Now showing items 255-274 of 447

    • Multiple description coding for H.264/AVC with redundancy allocation at macro block level 

      Lin C; Tillo T; Zhao Y; Jeon B (2011)
      In this paper, a novel multiple description video coding scheme is proposed to insert and control the redundancy at macro block (MB) level. By analyzing the error propagation paths, the relative importance of each MB is ...
    • Multiple Description Coding for Stereoscopic Videos With Stagger Frame Order 

      Lin CY; Zhao Y; Tillo T; Xiao JM (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2015)
      Due to the prediction structures employed in video coding, the loss of one packet will affect many following frames. In this paper, a multiple description coding scheme with stagger frame order is proposed for stereoscopic ...
    • Multiple Descriptions Based on Multirate Coding for JPEG 2000 and H.264/AVC 

      Tillo T; Baccaglini E; Olmo G (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2010)
      Multiple description coding (MDC) makes use of redundant representations of multimedia data to achieve resiliency. Descriptions should be generated so that the quality obtained when decoding a subset of them only depends ...
    • Multiview video plus depth transmission via virtual-view-assisted complementary down/upsampling 

      Jin Z; Tillo T; Xiao J; Zhao Y (Springer International Publishing, 2016)
      Multiview video plus depth is a popular 3D video format which can provide viewers a vivid 3D feeling. However, its requirements in terms of computational complexity and transmission bandwidth are more than that of conventional ...
    • MusicBox: Personalized Music Recommendation Based on Cubic Analysis of Social Tags 

      Nanopoulos A; Rafailidis D; Symeonidis P; Manolopoulos Y (2010)
      Social tagging is becoming increasingly popular in music information retrieval (MIR). It allows users to tag music items like songs, albums, or artists. Social tags are valuable to MIR, because they comprise a multifaced ...
    • A narrative in three acts: Using combinations of image schemas to model events 

      Besold TR; Hedblom MM; Kutz O (2017)
      Image schemas have been proposed as conceptual building blocks corresponding to the hypothesised most fundamental embodied experiences. We formally investigate how combinations of image schemas (or 'image schematic profiles') ...
    • Nearest-biclusters collaborative filtering based on constant and coherent values 

      Symeonidis P; Nanopoulos A; Papadopoulos A; Manolopoulos Y (2008)
      Collaborative Filtering (CF) Systems have been studied extensively for more than a decade to confront the "information overload" problem. Nearest-neighbor CF is based either on similarities between users or between items, ...
    • Nested preferences in answer set programming 

      Confalonieri R; Nieves J (2011)
      In this paper, we define a class of nested logic programs, called Nested Logic Programs with Ordered Disjunction (LPODs), which makes it possible to specify conditional (qualitative) preferences by means of nested preference ...
    • A New Shifted Block GMRES Method with Inexact Breakdowns for Solving Multi-Shifted and Multiple Right-Hand Sides Linear Systems 

      Sun DL; Huang TZ; Carpentieri B; Jing YF (Springer US, 2018)
      We consider the efficient solution of linear systems with multiple shifts and multiple right-hand sides given simultaneously that arise frequently in large-scale scientific and engineering simulations. We introduce a new ...
    • Non è mai troppo tardi 2.0 

      Marengo, E; Baldoni, M (Federazione Italiana Elettrotecnica, Elettronica, Automazione, Informatica e Telecomunicazioni, 2010)
    • Non-normal modalities in variants of linear logic 

      Porello D; Troquard N (Taylor and Francis Ltd., 2015)
      This article presents modal versions of resource-conscious logics. We concentrate on extensions of variants of linear logic with one minimal non-normal modality. In earlier work, where we investigated agency in multi-agent ...
    • Notes on Logics of Metric Spaces 

      Kutz, O (Springer Verlag (Germany), 2007)
      In [14], we studied the computational behaviour of various first-order and modal languages interpreted in metric or weaker distance spaces. [13] gave an axiomatisation of an expressive and decidable metric logic. The main ...
    • A novel application of Open Source technologies to measure agile software development process 

      Corral Velazquez, LR; Janes, A; Remencius, T; Strumpflohner, J; Vlasenko, J (2012)
      In the last 10 years Open Source products have been widely used in industry. New methodologies and best practices to develop Open Source software appeared. In this work, we present an application that runs on Android-based ...
    • A novel Lanczos-type procedure for computing eigenelements of Maxwell and Helmholtz problems 

      Carpentieri B; Jing YF; Huang TZ (2010)
      We introduce a novel variant of the Lanczos method for computing a few eigenvalues of sparse and/or dense non-Hermitian systems arising from the discretization of Maxwell- or Helmholtz-type operators in Electromagnetics. ...
    • Object-oriented software extensions in practice 

      Robbes R; Röthlisberger D; Tanter É (Kluwer Academic Publishers, 2015)
      As software evolves, data types have to be extended, possibly with new data variants or new operations. Object-oriented design is well-known to support data extensions well. In fact, most popular books showcase data ...
    • An observational user study for group recommender systems in the tourism domain 

      Delic A; Neidhardt J; Nguyen TN; Ricci G (2018)
      In this article we argue and give evidence that the research on group recommender systems must look more carefully at the dynamics of group decision-making in order to produce technologies that will be truly beneficial for ...
    • OCL-Lite: Finite reasoning on UML/OCL conceptual schemas 

      Queralt A; Artale A; Calvanese D; Teniente E (2012)
      To ensure the quality of an information system we must guarantee the correctness of the conceptual schema that represents the knowledge about its domain. The high expressivity of UML schemas annotated with textual OCL ...
    • Off-diagonal low-rank preconditioner for difficult PageRank problems 

      Shen ZL; Huang TZ; Carpentieri B; Wen C; Gu XM; Tan XY (North-Holland, 2019)
      PageRank problem is the cornerstone of Google search engine and is usually stated as solving a huge linear system. Moreover, when the damping factor approaches 1, the spectrum properties of this system deteriorate rapidly ...
    • On porting software visualization tools to the web 

      D'Ambros M; Lanza M; Lungu M; Robbes R (2011)
      Software systems are hard to understand due to the complexity and the sheer size of the data to be analyzed. Software visualization tools are a great help as they can sum up large quantities of data in dense, meaningful ...
    • On Simplification of Schema Mappings 

      Calvanese D; De Giacomo G; Lenzerini M; Vardi M (2013)
      A schema mapping is a formal specification of the relationship holding between the databases conforming to two given schemas, called source and target, respectively. While in the general case a schema mapping is specified ...