A wiki system is a typical Web 2.0 application that provides a bi-directional platform for users to collaborate and share much useful information online.Unfortunately,computers cannot well understand the wiki pages in...A wiki system is a typical Web 2.0 application that provides a bi-directional platform for users to collaborate and share much useful information online.Unfortunately,computers cannot well understand the wiki pages in plain text.The user-generated geographical content via wiki systems cannot be manipulated properly and efficiently unless the geographical semantics is explicitly represented.In this paper,a geographical semantic wiki system,Geo-Wiki,is introduced to solve this problem.Geo-Wiki is a semantic geographical knowledge-sharing web system based on geographical ontologies so that computers can parse and storage the multi-source geographical knowledge.Moreover,Geo-Wiki mashed up with map services enriches the representation and helps users to find spatial distribution patterns,and thus can serve geospatial decision-making by customizing the Google Maps APIs.展开更多
Three decades of vulnerability research have generated a complex and growing body of knowledge.The concept of vulnerability,as well as its implementation in vulnerability assessments,is used in various disciplines and...Three decades of vulnerability research have generated a complex and growing body of knowledge.The concept of vulnerability,as well as its implementation in vulnerability assessments,is used in various disciplines and contexts.Correspondingly,a multitude of ideas and frameworks about how to conceptualize and measure vulnerability exists.To provide a structured representation of vulnerability,we have set up an ontology-based semantic wiki for reviewing and representing vulnerability assessments(www.vuwiki.org).Based on a survey of 55 vulnerability assessment studies,we first developed an ontology as an explicit reference system for describing vulnerability assessments.The ontology was then implemented in a semantic wiki which allows for the classification and annotation of vulnerability assessment.The resulting semantic wiki,Vu Wiki,does not aim at‘‘synthesizing’’a holistic and overarching model of vulnerability,but at(1)providing—both scientists and practitioners—with a uniform ontology as a reference system;(2)providing easy and structured access to the knowledge field of vulnerability assessments with the possibility for any user to retrieve assessments using specific research criteria;and(3)serving as a collaborative knowledge platform that allows for the active participation of those generating and using the knowledge represented in the vulnerability wiki.展开更多
基金supported by the National Hi-Tech Research and Develop-ment Program of China("863"Project)(Grant No.2007AA120502)the National Key Technologies Research and Development Program of China(Grant Nos.2008BAJ11B04,2006BAJ14B04)the National Natural Science Foundation of China(Grant Nos.40701134,40771171,40928001)
文摘A wiki system is a typical Web 2.0 application that provides a bi-directional platform for users to collaborate and share much useful information online.Unfortunately,computers cannot well understand the wiki pages in plain text.The user-generated geographical content via wiki systems cannot be manipulated properly and efficiently unless the geographical semantics is explicitly represented.In this paper,a geographical semantic wiki system,Geo-Wiki,is introduced to solve this problem.Geo-Wiki is a semantic geographical knowledge-sharing web system based on geographical ontologies so that computers can parse and storage the multi-source geographical knowledge.Moreover,Geo-Wiki mashed up with map services enriches the representation and helps users to find spatial distribution patterns,and thus can serve geospatial decision-making by customizing the Google Maps APIs.
文摘Three decades of vulnerability research have generated a complex and growing body of knowledge.The concept of vulnerability,as well as its implementation in vulnerability assessments,is used in various disciplines and contexts.Correspondingly,a multitude of ideas and frameworks about how to conceptualize and measure vulnerability exists.To provide a structured representation of vulnerability,we have set up an ontology-based semantic wiki for reviewing and representing vulnerability assessments(www.vuwiki.org).Based on a survey of 55 vulnerability assessment studies,we first developed an ontology as an explicit reference system for describing vulnerability assessments.The ontology was then implemented in a semantic wiki which allows for the classification and annotation of vulnerability assessment.The resulting semantic wiki,Vu Wiki,does not aim at‘‘synthesizing’’a holistic and overarching model of vulnerability,but at(1)providing—both scientists and practitioners—with a uniform ontology as a reference system;(2)providing easy and structured access to the knowledge field of vulnerability assessments with the possibility for any user to retrieve assessments using specific research criteria;and(3)serving as a collaborative knowledge platform that allows for the active participation of those generating and using the knowledge represented in the vulnerability wiki.
