Ivelina Nikolova
ABSTRACT
This paper presents the current solutions concerning ethical and security issues in the system EVTIMA -- an environment supporting text mining of patient records (PRs) in Bulgarian. Confidentiality and anonymisation of the analysed documents are crucial from ethical point of view and are considered as leading development principles. Here we describe in detail our method for PR de-identification of PRs which uses data vocabularies, regular expressions and additional heuristics to locate the identification information. It is trained on a corpus of 197 documents and tested on 1000 documents. The algorithm works in three steps and de-identifies 97% of the personalising information. Thus it is comparable to the reported results in similar tasks in English.
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- Ethics and security in text mining of patient records in Bulgarian: the EVTIMA solution
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