Designing query languages for graph structured data is an active field of research, where expressiveness and efficient algorithms for query evaluation are conflicting goals. To better handle dynamically changing data, recent work has been done on designing query languages that can compare values stored in the graph database, without hard coding the values in the query. The main idea is to allow...

The Internet users have to perform a lot of search to find web pages with relevant information. The paper proposes an approach for utilization of a hierarchy of concepts to perform identification of web pages in the environment of the Semantic Web. A user provides a hierarchy of concepts that can only partially “cover” their domain of interest. Ontologies related to that domain are used to inst...

Several methods exist in order to estimate the size of a software project, in a phase when detailed Function Point counts cannot be performed. While the Derived Estimation (or Algorithmic Model) Methods result in more accurate, objective, and repeatable estimates, these need always to be calibrated through a set of historical (statistical) data; this also means that estimation for atypical case...

In a recent paper (Reid et al., 2009) we introduced a method to calculate optimal hierarchies in the visual network that utilizes continuous, rather than discrete, hierarchical levels, and permits a range of acceptable values rather than attempting to fit fixed hierarchical distances. There, to obtain a hierarchy, the sum of deviations from the constraints that define the hierarchy was minimize...

Purpose – To provide an interesting approach for determining interval measures, through the analytic hierarchy process, for integration with social network analysis for knowledge mapping in organizations. Design/methodology/approach – In order to develop improved organizational and business processes through knowledge management, a knowledge audit should be conducted to better understand the kn...

A large hierarchy of the Dirac masses can result in a small hierarchy for the low energy masses of the active neutrinos. This can happen even if the Majorana masses of right-handed neutrinos are all equal. A realistic description of the observed neutrino masses and mixing can be obtained starting from a large hierarchy in the Dirac masses. A large mixing for solar neutrinos results from the neu...