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Dissertation Information for David Scott Dubin

NAME:
- David Scott Dubin
- (Alias) David Dubin

DEGREE:
- Ph.D.

DISCIPLINE:
- Library and Information Science

SCHOOL:
- University of Pittsburgh (USA) (1996)

ADVISORS:
- Robert Korfhage

COMMITTEE MEMBERS:
- Louise Su
- Edie Rasmussen
- Paul Munro
- Stephen Hirtle

MPACT Status: Fully Complete

Title: Structure in document browsing spaces

Abstract: This study proposes and evaluates a document analysis strategy for information retrieval with visualization interfaces. The goal of document analysis is to highlight structure that helps searchers make their own relevance judgements, rather than to shift judgements from humans to machines. Searchers can investigate that structure with tools for visualizing multidimensional data.

The structure of interest in this study is discrimination of documents into clusters. Two diagnostic measures may inform selection of document attributes for cluster discrimination: term discrimination value (TDV) and the sum of pairwise term-vector correlations. A series of experiments tests the reliability of these measures for predicting clustering tendency, as measured by proportion of elongated triples and skewness of the distribution of document dissimilarities. Term discrimination value was found to be inversely related to skewness when stopword frequencies participated in the TDV calculations, and inversely related to elongation when stopwords were excluded. Correlation sum was found to be directly related to skewness when stopword frequencies were excluded.

MPACT Scores for David Scott Dubin

A = 0
C = 6
A+C = 6
T = 0
G = 0
W = 0
TD = 0
TA = 0
calculated 2010-09-27 21:09:12

Advisors and Advisees Graph

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Students under David Scott Dubin

ADVISEES:
- None

COMMITTEESHIPS:
- Jianhua Dong - University of Illinois, Urbana-Champaign (2000)
- Qin He - University of Illinois, Urbana-Champaign (2001)
- Jun Wang - University of Illinois, Urbana-Champaign (2006)
- Bei Yu - University of Illinois, Urbana-Champaign (2006)
- Jin Ha Lee - University of Illinois, Urbana-Champaign (2008)
- Larry S. Jackson - University of Illinois, Urbana-Champaign (2009)