Sciweavers

100
Voted
APCCM
2008
15 years 2 months ago
Model Eco-Systems: Preliminary Work
Modeling is core software engineering practice. Conceptual models are constructed to establish an abstract understanding of the domain among stakeholders. These are then refined i...
Aditya Ghose, George Koliadis
AMW
2010
15 years 2 months ago
Minimising RDF Graphs under Rules and Constraints Revisited
Based on practical observations on rule-based inference on RDF data, we study the problem of redundancy elimination in RDF in the presence of rules (in the form of Datalog rules) a...
Reinhard Pichler, Axel Polleres, Sebastian Skritek...
109
Voted
APCCM
2008
15 years 2 months ago
Differentiating Conceptual Modelling from Data Modelling, Knowledge Modelling and Ontology Modelling and a Notation for Ontology
This paper considers conceptual modelling for three purposes namely data modelling, knowledge modelling and ontology modelling. It differentiates between the nature of the concept...
Tharam S. Dillon, Elizabeth Chang, Maja Hadzic, Po...
98
Voted
AMW
2010
15 years 2 months ago
On Incomplete XML Documents with Integrity Constraints
We consider incomplete specifications of XML documents in the presence of schema information and integrity constraints. We show that integrity constraints such as keys and foreign ...
Pablo Barceló, Leonid Libkin, Juan L. Reutt...
102
Voted
AMW
2010
15 years 2 months ago
Query Rewriting under Non-Guarded Rules
We address the problem of answering conjunctive queries over knowledge bases, specified by sets of first-order sentences called tuple-generating dependencies (TGDs). This problem i...
Andrea Calì, Georg Gottlob, Andreas Pieris
119
Voted
AMW
2010
15 years 2 months ago
Multiresolution Cube Estimators for Sensor Network Aggregate Queries
In this work we present in-network techniques to improve the efficiency of spatial aggregate queries. Such queries are very common in a sensornet setting, demanding more targeted t...
Alexandra Meliou, Carlos Guestrin, Joseph M. Helle...
92
Voted
APCCM
2008
15 years 2 months ago
Constraint Acquisition - You Can Chase but You Cannot Find
We identify established tableaux techniques as an invaluable tool for semantic knowledge acquisition in the design process of relational databases. Sample databases allow users an...
Sven Hartmann, Sebastian Link, Thu Trinh
AMW
2010
15 years 2 months ago
Generating XML/GML Schemas from Geographic Conceptual Schemas
Abstract. A large volume of data with complex structures is currently represented in GML (Geography Markup Language) for storing and exchanging geographic information. As the size ...
André C. Hora, Clodoveu A. Davis Jr., Mirel...
APCCM
2008
15 years 2 months ago
A Framework Based Measurements for Evaluating an IS Quality
There is an increasing community of researchers trying to draw attention to the importance of evaluation issues. Some approaches can be followed to evaluate the quality of softwar...
Olfa Lamouchi, Amar Ramdane-Cherif, Nicole L&eacut...