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- 저자 : Jabalameli, Mehdi (검색결과 2 건)
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Ontology-lexicon-based question answering over linked data
Jabalameli, Mehdi,Nematbakhsh, Mohammadali,Zaeri, Ahmad Electronics and Telecommunications Research Instit 2020 ETRI Journal Vol.42 No.2
Recently, Linked Open Data has become a large set of knowledge bases. Therefore, the need to query Linked Data using question answering (QA) techniques has attracted the attention of many researchers. A QA system translates natural language questions into structured queries, such as SPARQL queries, to be executed over Linked Data. The two main challenges in such systems are lexical and semantic gaps. A lexical gap refers to the difference between the vocabularies used in an input question and those used in the knowledge base. A semantic gap refers to the difference between expressed information needs and the representation of the knowledge base. In this paper, we present a novel method using an ontology lexicon and dependency parse trees to overcome lexical and semantic gaps. The proposed technique is evaluated on the QALD-5 benchmark and exhibits promising results.
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Do BRICS Countries Have Similar Trade Integration Patterns?
Ehsan Rasoulinezhad,Farkhondeh Jabalameli 세종대학교 경제통합연구소 2018 Journal of Economic Integration Vol.33 No.1
This study explores the similarities of trade integrations in the BRICS member countries. Using time series data from 2001 to 2015 and employing the Panel-Gravity trade model approach, we utilized the separate disaggregated trade data of manufactured goods and raw materials of each BRICS member with United Nations-defined regional groups: the African group, the Asia Pacific group, the Eastern European group, the Latin American and Caribbean group, and the Western European. The analysis results revealed that Russia’s manufactured goods and raw material trade integration based on the Heckscher–Ohlin framework with these five regional groups is not similar to that of other BRICS members following the Linder hypothesis. Furthermore, the dominance of China in total trade flows of BRICS has made the Chinese Yuan's effects on trade with partners from different groups stronger than other BRICS members' national currencies impacts. Geographical distance as a proxy for transportation cost has a weaker negative effect on the manufactured goods and raw materials trade patterns of China and India than it does on other countries, creating dissimilarity in the trade patterns of BRICS countries.
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