✦ LIBER ✦

Metrics for the scope of a collection

✍ Scribed by Robert B. Allen; Yejun Wu

Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 79 KB
Volume: 56
Category: Article
ISSN: 1532-2882
DOI: 10.1002/asi.20202

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Some collections cover many topics, while others are narrowly focused on a limited number of topics. We introduce the concept of the “scope” of a collection of documents and we compare two ways of measuring it. These measures are based on the distances between documents. The first uses the overlap of words between pairs of documents. The second measure uses a novel method that calculates the semantic relatedness to pairs of words from the documents. Those values are combined to obtain an overall distance between the documents. The main validation for the measures compared Web pages categorized by Yahoo. Sets of pages sampled from broad categories were determined to have a higher scope than sets derived from subcategories. The measure was significant and confirmed the expected difference in scope. Finally, we discuss other measures related to scope.

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