BibSonomy publications for /author/WeltySun Feb 05 17:29:37 CET 2012AI Magazine359-79Building Watson: An Overview of the DeepQA Project.312010ai answering dis ibm language natural nlp processing qa question watson Wed Jan 25 00:00:00 CET 2012ACM Trans. Database Syst.4626-649Human Factors Comparison of a Procedural and a Nonprocedural Query Language.61981dblp Thu Nov 17 16:39:52 CET 2011cite arxiv:1111.3674Comment: 67 pages; 18 figures; aastex; accepted to ApJ; higher quality figures (1, 2, 9, 18) are available at http://astro.uchicago.edu/~dwelty/MCHIInterstellar H I and H_2 in the Magellanic Clouds: An Expanded Sample Based on UV Absorption-Line Data2011H2 HI clouds ma magellanic We have determined column densities of H I and/or H_2 for sight lines in the Magellanic Clouds from archival HST and FUSE spectra of H I Lyman-alpha and H_2 Lyman-band absorption. Together with some similar data from the literature, we now have absorption-based N(H I) and/or N(H_2) for 285 LMC and SMC sight lines (114 with a detection or limit for both species) -- enabling more extensive, direct, and accurate determinations of molecular fractions, gas-to-dust ratios, and elemental depletions in these two nearby, low-metallicity galaxies. For sight lines where the N(H I) estimated from 21 cm emission is significantly higher than the value derived from Lyman-alpha absorption (presumably due to emission from gas beyond the target stars), integration of the 21 cm profile only over the velocity range seen in Na I or H_2 absorption generally yields much better agreement. Conversely, N(21 cm) can be lower than N(Ly-alpha) by factors of 2--3 in some LMC sight lines -- suggestive of small-scale structure within the 21 cm beam(s) and/or some saturation in the emission. The mean gas-to-dust ratios obtained from N(H_tot)/E(B-V) are larger than in our Galaxy, by factors of 2.8--2.9 in the LMC and 4.1--5.2 in the SMC -- i.e., factors similar to the differences in metallicity. The N(H_2)/E(B-V) ratios are more similar in the three galaxies, but with considerable scatter within each galaxy. These data may be used to test models of the atomic-to-molecular transition at low metallicities and predictions of N(H_2) based on comparisons of 21 cm emission and the IR emission from dust. Wed Oct 19 00:00:00 CEST 2011International Semantic Web Conference (2)conf/semweb/2011-2144-156Lecture Notes in Computer ScienceLeveraging Community-Built Knowledge for Type Coercion in Question Answering.70322011dblp Fri Sep 09 00:00:00 CEST 2011Applied Ontology1107-116Towards OntoClean 2.0: A framework for rigidity.12005dblp Tue Aug 09 16:33:51 CEST 2011GermanyHandbook on Ontologies8151-159An Overview of OntoClean2004ontology OntoClean is a methodology for validating the ontological adequacy of taxonomic relationships. It is based on highly general ontological notions drawn from philosophy, like essence, identity, and unity, which are used to characterize relevant aspects of the intended meaning of the properties, classes, and relations that make up an ontology. These aspects are represented by formal metaproperties, which impose several constraints on the taxonomic structure of an ontology. The analysis of these constraints helps in evaluating and validating the choices made. In this chapter we present an informal overview of the philosophical notions in- volved and their role in OntoClean, review some common ontological pitfalls, and walk through the example that has appeared in pieces in previous papers and has been the basis of numerous tutorials and talks.Tue Aug 09 16:33:51 CEST 2011New York, NY, USACommun. ACM261-65Evaluating ontological decisions with OntoClean452002imported Tue Aug 09 16:33:51 CEST 2011ECAI219-223ECAI 2000, Proceedings of the 14th European Conference on Artificial Intelligence, Berlin, Germany, August 20-25, 2000Identity, Unity, and Individuality: Towards a Formal Toolkit for Ontological Analysis2000imported Tue Aug 09 16:33:51 CEST 2011ER210-224Ontological Analysis of Taxonomic Relationships.2000dblp Tue Aug 09 16:33:51 CEST 2011Proceedings of the 12th European Workshop on Knowledge Acquisition, Modeling and Management97-112Lecture Notes in Computer ScienceA Formal Ontology of Properties2000imported A common problem of ontologies is that their taxonomic structure is often poor and confusing. This is typically exemplified by the unrestrained use of subsumption to accomplish a variety of tasks. In this paper we show how a formal ontology of unary properties can help using the subsumption relation in a disciplined way. This formal ontology is based on some meta-properties built around the fundamental philosophical notions of identity, unity, essence, and dependence. These meta-properties impose some constraints on the subsumption relation that clarify many misconceptions about taxonomies, facilitating their understanding, comparison and integration.Tue Aug 09 16:33:51 CEST 2011The Description Logic Handbook - Theory, Implementation and Applications2003description knowledge logic representation Tue Aug 09 16:33:51 CEST 2011Data and Knowledge Engineering51-74Supporting ontological analysis of taxonomic relationships392001Fri Aug 05 00:00:00 CEST 2011IGARSSconf/igarss/20072462-2464WaterNet the NASA water cycle solutions network.2007dblp Wed Jun 29 00:00:00 CEST 2011J. Log. Comput.3449-456Report on the 1998 International Workshop on Description Logics (DL'98).91999dblp Tue Jun 28 00:00:00 CEST 2011FLAIRS Conferenceconf/flairs/2011Using Part-Of Relations for Discovering Causality.2011dblp Mon Jun 27 00:00:00 CEST 2011International Journal of Man-Machine Studies6613-624Experimentation in Computer Science: An Empirical View.291988dblp Mon Jun 27 00:00:00 CEST 2011International Journal of Man-Machine Studies4463-477Correcting User Errors in SQL.221985dblp Tue Jun 21 00:00:00 CEST 2011ER210-224Ontological Analysis of Taxonomic Relationships.2000dblp Fri Jun 10 09:04:03 CEST 2011Austin, Texas, USAInvited panel at AAAI-99: The National Conference on Artificial IntelligenceOntology: Expert Systems All Over Again?1999imported Wed May 18 00:00:00 CEST 2011Autom. Softw. Eng.3259Editorial.51998dblp