Now showing items 1-20 of 25

  • An analysis pattern for electronic marketplaces 

    Queralt Calafat, Anna; Teniente López, Ernest (2004-02)
    External research report
    Open Access
    An electronic marketplace supports the interaction among different users to exchange information about products to sell and buy. Significance of electronic marketplaces is given by the huge amount of web sites that are ...
  • A platform independent model for the electronic marketplace domain 

    Queralt Calafat, Anna; Teniente López, Ernest (2005-04)
    External research report
    Open Access
    An electronic marketplace supports the interaction among different users to exchange information about products to sell and buy. Significance of electronic marketplaces is given by the huge amount of web sites that are ...
  • Artifact-centric business process models in UML 

    Estañol Lamarca, Montserrat; Queralt Calafat, Anna; Sancho Samsó, María Ribera; Teniente López, Ernest (2012)
    Conference report
    Open Access
    Business process modeling using an artifact-centric approach has raised a signi cant interest over the last few years. This approach is usually stated in terms of the BALSA framework which de nes the four \dimensions" of ...
  • AuRUS: Automated Reasoning on UML/OCL Schemas 

    Queralt Calafat, Anna; Rull Fort, Guillem; Teniente López, Ernest; Farré Tost, Carles; Urpí Tubella, Antoni (Springer Verlag, 2010)
    Conference lecture
    Restricted access - publisher's policy
    To ensure the quality of an information system, the conceptual schema that represents its domain must be semantically correct. We present a prototype to automatically check whether a UML schema with OCL constraints is right ...
  • AuRUS: explaining the validation of UML/OCL conceptual schemas 

    Rull Fort, Guillem; Farré Tost, Carles; Queralt Calafat, Anna; Teniente López, Ernest; Urpí Tubella, Antoni (2015-05-01)
    Article
    Open Access
    The validation and the verification of conceptual schemas have attracted a lot of interest during the last years, and several tools have been developed to automate this process as much as possible. This is achieved, in ...
  • Dataclay: A distributed data store for effective inter-player data sharing 

    Marti Fraiz, Jonathan; Queralt Calafat, Anna; Gasull Moreira, Daniel; Barceló Cuerda, Alex; Costa Prats, Juan José; Cortés, Toni (2017-09-01)
    Article
    Restricted access - publisher's policy
    In the Big Data era, both the academic community and industry agree that a crucial point to obtain the maximum benefits from the explosive data growth is integrating information from different sources, and also combining ...
  • EU-Rent as an artifact-centric process model: technical report 

    Estañol Lamarca, Montserrat; Queralt Calafat, Anna; Sancho Samsó, María Ribera; Teniente López, Ernest (2012-09-20)
    External research report
    Open Access
    Business process modeling using an artifact-centric approach has raised a significant interest over the last few years. This approach is usually stated in terms of the BALSA framework which defi nes the four dimensions ...
  • EU-Rent car rentals specification 

    Frias, Leonor; Queralt Calafat, Anna; Olivé Ramon, Antoni (2003-12)
    External research report
    Open Access
    EU-Rent is a widely known case study being promoted as a basis for demonstration of product capabilities. However, no in-depth case analysis neither specification has been developed. Therefore, it was considered ...
  • Facilitating the definition of general constraints in UML (extended version) 

    Costal Costa, Dolors; Gómez Seoane, Cristina; Queralt Calafat, Anna; Raventós Pagès, Ruth; Teniente López, Ernest (2006-04)
    External research report
    Open Access
    One important aspect in the specification of conceptual schemas is the definition of general constraints that cannot be expressed by the predefined constructs provided by conceptual modeling languages. In general this is ...
  • Fusing storage and computing for the domain of business intelligence and analytics: research opportunities 

    Queralt Calafat, Anna; Marti Fraiz, Jonathan; Baars, Henning; Brinkmann, Andre; Cortés, Toni (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Restricted access - publisher's policy
    With the growing importance of external and shared data, the set of requirements for Business Intelligence and Analytics (BIA) is shifting. Current solutions still come with shortcomings, esp. In multi-stakeholder environments ...
  • mF2C: Towards a coordinated management of the IoT-fof-cloud continuum 

