This study has developed a support system that can retrieve papers by using the paper-relationship diagrams (PRDs) that express the relationships among papers. The system has the following functions: (1) users can see various relationships among papers by visualizing of PRDs and (2) the visualization patterns can be changed dynamically by users’ point of view.

We discuss the design of an agent for coaching collaborative learning in a distance learning context. The learning domain is entity-relationship modeling, a domain in which collaborative problem solving is regularly practiced, and for which there exist formally interpretable representations of problem solutions known as entity-relationship diagrams. The design of the coach was based on socio-co...

The Social Web is transforming the relationship between companies and customers. It offers the means to redesign the fundamental structure of customer service systems and to refocus on the relationship aspect of customer relationship management (CRM). Although various examples illustrate how companies may use Social Media in the field of CRM, the necessary IT systems are still open for research...

Little work has been completed which addresses the logical composition and use of ternary relationships in entity-relationship modeling. Many modeling notations and most CASE tools do not allow for ternary relationships. Alternative methods and substitutes for ternary relationship structures do not necessarily reflect the original logic, semantics or constraints of a given situation. Furthermor...

In previous work we showed how student-produced entity-relationship diagrams (ERDs) could be automatically marked with good accuracy when compared with human markers. In this paper we report how effective the same techniques are when applied to syntactically similar UML sequence diagrams and discuss some issues that arise which did not occur with ERDs. We have found that, on a corpus of 100 stu...

In the analysis phase of the information system development (ISD), the users' requirements are studied and defined. In most ISD methodologies, the requirements are defined by two models: a conceptual data model in form of e.g. an entity-relationship (ER) diagram or a class diagram; and a functional model in form of e.g. data flow diagrams (DFD) or use cases. Different ISD methodologies prescrib...

We present a variant of the Taylor diagram, a type of 2D plot that succinctly shows the relationship between two or more random variables based on their variance and correlation. The Taylor diagram has been adopted by the climate and geophysics communities to produce insightful visualizations, e.g., for intercomparison studies. Our variant, which we call the Mutual Information Diagram, represen...

---------------------------------------------------------------------***--------------------------------------------------------------------Abstract Entity Relationship modeling is the process of coming up with an abstract and conceptual representation of data. Entity Relationship diagrams ultimately model the databases. Entity Relationship model is generally better in relationship name and par...

We explore the criteria that contribute to the validity of modeling structures within the entity-relationship (ER) diagram. Our approach examines cardinality constraints in conjunction with the degree of the relationship to address constraint consistency and role uniqueness issues. Here we use both maximum and minimum cardinality constraints yielding a complete analysis of the structural validi...