finding correspondences between ontology entities. OAEI campaigns aim at comparing ontology matching systems on precisely defined test cases. Test cases can use ontologies of different nature (from expressive OWL ontologies to simple directories) and use different modalities, e.g., blind evaluation, open evaluation, consensus. OAEI-2009 builds over previous campaigns by having 5 tracks with 11 test cases followed by 16 participants. This paper is an overall presentation of the OAEI 2009 campaign.Mon Dec 05 00:00:00 CET 2011CoRRImportance Sampling for Multiscale Diffusionsabs/1107.54482011dblp Thu Nov 24 00:00:00 CET 2011Web Intelligenceconf/webi/2007457-460Mapping Ontologies Elements using Features in a Latent Space.2007dblp Fri Nov 04 00:00:00 CET 2011Computers & Geosciences3320-330A multigrid method for the estimation of geometric anisotropy in environmental data from sensor networks.372011dblp Thu Jun 23 19:37:15 CEST 2011Journal of Polymer Science Part B: Polymer Physics3524--533Photophysics, electrochemical properties, and electroluminescence of poly(p-phenylenevinylene) derivatives with 1,3,5-triphenylbenzene or 2,4,6-triphenylpyridine segments along the backbone442006diplom fluoreszenz Abstract The steady-state and time-resolved photoluminescence (PL), electrochemical behavior, and electroluminescence (EL) of didodecyloxy poly(p-phenylenevinylene)-based polymers that contained along the backbone structure 1,3,5-triphenylbenzene (PC) or 2,4,6-triphenylpyridine (PN) were studied. An intensive green PL broad-band emission with maxima at 516 and 527 nm was observed from thin films of PC and PN polymers, respectively, redshifted in comparison with the PL emission spectra measured in tetrahydrofuran solutions. The PL decay dynamics revealed the existence of more than one excited species, and the decay curves were best described by three-term exponential functions with a dominant lifetime of about 1 ns. The results of time-resolved PL and steady-state PL studies indicated excimer or aggregate formation. Both polymers oxidized irreversibly. A quasireversible reduction was observed in the PN polymer, whereas the PC polymer reduced irreversibly. For PC, slightly higher values of the ionization potential (EIP) and electron affinity (EA) were found (EIP = 5.52 eV, EA = 2.85 eV) than those for PN (EIP = 5.37 eV, EA = 2.77 eV). Light-emitting devices with indium tin oxide hole-injecting and aluminum electron-injecting electrodes were prepared and studied. They emitted green light, and their EL spectra were similar to those of PL thin films. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 44: 524–533, 2006Thu Jun 09 00:00:00 CEST 2011ICSconf/ics/2011373Poster: DVFS management in real-processors.2011dblp Wed Jul 21 15:57:22 CEST 2010Conf. Computing Frontiersconf/cf/2010287-296Interval-based models for run-time DVFS orchestration in superscalar processors.2010dblp Wed Jul 21 15:48:29 CEST 2010J. Web Sem.169-88On the discovery of subsumption relations for the alignment of ontologies.82010dblp Tue Jan 19 11:41:42 CET 2010Proc. 4th ISWC workshop on ontology matching (OM), Chantilly (VA US)73-126Results of the Ontology Alignment Evaluation Initiative 20092009kpat matching ontology pattern Fri Jan 15 00:00:00 CET 2010OMconf/semweb/2009omCEUR Workshop ProceedingsResults of the Ontology Alignment Evaluation Initiative 2009.5512008dblp Tue Dec 22 00:00:00 CET 2009Int. J. Semantic Web Inf. Syst.11-19Semantic Web Services and Mobile Agents Integration for Efficient Mobile Services.42008dblp Tue Dec 22 00:00:00 CET 2009SASO Workshopsconf/saso/2008w55-60A Case Based Reasoning Framework for Service Selection and Adaptation in Mobile Networks.2008dblp Wed Sep 09 00:00:00 CEST 2009IJMSO295-108Semantic retrieval and ranking of Semantic Web documents using free-form queries.32008dblp Sun Feb 15 00:00:00 CET 2009OMconf/semweb/2007omCEUR Workshop ProceedingsLearning Subsumption Relations with CSR: a Classification based Method for the Alignment of Ontologies.3042007dblp Sun Feb 15 00:00:00 CET 2009OMconf/semweb/2007omCEUR Workshop ProceedingsSEMA: Results for the Ontology Alignment Contest OAEI 2007.3042007dblp Tue Nov 11 12:04:42 CET 2008CSR: Discovering Subsumption Relations for the Alignment of Ontologies2008Ontology_Matching_DL_CP_PP WT08 alignment discovering ontology Wed May 28 14:49:55 CEST 2008Berlin, HeidelbergProceedings of the 5th European Semantic Web ConferenceJuneLNCSCSR: Discovering Subsumption Relations for the Alignment of Ontologies2008classification supervised machine learning subsumption alignment ontology binary ontology-alignment For the effective alignment of ontologies, the computation of equivalence relations between elements of ontologies is not enough: Subsumption relations play a crucial role as well. In this paper we propose the "Classification-Based Learning of Subsumption Relations for the Alignment of Ontologies" (CSR) method. Given a pair of concepts from two ontologies, the objective of CSR is to identify patterns of concepts' features that provide evidence for the subsumption relation among them. This is achieved by means of a classification task, using state of the art supervised machine learning methods. For the learning of the classifiers, CSR generates training datasets from the source ontologies', considering each ontology in isolation: This allows the method to tune itself to the idiosyncrasies of each of the source ontologies. The paper describes thoroughly the method, provides experimental results over an extended version of benchmarking series and discusses the potential of the method.Tue May 27 00:00:00 CEST 2008ESWCconf/esws/2008418-431Lecture Notes in Computer ScienceCSR: Discovering Subsumption Relations for the Alignment of Ontologies.50212008dblp Wed Nov 07 19:19:06 CET 2007Proceedings of the Workshop on Ontology Matching (OM2007) at ISWC/ASWC2007, Busan, South Koreahttp://data.semanticweb.org/workshop/om/2007/proceedingsNovemberLearning Subsumption Relations with CSR: A Classification-based Method for the Alignment of Ontologies20072007 alignment iswc learning method ontology relations subsumption workshop_om In this paper we propose the "Classification-Based Learning of Subsumption Relations for the Alignment of Ontologies" (CSR) method. Given a pair of concepts from two ontologies, the objective of CSR is to identify patterns of concepts’ features (here, properties) that provide evidence for the subsumption relation among these concepts. This is achieved by means of a classification task using decision trees. For the learning of the decision trees, the proposed method generates training datasets from the source ontologies’, considering each ontology in isolation. The paper describes thoroughly the method, provides experimental results for computing subsumption relations over an extended version of the OAEI 2006 benchmarking series and discusses the potential of the method.