Sciweavers

EDM
2010
142views Data Mining» more  EDM 2010»
13 years 5 months ago
A Data Model to Ease Analysis and Mining of Educational Data
Learning software is not designed for data analysis and mining. Because usage data is not stored in a systematic way, its thorough analysis requires long and tedious preprocessing....
André Krüger, Agathe Merceron, Benjami...
ESWS
2008
Springer
13 years 6 months ago
Viewing and Querying Topic Maps in terms of RDF
Both Topic Maps and RDF are popular semantic web standards designed for machine processing of web documents. Since these representations were originally created for different purpo...
Silvia Stefanova, Tore Risch
VLDB
1987
ACM
75views Database» more  VLDB 1987»
13 years 7 months ago
The POSTGRES Data Model
The design of the POSTGRES data model is described. The data model is a relational model that has been extended with abstract data types including user-defined operators and proce...
Lawrence A. Rowe, Michael Stonebraker
VLDB
1991
ACM
179views Database» more  VLDB 1991»
13 years 7 months ago
A Relationship Mechanism for a Strongly Typed Object-Oriented Database Programming Language
Object-oriented data models are receiving wide attention since they provide expressive ionmechanismsto model naturally and directly both structural and behavioral aspectsof comple...
Antonio Albano, Giorgio Ghelli, Renzo Orsini
NGITS
1995
Springer
13 years 7 months ago
The TSIMMIS Approach to Mediation: Data Models and Languages
TSIMMIS—TheStanford-IBMManagerofMultipleInformationSources—isasystemforintegrating information. It offers a data model and a common query language that are designed to support ...
Hector Garcia-Molina, Dallan Quass, Yannis Papakon...
ER
1995
Springer
152views Database» more  ER 1995»
13 years 7 months ago
A Logic Framework for a Semantics of Object-Oriented Data Modeling
We describe a (meta) formalism for defining a variety of (object oriented) data models in a unified framework based on a variation of first-order logic. As specific example we use...
Olga De Troyer, Robert Meersman
KBSE
1998
IEEE
13 years 8 months ago
Identifying Pre-Conditions with the Z/EVES Theorem Prover
Starting from a graphical data model (a subset of the OMT object model), a skeleton of formal specification can be generated and completed to express several constraints and provi...
Yves Ledru
DEXAW
2004
IEEE
99views Database» more  DEXAW 2004»
13 years 8 months ago
GI-Cat: a Web Service for Dataset Cataloguing Based on ISO 19115
In this article, we present the GI-Cat web service: a SOAP-based service which provides the basic functionalities for GI dataset cataloguing and access. The introduced GI-Cat data...
Lorenzo Bigagli, Stefano Nativi, Paolo Mazzetti, G...
CAISE
2006
Springer
13 years 8 months ago
Inter Model Data Exchange of Type Information via a Common Type Hierarchy
Data exchange between heterogeneous schemas is a difficult problem that becomes more acute if the source and target schemas are from different data models. The data type of the obj...
Andrew Smith, Peter McBrien
ADC
2007
Springer
93views Database» more  ADC 2007»
13 years 8 months ago
A Heuristic Approach to Cost-Efficient Derived Horizontal Fragmentation of Complex Value Databases
Derived horizontal fragmentation is one of the main database distribution design techniques. Unlike primary horizontal fragmentation, the decision of derived horizontal fragmentat...
Hui Ma, Klaus-Dieter Schewe, Qing Wang