Now showing items 344-363 of 1798

    • DeaLing with Ontologies using CODs 

      Del Vescovo C; Peñaloza R (CEUR, 2014)
      A major challenge in knowledge representation is to manage the access to knowledge: users should not be presented with knowledge that is irrelevant to their topic of interest, or have no right to access. Two general ...
    • Debugging EL+ Ontologies through Horn MUS Enumeration 

      Ignatiev A; Marques-Silva J; Mencía C; Peñaloza R (CEUR-WS.org, 2017)
      In description logics (DLs), axiom pinpointing refers to the problem of enumerating the minimal subsets of axioms from an ontology that entail a given consequence. Recent developments on axiom pinpointing for the light-weight ...
    • Decidability and Complexity of Fuzzy Description Logics 

      Baader F; Borgwardt S; Peñaloza R (2017)
      Fuzzy description logics (FDLs) have been introduced to represent concepts for which membership cannot be determined in a precise way, i.e., where instead of providing a strict border between being a member and not being ...
    • Decidable Reasoning over Timestamped Conceptual Models 

      Artale, A; Toman, D (CEUR, 2008)
    • A decidable very expressive description logic for databases 

      Artale A; Franconi E; Penaloza R; Sportelli F (Springer, 2017)
      We introduce DLR+, an extension of the n-ary propositionally closed description logic DLR to deal with attribute-labelled tuples (generalising the positional notation), projections of relations, and global and local ...
    • A decidable very expressive n-ary description logic for database applications (extended abstract) 

      Artale A; Franconi E; Penaloza R; Sportelli F (RWTH, 2017)
      We introduce DLR+, an extension of the n-ary propositionally closed description logic DLR to deal with attribute-labelled tuples (generalising the positional notation), projections of relations, and global and local ...
    • Deciding equivalences among conjunctive aggregate queries 

      Cohen, S; Nutt, W; Sagiv, Y (Association for Computing Machinery, 2007)
      Equivalence of aggregate queries is investigated for the class of conjunctive queries with comparisons and the aggregate operators count, count-distinct, min, max, and sum. Essentially, this class contains unnested SQL ...
    • Decision Biases in Recommender Systems 

      Teppan, E; Zanker, M (2015)
      Recommender systems support online consumers in identifying suitable products from vast and complex product assortments. Typically, recommender systems compute choice sets of the top-k ranked products. Based on the actual ...
    • A Decision Framework for Blockchain Platforms for IoT and Edge Computing 

      El Ioini N; Pahl C; Helmer S (SCITEPRESS, 2018)
      Blockchains started as an enabling technology in the area of digital currencies with the introduction of Bitcoin. However, blockchains have emerged as a technology that goes beyond financial transactions by providing a ...
    • Decision Making Strategies Differ in the Presence of Collaborative Explanations: Two Conjoint Studies 

      Coba L; Zanker M; Rook L; Symeonidis P (ACM Digital Library, 2019)
      Rating-based summary statistics are ubiquitous in e-commerce, and often are crucial components in personalized recommendation mechanisms. Especially visual rating summarizations have been identified as important means to ...
    • Declarative Process Modeling in BPMN 

      Dumas, M; Maggi, FM; Montali, M; de Giacomo, G (Springer, 2015)
      Traditional business process modeling notations, including the standard Business Process Model and Notation (BPMN), rely on an imperative paradigm wherein the process model captures all allowed activity flows. In other ...
    • Declarative specification and verification of service choreographies 

      Montali, M; Pesic, M; Chesani, F; Mello, P; Storari, S; Van Der Aalst, WMP (Association for Computing Machinery (ACM), 2010)
      Service-oriented computing, an emerging paradigm for architecting and implementing business collaborations within and across organizational boundaries, is currently of interest to both software vendors and scientists. While ...
    • Declarative technologies for open agent systems and beyond 

      Chesani, F; Mello, P; Montali, M; Torroni, P (Springer, 2010)
      Open systems are complex, heterogeneous systems whose complexity is often handled by component-based approaches. While the internal functioning of such components is invisible to the outside, a great emphasis is put on the ...
    • Defining an Open Source Software Trustworthiness Model 

      Taibi, D (IDoESE, 2008)
      In an ideal word, totally trustworthy software would provide an absolute guarantee that it will perform its required functions under all possible circumstances, will do so on time, and will never perform any actions that ...
    • Dependency analysis in ontology-driven content-based systems 

      Abgaz YM; Javed M; Pahl C (Springer, 2012)
      Ontology-driven content-based systems are content-based systems (ODCBS) that are built to provide a better access to information by semantically annotating the content using ontologies. Such systems contain ontology layer, ...
    • Depth map coding using histogram-based segmentation and depth range updating 

      Lin C; Zhao Y; Xiao J; Tillo T (Korean Society for Internet Information, 2015)
      In texture-plus-depth format, depth map compression is an important task. Different from normal texture images, depth maps have less texture information, while contain many homogeneous regions separated by sharp edges. ...
    • Depth Map Down-Sampling and Coding Based on Synthesized View Distortion 

      Yao C; Xiao JM; Tillo T; Zhao Y; Lin CY; Bai HH (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2016)
      In this paper, we propose a depth map down-sampling and coding scheme that minimizes the view synthesis distortion. Moreover, a solution for the optimal depth map down-sampling problem that minimizes the depth-caused ...
    • Depth Map Driven Hole Filling Algorithm Exploiting Temporal Correlation Information 

      Yao C; Tillo T; Zhao Y; Xiao JM; Bai HH; Lin CY (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2014)
      The depth-image-based-rendering is a key technique to realize free viewpoint television. However, one critical problem in these systems is filling the disocclusion due to the 3-D warping process. This paper exploits the ...
    • Depth-Based Stereoscopic Projection Approach for 3D Saliency Detection 

      Lin HY; Lin CY; Zhao Y; Xiao JM; Tillo T (SPRINGER, 2015)
      With the popularity of 3D display and the widespread using of depth camera, 3D saliency detection is feasible and significant. Different with 2D saliency detection, 3D saliency detection increases an additional depth channel ...
    • Describing Database Objects in a Concept Language Environment 

      Artale A; Cesarini F; Soda G (1996)
      We formally investigate the structural similarities and differences existing between object database models and concept languages establishing a correspondence between the two environments. Object database models deal with ...