The Experts below are selected from a list of 61422 Experts worldwide ranked by ideXlab platform
Geert Poels - One of the best experts on this subject based on the ideXlab platform.
-
ontology driven business modelling improving the Conceptual Representation of the rea ontology
International Conference on Conceptual Modeling, 2007Co-Authors: Frederik Gailly, Geert PoelsAbstract:Business modelling research is increasingly interested in exploring how domain ontologies can be used as reference models for business models. The Resource Event Agent (REA) ontology is a primary candidate for ontology-driven modelling of business processes because the REA point of view on business reality is close to the Conceptual modelling perspective on business models. In this paper Ontology Engineering principles are employed to reengineer REA in order to make it more suitable for ontology-driven business modelling. The new Conceptual Representation of REA that we propose uses a single Representation formalism, includes a more complete domain axiomatization (containing definitions of concepts, concept relations and ontological axioms), and is proposed as a generic model that can be instantiated to create valid business models. The effects of these proposed improvements on REA-driven business modelling are demonstrated using a business modelling example.
-
ontology driven business modelling improving the Conceptual Representation of the rea ontology
2007Co-Authors: Frederik Gailly, Geert PoelsAbstract:Business modelling research is increasingly interested in exploring how domain ontologies can be used as reference models for business models. The Resource Event Agent (REA) ontology is a primary candidate for the ontology-driven modelling of business processes because the REA point of view on business reality is close to the Conceptual modelling perspective on business models. In this paper Ontology Engineering principles are employed to restructure REA in order to make it more suitable for ontology-driven business modelling. The redesigned Conceptual Representation of REA uses a single Representation formalism, includes a more complete domain axiomatization (containing definitions of concepts, concept relations and ontological axioms), and is proposed as a meta-model to instantiate valid business models.
Frederik Gailly - One of the best experts on this subject based on the ideXlab platform.
-
ontology driven business modelling improving the Conceptual Representation of the rea ontology
International Conference on Conceptual Modeling, 2007Co-Authors: Frederik Gailly, Geert PoelsAbstract:Business modelling research is increasingly interested in exploring how domain ontologies can be used as reference models for business models. The Resource Event Agent (REA) ontology is a primary candidate for ontology-driven modelling of business processes because the REA point of view on business reality is close to the Conceptual modelling perspective on business models. In this paper Ontology Engineering principles are employed to reengineer REA in order to make it more suitable for ontology-driven business modelling. The new Conceptual Representation of REA that we propose uses a single Representation formalism, includes a more complete domain axiomatization (containing definitions of concepts, concept relations and ontological axioms), and is proposed as a generic model that can be instantiated to create valid business models. The effects of these proposed improvements on REA-driven business modelling are demonstrated using a business modelling example.
-
ontology driven business modelling improving the Conceptual Representation of the rea ontology
2007Co-Authors: Frederik Gailly, Geert PoelsAbstract:Business modelling research is increasingly interested in exploring how domain ontologies can be used as reference models for business models. The Resource Event Agent (REA) ontology is a primary candidate for the ontology-driven modelling of business processes because the REA point of view on business reality is close to the Conceptual modelling perspective on business models. In this paper Ontology Engineering principles are employed to restructure REA in order to make it more suitable for ontology-driven business modelling. The redesigned Conceptual Representation of REA uses a single Representation formalism, includes a more complete domain axiomatization (containing definitions of concepts, concept relations and ontological axioms), and is proposed as a meta-model to instantiate valid business models.
Gabriella Vigliocco - One of the best experts on this subject based on the ideXlab platform.
-
iconicity as a general property of language evidence from spoken and signed languages
Frontiers in Psychology, 2010Co-Authors: Pamela M Perniss, Robin L Thompson, Gabriella ViglioccoAbstract:Current views about language are dominated by the idea of arbitrary connections between linguistic form and meaning. However, if we look beyond the more familiar Indo-European languages and also include both spoken and signed language modalities, we find that motivated, iconic form-meaning mappings are, in fact, pervasive in language. In this paper, we review the different types of iconic mappings that characterize languages in both modalities, including the predominantly visually iconic mappings found in signed languages. Having shown that iconic mapping are present across languages, we then proceed to review evidence showing that language users (signers and speakers) exploit iconicity in language processing and language acquisition. While not discounting the presence and importance of arbitrariness in language, we put forward the idea that iconicity need also be recognized as a general property of language, which may serve the function of reducing the gap between linguistic form and Conceptual Representation to allow the language system to "hook up" to motor, perceptual, and affective experience.
