Measuring the Significance of Policy Outputs with Positive Unlabeled Learning
Identifying important policy outputs has long been of interest to political scientists. In this work, we propose a novel approach to the classification of policies. Instead of obtaining and aggregating expert evaluations of significance for a finite set of policy outputs, we use experts to identify...
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Published in | The American political science review Vol. 115; no. 1; pp. 339 - 346 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
New York, USA
Cambridge University Press
01.02.2021
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Subjects | |
Online Access | Get full text |
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Summary: | Identifying important policy outputs has long been of interest to political scientists. In this work, we propose a novel approach to the classification of policies. Instead of obtaining and aggregating expert evaluations of significance for a finite set of policy outputs, we use experts to identify a small set of significant outputs and then employ positive unlabeled (PU) learning to search for other similar examples in a large unlabeled set. We further propose to automate the first step by harvesting “seed” sets of significant outputs from web data. We offer an application of the new approach by classifying over 9,000 government regulations in the United Kingdom. The obtained estimates are successfully validated against human experts, by forecasting web citations, and with a construct validity test. |
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Bibliography: | SourceType-Scholarly Journals-1 ObjectType-Correspondence-2 content type line 14 ObjectType-Letter to the Editor-1 |
ISSN: | 0003-0554 1537-5943 |
DOI: | 10.1017/S000305542000091X |