Now showing items 1-13 of 13

  • A filtering engine for large conceptual schemas 

    Villegas Niño, Antonio (Universitat Politècnica de Catalunya, 2013-01-29)
    Doctoral thesis
  • A method for filtering large conceptual schemas 

    Villegas Niño, Antonio; Olivé Ramon, Antoni (Springer, 2010)
    Conference report
    Restricted access - publisher's policy
    We focus on the problem of filtering a fragment of the knowledge contained in a large conceptual schema. The problem appears in many information systems development activities in which people need to operate with a piece ...
  • A tool for filtering large conceptual schemas 

    Villegas Niño, Antonio; Sancho Samsó, María Ribera; Olivé Ramon, Antoni (Springer Verlag, 2011)
    Conference lecture
    Restricted access - publisher's policy
    The wealth of knowledge the conceptual schemas of many real-world information systems contain makes them very useful to their potential target audience. However, the sheer size of those schemas makes it difficult to extract ...
  • A web-based filtering engine for understanding event specifications in large conceptual schemas 

    Villegas Niño, Antonio; Olivé Ramon, Antoni; Sancho Samsó, María Ribera (Springer, 2012)
    Conference lecture
    Open Access
    A complete conceptual schema must include all relevant general static and dynamic aspects of an information system. Event types describe a nonempty set of allowed changes in the population of entity or relationship types ...
  • Computing the Importance of Schema Elements Taking Into Account the Whole SCHEMA 

    Villegas Niño, Antonio (Universitat Politècnica de Catalunya, 2009-06)
    Master thesis
    Open Access
    Conceptual Schemas are one of the most important artifacts in the development cycle of information systems. To understand the conceptual schema is essential to get involved in the information system that is described within ...
  • Extending the methods for computing the importance of entity types in large conceptual schemas 

    Villegas Niño, Antonio; Olivé Ramon, Antoni (2010-11-01)
    Article
    Open Access
    Visualizing and understanding large conceptual schemas requires the use of specific methods. These methods generate clustered, summarized, or focused schemas that are easier to visualize and understand. All of these ...
  • Improving the usability of HL7 information models by automatic filtering 

    Villegas Niño, Antonio; Olivé Ramon, Antoni; Vilalta, Josep (IEEE Computer Society Publications, 2010)
    Conference report
    Open Access
    The amount of knowledge represented in the Health Level 7 International (HL7) information models is very large. The sheer size of those models makes them very useful for the communities for which they are developed. ...
  • On computing the importance of associations in large conceptual schemas 

    Villegas Niño, Antonio; Olivé Ramon, Antoni; Sancho Samsó, María Ribera (2012)
    Article
    Restricted access - publisher's policy
    The visualization and the understanding of large conceptual schemas require the use of specific methods. These methods generate clustered, summarized or focused schemas that are easier to visualize and to understand. All ...
  • On computing the importance of entity types in large conceptual schemas 

    Villegas Niño, Antonio; Olivé Ramon, Antoni (Springer Verlag, 2009)
    Conference report
    Restricted access - publisher's policy
    The visualization and the understanding of large conceptual schemas require the use of specific methods. These methods generate clustered, summarized or focused schemas that are easier to visualize and to understand. All ...
  • Processador d'expressions OCL en un entorn de modelització conceptual 

    Villegas Niño, Antonio (Universitat Politècnica de Catalunya, 2008-06-16)
    Master thesis (pre-Bologna period)
    Open Access
  • UML profile for MIF static models 

    Villegas Niño, Antonio; Olivé Ramon, Antoni (2014-05)
    Article
    Restricted access - publisher's policy
    This article summarizes our contribution to the 2012-2013 HL7 Tooling Challenge “Produce a UML Profile for MIF Static Models”. The main goal of the profile is to enable the representation in UML of the MIF static models. ...
  • UML profile for MIF static models. Version 1.0 

    Villegas Niño, Antonio; Olivé Ramon, Antoni (2013-09-26)
    External research report
    Open Access
    HL7 provides standards for interoperability that improve care delivery, optimize workflow, reduce ambiguity and enhance knowledge transfer among all of our stakeholders, including healthcare providers, government agencies, ...
  • Understanding constraint expressions in large conceptual schemas by automatic filtering 

    Villegas Niño, Antonio; Olivé Ramon, Antoni; Sancho Samsó, María Ribera (Springer, 2012)
    Conference report
    Open Access
    Human understanding of constraint expressions (also called schema rules) in large conceptual schemas is very di cult. This is due to the fact that the elements (entity types, attributes, relationship types) involved in an ...