DATE: | Thursday, Jan 22, 2009 |
TIME: | 2:45 pm |
PLACE: | Council Room (SITE 5-084) |
TITLE: | Using Committee of Classifiers and Collective Ranking Techniques to Build High-Confidence Prediction Zones for Classifying Biomedical Abstracts |
PRESENTER: | Alex Kouznetsov University of Ottawa |
ABSTRACT:
The purpose of this work is to reduce the human experts’
workload for building systematic reviews that are used in evidence-based
medicine, by applying machine learning techniques. We propose to use a
committee of classifiers to rank biomedical papers based on the predicted
relevance to the topic that is under review. Then, we select two subsets
of papers: one that represents the top and another that represents the
bottom of the ranked list. These subsets are considered zones where
abstracts are labeled with high confidence as being relevant or irrelevant
to the topic of the review. We explain how these prediction zones are
determined and how they constitute a source for workload reduction. Since
the experimental results show that prediction performance, achieved on the
prediction zones by applying proposed ML techniques, is generally on the
same level as the human prediction performance, using this approach can
lead to significant workload reduction for the human experts involved in
the systematic reviews process.
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