Bridging structured and unstructured data via hybrid semantic search and interactive ontology-enhanced query formulation

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• 作者：Markus G?rtner (1)
  Andreas Rauber (1)
  Helmut Berger (2)
  
• 关键词：Semantic Web ; User interface design ; Semantic annotation ; Hybrid Semantic Search System ; Keyword ; based search ; Concept ; based search ; Ontologies
• 刊名：Knowledge and Information Systems
• 出版年：2014
• 出版时间：December 2014
• 年：2014
• 卷：41
• 期：3
• 页码：761-792
• 全文大小：2,136 KB
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• 作者单位：Markus G?rtner (1)
  Andreas Rauber (1)
  Helmut Berger (2)
  
  1. Department of Software Technology and Interactive Systems, Vienna University of Technology, Favoritenstr. 9-11/188, 1040?, Vienna, Austria
  2. max.recall Information Systems OG, Pulverturmgasse 17/3, 1090?, Vienna, Austria
  
• ISSN：0219-3116

文摘

In this paper, we identify the problems of current semantic and hybrid search systems, which seek to bridge structure and unstructured data, and propose solutions. We introduce a novel input mechanism for hybrid semantic search that combines the clean and concise input mechanisms of keyword-based search engines with the expressiveness of the input mechanisms provided by semantic search engines. This interactive input mechanism can be used to formulate ontology-aware search queries without prior knowledge of the ontology. Furthermore, we propose a system architecture for automatically fetching relevant unstructured data, complementing structured data stored in a Knowledge Base, to create a combined index. This combined index can be used to conduct hybrid semantic searches which leverage information from structured and unstructured sources. We present the reference implementation Hybrid Semantic Search System ( \(HS^3\) ), which uses the combined index to put hybrid semantic search into practice and implements the interactive ontology-enhanced keyword-based input mechanism. For demonstration purpose, we apply \(HS^3\) to the tourism domain. We present performance test results and the results of a user evaluation. Finally, we provide instructions on how to apply \(HS^3\) to arbitrary domains.