World Academy of Science, Engineering and Technology, International Journal of Social, Behavioral, Educational, Economic, Business and Industrial Engineering, Jan 14, 2015
Abstract. Designing new-generation diversity-aware tools that face up to the emerging complexity ... more Abstract. Designing new-generation diversity-aware tools that face up to the emerging complexity in knowledge is one of the biggest research challenges in recent years. In this paper, we provide key notions about opinion, bias and diversity, and propose an interdisciplinary approach when managing them. Our basic tenet is that diversity should be seen as an asset rather than as a problem to be avoided a priori.
In representing the shared view of all the people involved, building a Knowledge Organization Sys... more In representing the shared view of all the people involved, building a Knowledge Organization System (KOS) from scratch is extremely costly, and it is therefore fundamental to reuse existing resources. This can be done by progressively extending the KOS with knowledge coming from similar KOS and by promoting interoperability among them. The linked data initiative is indeed fostering people to share and integrate their datasets into a giant network of interconnected resources. This enables different applications to interoperate and share their data. However, the integration should take into account the purpose of the datasets and make explicit the semantics. In fact, the difference in the purpose is reflected in the difference in the semantics. With this paper we (a) highlight the potential problems that may arise by not taking into account purpose and semantics, (b) make clear how the difference in the purpose is reflected in totally different semantics and (c) provide an algorithm ...
The minimal mapping between two lightweight ontologies contains that minimal subset of mapping el... more The minimal mapping between two lightweight ontologies contains that minimal subset of mapping elements such that all the others can be efficiently computed from them. They have clear advantages in visualization and user interaction since they are the minimal amount of information that needs to be dealt with. They make the work of the user much easier, faster and less error prone. Experiments on our proposed algorithm to compute them demonstrate a substantial improvement both in run-time and number of elements found.
Given two classifications, or lightweight ontologies, we compute the minimal mapping, namely the ... more Given two classifications, or lightweight ontologies, we compute the minimal mapping, namely the subset of all possible correspondences, called mapping elements, between them such that i) all the others can be computed from them in time linear in the size of the input ontologies, and ii) none of them can be dropped without losing property i). In this paper we provide a formal definition of minimal mappings and define a time efficient computation algorithm which minimizes the number of comparisons between the nodes of the two input ontologies. The experimental results show a substantial improvement both in the computation time and in the number of mapping elements which need to be handled.
Evaluating and comparing different ontology matching techniques is a complex multifaceted problem... more Evaluating and comparing different ontology matching techniques is a complex multifaceted problem. Currently, diverse golden standards and various practices are used for evaluations. In this paper we show that, by following certain rules, the quality of the evaluations can be significantly improved, particularly in regard to the accuracy of precision and recall measures obtained.
Designing new-generation diversity-aware tools that face up to the emerging complexity in knowled... more Designing new-generation diversity-aware tools that face up to the emerging complexity in knowledge is one of the biggest research challenges in recent years. In this paper, we provide key notions about opinion, bias and diversity, and propose an interdisciplinary approach when managing them. Our basic tenet is that diversity should be seen as an asset rather than as a problem to be avoided a priori.
Identifying semantic correspondences between vocabularies is a fundamental step towards enabling ... more Identifying semantic correspondences between vocabularies is a fundamental step towards enabling interoperability among them. In this paper we report the results of a matching experiment we conducted between two large scale knowledge organization systems, i.e. NALT and LCSH. We show that, even if there is still large scope for improvements, automatic tools can significantly reduce the time necessary at finding and validating correspondences.
The physical and virtual dimensions of life are becoming more and more deeply interwoven. Society... more The physical and virtual dimensions of life are becoming more and more deeply interwoven. Society is merging with technology, giving rise to a global socio-technical ecosystem. In a society comprising people and machines as actors we often see people-to-people interactions mediated by machine and machine-to-machine interaction mediated by people. The speed and scale of this change and the differences in culture, language and interests make the problem of establishing effective means of communication and coordination increasingly challenging. Our vision, embodied in the SmartSociety project , is that a new generation of systems, hybrid (i.e., including humans and artificial peers, as well as social groups), distributed, open and large-scale, is needed to tackle these issues. In such systems, multitudes of heterogeneous peers will produce and handle massive amounts of data; peers will join/leave the system following unpredictable patterns with no central coordination and will interope...
In this paper we report our work on the implementation of a semantic geocatalogue for the spatial... more In this paper we report our work on the implementation of a semantic geocatalogue for the spatial data infrastructure (SDI) of the Trentino region, Italy.
