Centrality as a Method for the Evaluation of Semantic Resources for Disaster Risk Reduction
Clear and straightforward communication is a key aspect of all human activities related to crisis management. Since crisis management activities involve professionals from various disciplines using different terminology, clear and straightforward communication is difficult to achieve. Semantics as a...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-08-01
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| Series: | ISPRS International Journal of Geo-Information |
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| Online Access: | https://www.mdpi.com/2220-9964/6/8/237 |
| _version_ | 1818574568668790784 |
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| author | Otakar Čerba Karel Jedlička Václav Čada Karel Charvát |
| author_facet | Otakar Čerba Karel Jedlička Václav Čada Karel Charvát |
| author_sort | Otakar Čerba |
| collection | DOAJ |
| description | Clear and straightforward communication is a key aspect of all human activities related to crisis management. Since crisis management activities involve professionals from various disciplines using different terminology, clear and straightforward communication is difficult to achieve. Semantics as a broad science can help to overcome communication difficulties. This research focuses on the evaluation of available semantic resources including ontologies, thesauri, and controlled vocabularies for disaster risk reduction as part of crisis management. The main idea of the study is that the most appropriate source of broadly understandable terminology is such a semantic resource, which is accepted by—or at least connected to the majority of other resources. Important is not only the number of interconnected resources, but also the concrete position of the resource in the complex network of Linked Data resources. Although this is usually done by user experience, objective methods of resource semantic centrality can be applied. This can be described by centrality methods used mainly in graph theory. This article describes the calculation of four types of centrality methods (Outdegree, Indegree, Closeness, and Betweenness) applied to 160 geographic concepts published as Linked Data and related to disaster risk reduction. Centralities were calculated for graph structures containing particular semantic resources as nodes and identity links as edges. The results show that (with some discussed exceptions) the datasets with high values of centrality serve as important information resources, but they also include more concepts from preselected 160 geographic concepts. Therefore, they could be considered as the most suitable resources of terminology to make communication in the domain easier. The main research goal is to automate the semantic resources evaluation and to apply a well-known theoretical method (centrality) to the semantic issues of Linked Data. It is necessary to mention the limits of this study: the number of tested concepts and the fact that centralities represents just one view on evaluation of semantic resources. |
| first_indexed | 2024-12-15T00:28:17Z |
| format | Article |
| id | doaj.art-f383163316c8425893a1139529174181 |
| institution | Directory Open Access Journal |
| issn | 2220-9964 |
| language | English |
| last_indexed | 2024-12-15T00:28:17Z |
| publishDate | 2017-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | ISPRS International Journal of Geo-Information |
| spelling | doaj.art-f383163316c8425893a11395291741812022-12-21T22:42:06ZengMDPI AGISPRS International Journal of Geo-Information2220-99642017-08-016823710.3390/ijgi6080237ijgi6080237Centrality as a Method for the Evaluation of Semantic Resources for Disaster Risk ReductionOtakar Čerba0Karel Jedlička1Václav Čada2Karel Charvát3Department of Geomatics, University of West Bohemia, Plzeň 306 14, Czech RepublicDepartment of Geomatics, University of West Bohemia, Plzeň 306 14, Czech RepublicDepartment of Geomatics, University of West Bohemia, Plzeň 306 14, Czech RepublicCzech Centre for Science and Society, Praha 5, 150 00, Czech RepublicClear and straightforward communication is a key aspect of all human activities related to crisis management. Since crisis management activities involve professionals from various disciplines using different terminology, clear and straightforward communication is difficult to achieve. Semantics as a broad science can help to overcome communication difficulties. This research focuses on the evaluation of available semantic resources including ontologies, thesauri, and controlled vocabularies for disaster risk reduction as part of crisis management. The main idea of the study is that the most appropriate source of broadly understandable terminology is such a semantic resource, which is accepted by—or at least connected to the majority of other resources. Important is not only the number of interconnected resources, but also the concrete position of the resource in the complex network of Linked Data resources. Although this is usually done by user experience, objective methods of resource semantic centrality can be applied. This can be described by centrality methods used mainly in graph theory. This article describes the calculation of four types of centrality methods (Outdegree, Indegree, Closeness, and Betweenness) applied to 160 geographic concepts published as Linked Data and related to disaster risk reduction. Centralities were calculated for graph structures containing particular semantic resources as nodes and identity links as edges. The results show that (with some discussed exceptions) the datasets with high values of centrality serve as important information resources, but they also include more concepts from preselected 160 geographic concepts. Therefore, they could be considered as the most suitable resources of terminology to make communication in the domain easier. The main research goal is to automate the semantic resources evaluation and to apply a well-known theoretical method (centrality) to the semantic issues of Linked Data. It is necessary to mention the limits of this study: the number of tested concepts and the fact that centralities represents just one view on evaluation of semantic resources.https://www.mdpi.com/2220-9964/6/8/237centralityData NetworkLinked Data resourcecrisis managementsemantics |
| spellingShingle | Otakar Čerba Karel Jedlička Václav Čada Karel Charvát Centrality as a Method for the Evaluation of Semantic Resources for Disaster Risk Reduction ISPRS International Journal of Geo-Information centrality Data Network Linked Data resource crisis management semantics |
| title | Centrality as a Method for the Evaluation of Semantic Resources for Disaster Risk Reduction |
| title_full | Centrality as a Method for the Evaluation of Semantic Resources for Disaster Risk Reduction |
| title_fullStr | Centrality as a Method for the Evaluation of Semantic Resources for Disaster Risk Reduction |
| title_full_unstemmed | Centrality as a Method for the Evaluation of Semantic Resources for Disaster Risk Reduction |
| title_short | Centrality as a Method for the Evaluation of Semantic Resources for Disaster Risk Reduction |
| title_sort | centrality as a method for the evaluation of semantic resources for disaster risk reduction |
| topic | centrality Data Network Linked Data resource crisis management semantics |
| url | https://www.mdpi.com/2220-9964/6/8/237 |
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