Today, there is a rapid increase of the available data because of advances in information and communications technology. Therefore, many mutually heterogeneous data sources that describe the same domain of interest exist. To facilitate the integration of these heterogeneous data sources, an ontology can be used as it enriches the knowledge of a data source by giving a detailed description of entities and their mutual relations within the domain of interest. Ontology matching is a key issue in integrating heterogeneous data sources described by ontologies as it eases the management of data coming from various sources. The ontology matching system consists of several basic matchers.To determine high-quality correspondences between entities of compared ontologies, the matching results of these basic matchers should be aggregated by an aggregation method. In this paper, a new weighted aggregation method for parallel composition of basic matchers based on genetic algorithm is presented. The evaluation has confirmed a high quality of the new aggregation method as this method has improved the process of matching two ontologies by obtaining higher confidence values of correctly found correspondences and thus increasing the quality of matching results.
This paper presents a review of electronic data exchange and Single Window concept in international trade, transport and seaports. The theoretic framework of international trade, trade facilitation, Single Window, transport sector, maritime transport and seaports is provided, as well as the definition of electronic data exchange and standards for data exchange. The time and cost (excluding tariffs) associated with documentary compliance procedure (exporting and importing a shipment of goods) are shown in order to better understand the complexity and the importance of simplifying administrative processes. The importance of stakeholder connectivity in the transport sector (with special emphasis on seaports) is demonstrated, and factors which affect the successful electronic data exchange in seaports are shown. The advantages of smoother electronic data exchange are provided through the analysis of several Single Window examples, which present regional best practices.
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