December 6, 2013
Dr Andreas Vlachidis from the Hypermedia Research Unit was awarded best post doctoral paper at the seventh International Conference on Metadata and Semantics Research held in Thessolaniki, Greece between November 19-22, 2013.
Dr Vlachidis presented The semantics of negation detection in archaeological grey literature – the result of his work on the FP7 European Project Ariadne.
Describing his paper, Dr Vlachidis said:
“Archaeological reports contain a great deal of information that conveys facts and findings in different ways. This kind of information is highly relevant to the research and analysis of archaeological evidence but at the same time can be a hindrance for the accurate indexing of documents with respect to positive assertions.
“The paper presents a method for adapting the biomedicine oriented negation algorithm NegEx to the context of archaeology and discusses the evaluation results of the new modified negation detection module. The performance of the module is compared against a “Gold Standard” and evaluation results are encouraging, delivering overall 89% Precision, 80% Recall and 83% F-Measure scores.
“The paper addresses limitations and future improvements of the current work and highlights the need for ontological modelling to accommodate negative assertions. It concludes that adaptation of the NegEx algorithm to the archaeology domain is feasible and that rule-based information extraction techniques are capable of identifying a large portion of negated phrases from archaeological grey literature.”
Andreas also chaired the session on Big Data and Digital Libraries in Health, Science and Technology and participated in the MUMIA Working Group.