A Volunteer Design Methodology of Data Warehouses
In the context of Volunteered Geographic Information (VGI), volunteers are not involved in the decisional processes. Moreover, VGI systems...
Using a Conceptual Model to Transform Road Networks from OpenStreetMap to a Graph Database
We present a method for extracting road network data that has been crowdsourced in the OpenStreetMap project and transform...
Modeling Conceptual Characteristics of Virtual Machines for CPU Utilization Prediction
Cloud services have grown rapidly in recent years, which provide high flexibility for cloud users to fulfill their computing...
Towards Data Visualisation Based on Conceptual Modelling
Selecting data, transformations and visual encodings in current data visualisation tools is undertaken at a relatively low level of...
Ontological Deep Data Cleaning
Analytical applications such as forensics, investigative journalism, and genealogy require deep data cleaning in which application-dependent semantic errors and...
Conceptual Modeling to Support Pivoting – An Example from Twitter
Pivoting is used by many startups and large enterprises to reconfigure their structures and relationships in line with their...
Automatic Generation of Security Compliant (Virtual) Model Views
The increased adoption of model-driven engineering in collaborative development scenarios raises new security concerns such as confidentiality and integrity....
SQL or NoSQL? Which Is the Best Choice for Storing Big Spatio-Temporal Climate Data?
Management of big spatio-temporal data such as the results from large scale global climate models has long been a...
The Common Ontology of Value and Risk
Risk analysis is traditionally accepted as a complex and critical activity in various contexts, such as strategic planning and...
UDBMS: Road to Unification for Multi-model Data Management
One of the greatest challenges in big data management is the “Variety” of the data. The data may be...
