C. Sikora

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Query formulation and reformulation is recognized as one of the most difficult tasks that users in information retrieval systems are asked to perform. This study investigated the use of two different techniques for supporting query reformulation in interactive information retrieval: relevance feedback and Local Context Analysis, both implemented as(More)
We report on the progressive investigation of techniques for supporting interactive query reformulation in the TREC Interactive Track task. Two major issues were explored over four successive years: various methods of term suggestion; and, interface design to support different system functionalities. Each year's results led to the following year's(More)
The goal of the Rutgers TREC-6 Interactive Track study was to compare the performance and usability of a system offering positive relevance feedback with one offering positive and negative relevance feedback. Our hypothesis was that the latter system would better support the aspect identification task than the former. Although aspectual recall was higher(More)
We present results of a study comparing two different interactive information retrieval systems: one which supports positive relevance feedback as a term-suggestion device; the other which supports both positive and negative relevance feedback in this same context. The purpose of the study was to investigate the effectiveness and usability of a specific(More)
We compared two different interfaces to the InQuery IR system with respect to their support for the TREC-9 Interactive Track Question-Answering task. One interface presented search results as a ranked list of document titles (displayed ten at one time), with the text of one document (the first, or any selected one) displayed in a scrollable window. The(More)
and reproduction in any medium, provided the original work is properly cited. Objective We developed early warning algorithms using data from ARTSSN and used them to detect signatures of potential pandemics and provide regular weekly forecasts on influenza trends in Alberta during 2012-2014. Introduction Standardized electronic pre-diagnostic information is(More)
We report on the progressive investigation of techniques for supporting interactive query reformulation in the TREC Interactive Track. Two major issues were explored over four successive years: methods of term suggestion; and, interface design to support di€erent system functionalities. Each year's results led to the following year's investigation, with(More)
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