    Masip Bruin, Xavier; Marín Tordera, Eva; Juan Ferrer, Ana; Queralt Calafat, Anna; Jukan, Admela; García Almiñana, Jordi; Lezzi, Daniele; Jensen, Jens; Cordeiro, Cristovao; Leckey, alexander; Salis, Antonio; Guilhot, Denis; Cankar, Matic (2018)
    Conference report
    Restricted access - publisher's policy
    Fog computing enables location dependent resource allocation and low latency services, while fostering novel market and business opportunities in the cloud sector. Aligned to this trend, we refer to Fog-tocloud (F2C) ...
  • OCL-Lite: a decidable (yet expressive) fragment of OCL 

    Queralt Calafat, Anna; Artale, Alessandro; Calvanese, Diego; Teniente López, Ernest (2012)
    Conference report
    Open Access
    UML has become a de facto standard in conceptual modeling. Class diagrams in UML allow one to model the data in the domain of interest by specifying a set of graphical constraints. However, in most cases one needs to provide ...
  • On the semantics of operation contracts in conceptual modeling 

    Queralt Calafat, Anna; Teniente López, Ernest (2004-04)
    External research report
    Open Access
    This paper describes two different ways of understanding operation contracts in the context of conceptual modeling. These two points of view are based in the total and partial correctness approaches from axiomatic programming, ...
  • Predicting access to persistent objects through static code analysis 

    Touma, Rizkallah; Queralt Calafat, Anna; Cortés, Toni; Pérez Hernandez, María S. (Springer, 2017)
    Conference report
    Open Access
    In this paper, we present a fully-automatic, high-accuracy approach to predict access to persistent objects through static code analysis of object-oriented applications. The most widely-used previous technique uses a simple ...
  • PyCOMPSs: Parallel computational workflows in Python 

    Tejedor, Enric; Becerra Fontal, Yolanda; Alomar, Guillem; Queralt Calafat, Anna; Badia, Rosa M.; Torres Viñals, Jordi; Cortés, Toni; Labarta Mancho, Jesús José (2017-01-01)
    Article
    Open Access
    The use of the Python programming language for scientific computing has been gaining momentum in the last years. The fact that it is compact and readable and its complete set of scientific libraries are two important ...
  • Reasoning on UML class diagrams with OCL constraints 

    Queralt Calafat, Anna; Teniente López, Ernest (2006-04)
    External research report
    Open Access
    We propose a new approach to check whether a given UML class diagram with its OCL integrity constraints satisfies a set of desirable properties such as schema satisfiability, class liveliness, redundancy of integrity ...
  • Specifying artifact-centric business process models in UML 

    Estañol Lamarca, Montserrat; Queralt Calafat, Anna; Sancho Samsó, María Ribera; Teniente López, Ernest (Springer, 2015-04-01)
    Part of book or chapter of book
    Open Access
    In recent years, the artifact-centric approach to process mod- eling has attracted a lot of attention. One of the research lines in this area is finding a suitable way to represent the dimensions in this approach. Bearing ...
  • Specifying artifact-centric business process models in UML: technical report 

    Estañol Lamarca, Montserrat; Queralt Calafat, Anna; Sancho Samsó, María Ribera; Teniente López, Ernest (2015-05-19)
    External research report
    Open Access
    In recent years, the artifact-centric approach to process modeling has attracted a lot of attention. One of the research lines in this area is finding a suitable way to represent the dimensions in this approach. Bearing ...
  • Strict and extended interpretations of operation contracts in conceptual modeling 

    Queralt Calafat, Anna; Teniente López, Ernest (2005-05)
    External research report
    Open Access
    This paper describes two different ways of understanding operation contracts in conceptual modeling. The main difference between them lies in the way operation postconditions and integrity constraints are guaranteed, which ...
  • Towards DaaS 2.0: enriching data models 

    Marti Fraiz, Jonathan; Gasull, Daniel; Queralt Calafat, Anna; Cortés, Toni (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Open Access
    Current Data as a Service solutions present a lack of flexibility in terms of allowing users to customize the underlying data models by including new concepts or functionalities. Data providers either publish global APIs ...