<?xml version="1.0" standalone="yes"?>
<Paper uid="N04-1029">
  <Title>Comparison of Two Interactive Search Refinement Techniques</Title>
  <Section position="1" start_page="0" end_page="0" type="abstr">
    <SectionTitle>
Abstract
</SectionTitle>
    <Paragraph position="0"> The paper presents two approaches to interactively refining user search formulations and their evaluation in the new High Accuracy Retrieval from Documents (HARD) track of TREC-12. One method consists of asking the user to select a number of sentences that may represent relevant documents, and then using the documents, whose sentences were selected for query expansion. The second method consists of showing to the user a list of noun phrases, extracted from the initial document set, and then expanding the query with the terms from the phrases selected by the user.</Paragraph>
  </Section>
class="xml-element"></Paper>