-
iconicity as a general property of language evidence from spoken and signed languages
Frontiers in Psychology, 2010Co-Authors: Pamela M Perniss, Robin L Thompson, Gabriella ViglioccoAbstract:Current views about language are dominated by the idea of arbitrary connections between linguistic form and meaning. However, if we look beyond the more familiar Indo-European languages and also include both spoken and signed language modalities, we find that motivated, iconic form-meaning mappings are, in fact, pervasive in language. In this paper, we review the different types of iconic mappings that characterize languages in both modalities, including the predominantly visually iconic mappings found in signed languages. Having shown that iconic mapping are present across languages, we then proceed to review evidence showing that language users (signers and speakers) exploit iconicity in language processing and language acquisition. While not discounting the presence and importance of arbitrariness in language, we put forward the idea that iconicity need also be recognized as a general property of language, which may serve the function of reducing the gap between linguistic form and Conceptual Representation to allow the language system to "hook up" to motor, perceptual, and affective experience.
Diego Calvanese - One of the best experts on this subject based on the ideXlab platform.
-
ontop answering sparql queries over relational databases
Social Work, 2016Co-Authors: Diego Calvanese, Enjami Cogrel, Sarah Komlaebri, Roma Kontchakov, Davide Lanti, Marti Rezk, Mariano Rodriguezmuro, Guohui XiaoAbstract:We present Ontop, an open-source Ontology-Based Data Access (OBDA) system that allows for querying relational data sources through a Conceptual Representation of the domain of interest, provided in terms of an ontology, to which the data sources are mapped. Key features of Ontop are its solid theoretical foundations, a virtual approach to OBDA, which avoids materializing triples and is implemented through the query rewriting technique, extensive optimizations exploiting all elements of the OBDA architecture, its compliance to all relevant W3C recommendations (including SPARQL queries, R2RML mappings, and OWL2QL and RDFS ontologies), and its support for all major relational databases.
-
enterprise modeling and data warehousing in telecom italia
Information Systems, 2006Co-Authors: Diego Calvanese, Riccardo Rosati, Daniele Nardi, Luigi Dragone, Stefano M TrisoliniAbstract:We present a methodology for Data Warehouse design and its application within the Telecom Italia information system. The methodology is based on a Conceptual Representation of the Enterprise, which is exploited both in the integration phase of the Warehouse information sources and during the knowledge discovery activity on the information stored in the Warehouse. The application of the methodology in the Telecom Italia framework has been supported by prototype software tools both for Conceptual modeling and for data integration and reconciliation.
-
DATA INTEGRATION IN DATA WAREHOUSING
International Journal of Cooperative Information Systems, 2001Co-Authors: Diego Calvanese, Giuseppe De Giacomo, Maurizio Lenzerini, Daniele Nardi, Riccardo RosatiAbstract:Information integration is one of the most important aspects of a Data Warehouse. When data passes from the sources of the application-oriented operational environment to the Data Warehouse, possible inconsistencies and redundancies should be resolved, so that the warehouse is able to provide an integrated and reconciled view of data of the organization. We describe a novel approach to data integration in Data Warehousing. Our approach is based on a Conceptual Representation of the Data Warehouse application domain, and follows the so-called local-as-view paradigm: both source and Data Warehouse relations are defined as views over the Conceptual model. We propose a technique for declaratively specifying suitable reconciliation correspondences to be used in order to solve conflicts among data in different sources. The main goal of the method is to support the design of mediators that materialize the data in the Data Warehouse relations. Starting from the specification of one such relation as a query over the Conceptual model, a rewriting algorithm reformulates the query in terms of both the source relations and the reconciliation correspondences, thus obtaining a correct specification of how to load the data in the materialized view.
