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dos Reis J.C.,Resource Center for Health Care Technologies | dos Reis J.C.,University Paris - Sud | Bonacin R.,Rua Guatemala | Bonacin R.,Center for Information Technology Renato Archer | Baranauskas M.C.C.,University of Campinas
Universal Access in the Information Society | Year: 2014

Social network services (SNSs) have brought new possibilities and challenges to the design of software environments that respect people's cultural differences. These systems may represent an opportunity for social and digital inclusion. However, search mechanisms in these systems impose serious barriers for people in the process of acquiring digital literacy. One of the barriers is the difficulty of using the adequate terms/keywords to perform content searches. This paper presents an approach to allow ordinary, non-technology proficient people to access the content of a network through the use of search parameters that make sense to them. The proposal is grounded on Semantic Web technologies (Web ontology) combined with Organizational Semiotics concepts and methods to identify the users' profile and language. A case study was conducted with the search mechanism integrated into a SNS, and a preliminary evaluation reveals the advantages and drawbacks of the approach. © 2013 Springer-Verlag Berlin Heidelberg. Source


dos Reis J.C.,Resource Center for Health Care Technologies | dos Reis J.C.,University Paris - Sud | Pruski C.,Resource Center for Health Care Technologies | Da Silveira M.,Resource Center for Health Care Technologies | Reynaud-Delaitre C.,University Paris - Sud
Journal of Biomedical Informatics | Year: 2014

Knowledge Organization Systems (KOSs) are extensively used in the biomedical domain to support information sharing between software applications. KOSs are proposed covering different, but overlapping subjects, and mappings indicate the semantic relation between concepts from two KOSs. Over time, KOSs change as do the mappings between them. This can result from a new discovery or a revision of existing knowledge which includes corrections of concepts or mappings. Indeed, changes affecting KOS entities may force the underline mappings to be updated in order to ensure their reliability over time. To tackle this open research problem, we study how mappings are affected by KOS evolution. This article presents a detailed descriptive analysis of the impact that changes in KOS have on mappings. As a case study, we use the official mappings established between SNOMED CT and ICD-9-CM from 2009 to 2011. Results highlight factors according to which KOS changes in varying degrees influence the evolution of mappings. © 2013 Elsevier Inc. Source

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