World Academy of Science, Engineering and Technology, International Journal of Social, Behavioral, Educational, Economic, Business and Industrial Engineering, Jan 14, 2015
Abstract. Designing new-generation diversity-aware tools that face up to the emerging complexity ... more Abstract. Designing new-generation diversity-aware tools that face up to the emerging complexity in knowledge is one of the biggest research challenges in recent years. In this paper, we provide key notions about opinion, bias and diversity, and propose an interdisciplinary approach when managing them. Our basic tenet is that diversity should be seen as an asset rather than as a problem to be avoided a priori.
In representing the shared view of all the people involved, building a Knowledge Organization Sys... more In representing the shared view of all the people involved, building a Knowledge Organization System (KOS) from scratch is extremely costly, and it is therefore fundamental to reuse existing resources. This can be done by progressively extending the KOS with knowledge coming from similar KOS and by promoting interoperability among them. The linked data initiative is indeed fostering people to share and integrate their datasets into a giant network of interconnected resources. This enables different applications to interoperate and share their data. However, the integration should take into account the purpose of the datasets and make explicit the semantics. In fact, the difference in the purpose is reflected in the difference in the semantics. With this paper we (a) highlight the potential problems that may arise by not taking into account purpose and semantics, (b) make clear how the difference in the purpose is reflected in totally different semantics and (c) provide an algorithm ...
The minimal mapping between two lightweight ontologies contains that minimal subset of mapping el... more The minimal mapping between two lightweight ontologies contains that minimal subset of mapping elements such that all the others can be efficiently computed from them. They have clear advantages in visualization and user interaction since they are the minimal amount of information that needs to be dealt with. They make the work of the user much easier, faster and less error prone. Experiments on our proposed algorithm to compute them demonstrate a substantial improvement both in run-time and number of elements found.
Given two classifications, or lightweight ontologies, we compute the minimal mapping, namely the ... more Given two classifications, or lightweight ontologies, we compute the minimal mapping, namely the subset of all possible correspondences, called mapping elements, between them such that i) all the others can be computed from them in time linear in the size of the input ontologies, and ii) none of them can be dropped without losing property i). In this paper we provide a formal definition of minimal mappings and define a time efficient computation algorithm which minimizes the number of comparisons between the nodes of the two input ontologies. The experimental results show a substantial improvement both in the computation time and in the number of mapping elements which need to be handled.
Evaluating and comparing different ontology matching techniques is a complex multifaceted problem... more Evaluating and comparing different ontology matching techniques is a complex multifaceted problem. Currently, diverse golden standards and various practices are used for evaluations. In this paper we show that, by following certain rules, the quality of the evaluations can be significantly improved, particularly in regard to the accuracy of precision and recall measures obtained.
Designing new-generation diversity-aware tools that face up to the emerging complexity in knowled... more Designing new-generation diversity-aware tools that face up to the emerging complexity in knowledge is one of the biggest research challenges in recent years. In this paper, we provide key notions about opinion, bias and diversity, and propose an interdisciplinary approach when managing them. Our basic tenet is that diversity should be seen as an asset rather than as a problem to be avoided a priori.
Identifying semantic correspondences between vocabularies is a fundamental step towards enabling ... more Identifying semantic correspondences between vocabularies is a fundamental step towards enabling interoperability among them. In this paper we report the results of a matching experiment we conducted between two large scale knowledge organization systems, i.e. NALT and LCSH. We show that, even if there is still large scope for improvements, automatic tools can significantly reduce the time necessary at finding and validating correspondences.
The physical and virtual dimensions of life are becoming more and more deeply interwoven. Society... more The physical and virtual dimensions of life are becoming more and more deeply interwoven. Society is merging with technology, giving rise to a global socio-technical ecosystem. In a society comprising people and machines as actors we often see people-to-people interactions mediated by machine and machine-to-machine interaction mediated by people. The speed and scale of this change and the differences in culture, language and interests make the problem of establishing effective means of communication and coordination increasingly challenging. Our vision, embodied in the SmartSociety project , is that a new generation of systems, hybrid (i.e., including humans and artificial peers, as well as social groups), distributed, open and large-scale, is needed to tackle these issues. In such systems, multitudes of heterogeneous peers will produce and handle massive amounts of data; peers will join/leave the system following unpredictable patterns with no central coordination and will interope...
In this paper we report our work on the implementation of a semantic geocatalogue for the spatial... more In this paper we report our work on the implementation of a semantic geocatalogue for the spatial data infrastructure (SDI) of the Trentino region, Italy.
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