-
description logic framework for information integration
Principles of Knowledge Representation and Reasoning, 1998Co-Authors: Diego Calvanese, Giuseppe De Giacomo, Maurizio Lenzerini, Daniele Nardi, Riccardo RosatiAbstract:Information Integration is one of the core problems in distributed databases, cooperative information systems, and data warehousing, which are key areas in the software development industry. Two critical factors for the design and maintenance of applications requiring Information Integration are Conceptual modeling of the domain, and reasoning support over the Conceptual Representation. We demonstrate that Knowledge Representation and Reasoning techniques can play an important role for both of these factors, by proposing a Description Logic based framework for Information Integration. We show that the development of successful Information Integration solutions requires not only to resort to very expressive Description Logics, but also to significantly extend them. We present a novel approach to Conceptual modeling for Information Integration, which allows for suitably modeling the global concepts of the application, the individual information sources, and the constraints among different sources. Moreover, we devise inference procedures for the fundamental reasoning services, namely relation and concept subsumption, and query containment. Finally, we present a methodological framework for Information Integration, which can be applied in several contexts, and highlights the role of reasoning services within the design process.
Brogårdh Christina - One of the best experts on this subject based on the ideXlab platform.
-
Self-reported impairments among people with late effects of polio : a mixed-methods study
'Acta Dermato-Venereologica', 2020Co-Authors: Hammarlund, Catharina Sjödahl, Lexell Jan, Brogårdh ChristinaAbstract:OBJECTIVE: To determine how much people with late effects of polio are bothered by various impairments and their influence on everyday life. DESIGN: A mixed-methods design. SUBJECTS/PATIENTS: Seven women and 7 men (mean age 70 years) with late effects of polio. METHODS: Self-reported Impairments in Persons with late effects of Polio (SIPP) scale and face-to-face interviews. In SIPP, the participants rated, from 1 (not at all) to 4 (extremely), how much they had been bothered by late effects of polio-related impairments. Qualitative data were analysed using systematic text condensation. Each quotation was deductively analysed based on its Conceptual Representation regarding perceived influence on everyday life. RESULTS: Participants were most bothered by muscle and/or joint pain during physical activity, muscle weakness and general fatigue, which corresponded with the number of interview quotations. The impairments negatively influenced daily life, such as household chores, walking, riding a bicycle and social participation. Increased impairments and reduced functioning on the less-affected side also caused worry and distress. CONCLUSION: Common late effects of polio-related impairments greatly affected participants' activity and participation. By using both the SIPP scale and face-to-face interviews, an increased understanding of how late effects of polio-related impairments influence everyday life was achieved
-
Self-reported impairments among people with late effects of polio : a mixed-method study
'Acta Dermato-Venereologica', 2020Co-Authors: Sjödahl Hammarlund Catharina, Lexell Jan, Brogårdh ChristinaAbstract:Objective: To determine how much people with late effects of polio are bothered by various impairments and their influence on everyday life. Design: A mixed-methods design. Subjects/patients: Seven women and 7 men (mean age 70 years) with late effects of poli. Methods: Self-reported Impairments in Persons with late effects of Polio (SIPP) scale and face-to-face interviews. In SIPP, the participants rated, from 1 (not at all) to 4 (extremely), how much they had been bothered by late effects of polio-related impairments. Qualitative data were analysed using systematic text condensation. Each quotation was deductively analysed based on its Conceptual Representation regarding perceived influence on everyday life. Results: Participants were most bothered by muscle and/or joint pain during physical activity, muscle weakness and general fatigue, which corresponded with the number of interview quotations. The impairments negatively influenced daily life, such as household chores, walking, riding a bicycle and social participation. Increased impairments and reduced functioning on the less-affected side also caused worry and distress. Conclusion: Common late effects of polio-related impairments greatly affected participants' activity and participation. By using both the SIPP scale and face-to-face interviews, an increased understanding of how late effects of polio-related impairments influence everyday life was achieved
