toggle visibility Search & Display Options

Select All    Deselect All
 |   | 
Details
   print
  Records Links
Author (up) Vargas-Vera, M. pdf  doi
openurl 
  Title A Framework for Extraction of Relations from Text using Relational Learning and Similarity Measures Type
  Year 2015 Publication Journal Of Universal Computer Science Abbreviated Journal J. Univers. Comput. Sci.  
  Volume 21 Issue 11 Pages 1482-1495  
  Keywords Semantic Learning; Relational Learning; Similarity Measures; Semantic Web  
  Abstract Named entity recognition (NER) has been studied largely in the Information Extraction community as it is one step in the construction of an Information Extraction System. However, to extract only names without contextual information is not sufficient if we want to be able to describe facts encountered in documents, in particular, academic documents. Then, there is a need for extracting relations between entities. This task is accomplished using relational learning algorithms embedded in an Information Extraction framework. In particular, we have extended two relational learning frameworks RAPIER and FOIL. Our proposed extended frameworks are equipped with DSSim (short for Dempster-Shafer Similarity) our similarity service. Both extended frameworks were tested using an electronic newsletter consisting of news articles describing activities or events happening in an academic institution as our main application is on education.  
  Address [Vargas-Vera, Maria] Adolfo Ibanez Univ, Vinia Del Mar, Chile, Email: mvargasvera@gmail.com  
  Corporate Author Thesis  
  Publisher Graz Univ Technolgoy, Inst Information Systems Computer Media-Iicm Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0948-695x ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000368457300008 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 578  
Permanent link to this record
 

 
Author (up) Vargas-Vera, M.; Nagy, M. pdf  doi
openurl 
  Title Establishing agent trust for contradictory evidence by means of fuzzy voting model: An ontology mapping case study Type
  Year 2014 Publication Computers In Human Behavior Abbreviated Journal Comput. Hum. Behav.  
  Volume 30 Issue Pages 745-752  
  Keywords Ontology mapping; Semantic Web; Multi-agent systems; Uncertain reasoning  
  Abstract This paper introduces a novel trust assessment formalism for contradicting evidence in the context of multi-agent ontology mapping. Evidence combination using the Dempster rule tend to ignore contradictory evidence and the contemporary approaches for managing these conflicts introduce additional computation complexity i.e. increased response time of the system. On the Semantic Web, ontology mapping systems that need to interact with end users in real time cannot afford prolonged computation. In this work, we have made a step towards the formalisation of eliminating contradicting evidence, to utilise the original Dempster's combination rule without introducing additional complexity. Our proposed solution incorporates the fuzzy voting model to the Dempster-Shafer theory. Finally, we present a case study where we show how our approach improves the ontology mapping problem. (C) 2013 Elsevier Ltd. All rights reserved.  
  Address [Vargas-Vera, Maria] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Ctr Invest Informar & Telecomunicac, Vinia Del Mar, Chile, Email: maria.vargas-vera@uai.cl;  
  Corporate Author Thesis  
  Publisher Pergamon-Elsevier Science Ltd Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0747-5632 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000330090900084 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 344  
Permanent link to this record
 

 
Author (up) Vargas-Vera, M.; Nagy, M.; De Pablos, P.O. pdf  url
openurl 
  Title A Framework For Detecting And Removing Knowledge Overlaps In A Collaborative Environment: Case Of Study A Computer Configuration Problem Type
  Year 2013 Publication Journal Of Web Engineering Abbreviated Journal J. Web Eng.  
  Volume 12 Issue 5 Pages 422-438  
  Keywords Knowledge-based systems; Knowledge integration; Configuration  
  Abstract This paper presents a framework for knowledge integration based on mappings between similar concepts in constraint graphs associated to a configuration problem. In particular, the paper deals with one of the problems which could arise when performing collaborative knowledge integration, namely detecting knowledge overlaps. The solution to the overlapping problem relies on the use of matching algorithms embedded in DSSim (short for Dempster-Shafer Similarity). To illustrate the approach, a case study of a computer configuration problem is presented. The solution to the knowledge overlap problem is important as it has the promise to become an alternative approach for the current knowledge integration solutions. Through our approach the real cost of integration can be reduced as it is not necessary to invest a great amount of resources beforehand a truly integrated system can be operational.  
  Address [Vargas-Vera, Maria] Univ Adolfo Ibanez, Ctr Invest Informat, Fac Ingn & Ciencias, Vinia Del Mar, Chile, Email: maria.vargas-vera@uai.cl;  
  Corporate Author Thesis  
  Publisher Rinton Press, Inc Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1540-9589 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000324004200005 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 309  
Permanent link to this record
Select All    Deselect All
 |   | 
Details
   print

Save Citations:
Export Records: