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Book ChapterDOI

Semantic cockpit: an ontology-driven, interactive business intelligence tool for comparative data analysis

TLDR
The architecture of the Semantic Cockpit is outlined and its core ideas are introduced by a sample use case and it is suggested that knowledge about insights gained from previous analysis, and knowledge about how to act upon unusually low or high comparison scores, should be considered.
Abstract
Business analysts frequently use Cockpits or Dashboards as front ends to data warehouses for inspecting and comparing multidimensional data at various levels of detail. These tools, however, perform badly in supporting a business analyst in his or her business intelligence task of understanding and evaluating a business within its environmental context through comparative data analysis. With important business knowledge either unrepresented or represented in a form not processable by automatic reasoning, the analyst is limited in the analyses that can be formulated and she or he heavily suffers from information overload with the need to re-judge similar situations again and again, and to re-discriminate between already explained and novel relationships between data. In an ongoing research project we try to overcome these limitations by applying and extending semantic technologies, such as ontologies and business rules, for comparative data analysis. The resulting Semantic Cockpit assists and guides the business analyst due to reasoning about various kinds of knowledge, explicitly represented by machine-processable ontologies, such as organisation-internal knowledge, organisation external domain knowledge, the semantics of measures and scores, knowledge about insights gained from previous analysis, and knowledge about how to act upon unusually low or high comparison scores. This paper outlines the architecture of the Semantic Cockpit and introduces its core ideas by a sample use case.

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Citations
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Journal ArticleDOI

The use of Semantic Web technologies for decision support --a survey

TL;DR: The results of a structured literature survey of Semantic Web technologies in DSS are presented, together with the results of interviews with DSS practitioners, to provide an overview of current research as well as open research areas, trends and new directions.
Proceedings ArticleDOI

Towards ontology-based OLAP: datalog-based reasoning over multidimensional ontologies

TL;DR: This paper proposes hierarchical and multidimensional ontologies to better capture these structural specificities of business analysts and defines and implements the abstract structure and semantics of multiddimensional ontologies as rules and constraints in Datalog with negation and represent multid dimensional ontology as Datalogs facts.

Using CDISC ODM and the RDF Data Cube for the Semantic Enrichment of Longitudinal Clinical Trial Data.

TL;DR: The objective of this paper is to highlight the complementarities of Clinical Data Management Systems standards with novel approaches to manage large volume of heterogeneous linked data resources, such as the W3C RDF Data Cube.
Journal ArticleDOI

Semantic enrichment of longitudinal clinical study data using the CDISC standards and the semantic statistics vocabularies

TL;DR: A Linked Clinical Data Cube (LCDC), which combines the strength of the RDF Data Cube and DDI-RDF vocabulary to enrich clinical data based on the CDISC standards, demonstrates the potential of the two vocabularies in overcoming the monolithic nature of the underlying model and improving the navigation and querying of the data from multiple angles.
Book ChapterDOI

Business model ontologies in OLAP cubes

TL;DR: This paper adopts business model ontologies for the representation of non-numeric measures in OLAP cubes and proposes modeling guidelines and adapt traditional OLAP operations for ontology-valued measures.
References
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Journal ArticleDOI

The dimensional fact model: a conceptual model for data warehouses

TL;DR: This paper formalizes a graphical conceptual model for data warehouses, called Dimensional Fact model, and proposes a semi-automated methodology to build it from the pre-existing schemes describing the enterprise relational database.
Journal ArticleDOI

A framework for multidimensional design of data warehouses from ontologies

TL;DR: A user-centered approach to support the end-user requirements elicitation and the data warehouse multidimensional design tasks is introduced, based on a reengineering process that derives the multiddimensional schema from a conceptual formalization of the domain.
Book ChapterDOI

Multidimensional integrated ontologies: a framework for designing semantic data warehouses

TL;DR: TheSemantic Data Warehouse is proposed to be a repository of ontologies and semantically annotated data resources and an ontology-driven framework to design multidimensional analysis models for Semantic Data Warehouses is proposed.
Proceedings ArticleDOI

Aggregate queries over ontologies

TL;DR: This work proposes syntax and semantics for epistemic aggregate queries over ontologies and study query answering for MAX, MIN, COUNT, CNTD, SUM, AVG queries for the ontology language DL-LiteA.
Journal ArticleDOI

Extending OCL for OLAP querying on conceptual multidimensional models of data warehouses

TL;DR: A solution to this drawback consisting of an extension to the object constraint language (OCL), which has been developed to include a set of predefined OLAP operators that can be used to define platform-independent OLAP queries as a part of the specification of the data warehouse conceptual multidimensional model.
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