Formal Concept Analysis for Qualitative Data Analysis over Triple Stores
Business Intelligence solutions provide different means like OLAP, data mining or case based reasoning to explore data. Standard BI...
Semantic Cockpit: An Ontology-Driven, Interactive Business Intelligence Tool for Comparative Data Analysis
Business analysts frequently use Cockpits or Dashboards as front ends to data warehouses for inspecting and comparing multi-dimensional data...
A Model-Driven Approach for Enforcing Summarizability in Multidimensional Modeling
The development of a data warehouse system is based on a conceptual multidimensional model, which provides a high level...
SPIDER-Graph: A Model for Heterogeneous Graphs Extracted from a Relational Database
An adapted modeling and visualization technique of links and interactions between several objects,e.g. customers and products, social network and...
Repairing Dimension Hierarchies under Inconsistent Reclassification
On-Line Analytical Processing (OLAP) dimensions are usually modelled as a hierarchical set of categories (the dimension schema), and dimension...
Exploiting Data Dependencies with Null Values for Ontology Extraction
I present a novel methodology to automatically extract ontologies in the form of conceptual schemes characterizing raw data and...
GrHyMM: A Graph-Oriented Hybrid Multidimensional Model
The main methodologies for the data warehouse design are based on two approaches which are opposite and alternative each...
Partial Multi-dimensional Schema Merging in Heterogeneous Data Warehouses
In recent years, novel approaches and architectures to support Data Warehouse integration (like the P2P Data Warehouse , also...
Ontologies and Functional Dependencies for Data Integration and Reconciliation
Integrating data sources is the key success of business intelligence systems. The exponential growth of autonomous data sources over...
Knowlog: A Declarative Language for Reasoning about Knowledge in Distributed Systems
In the last few years, researchers started to investigate how recursive queries and deductive languages can be applied to...
