Catpac

Catpac is a self-organizing, i.e. unsupervised, interactive activation and competition (IAC) artificial neural network used for text analysis.

{{cite web

|url=http://www.galileoco.com/Manuals/CATPAC3.pdf

|title=Catpac II User's Guide

|first=Joseph|last=Woelfel

|authorlink=Joseph Woelfel

|edition=Version 2.0

|publisher=The Galileo Company

}}{{Cite web |title=ANN MULTILINGUAL TEXT PATTERN RECOGNITION |url=http://www.galileoco.com/literature/Wolfpak10a.pdf |website=www.galileoco.com}} The program generates a multidimensional scalar output organizing words throughout the text by creating a weighted word-by-word matrix that establishes the eigenvector centralities of concepts.

{{cite conference

|last1=Egnoto|first1=M.

|last2=Nam|first2=Y.

|last3=Vishwanath|first3=A

|date=November 2010

|title=A longitudinal analysis of the newspaper coverage of cell phones

|conference=National Communication Association Conference

|location=San Francisco, CA.

}} The word-by-word matrix represents the relationship between one word and the occurrence of another.

{{cite journal

|last1=Doerfel|first1=M. L.

|last2=Barnett|first2=G. A.

|year=1999

|title=A semantic network analysis of the International Communication Association

|journal=Human Communication Research

|volume=25|number=4|pages=589–603 |doi=10.1111/j.1468-2958.1999.tb00463.x

|citeseerx=10.1.1.531.2227

}} Catpac identifies important words and patterns based on the organization of the text. This process mimics the connections between neurons in a human brain, strengthening connections through conditioning to generate a pattern of similarities among all words within a body of text.

Catpac has been used in commercial studies, in academic scholarship to investigate massive textual data sets,

{{cite journal

|last1=Chen|first1=H.

|last2=Evans|first2=C.

|last3=Battleson|first3=B.

|last4=Zubrow|first4=E.

|last5=Woelfel|first5=J.

|title=Procedures for the precise analysis of massive textual datasets

|journal=Communication & Science Journal

|date=10 October 2011

}}

{{cite journal

|last1=Doerfel|first1=M. L.

|last2=Barnett|first2=G. A.

|year=1996

|title=The use of CATPAC for textual analysis

|journal=Field Methods

|volume=8|number=2|pages=4–7 |doi=10.1177/1525822x960080020501

|s2cid=144484166

}} as a strong semantic network analysis tool,

{{cite conference

|last1=Ortega|first1=C.R.

|last2=Egnoto|first2=M.J.

|year=2011

|title=Longitudinal analysis of press coverage of violent video games: Assessing agenda-setting via semantic and LIWC analyses

|conference=NYSCA conference

}} for longitudinal analyses,

{{cite journal

|last1=Kim|first1=J.H.

|last2=Su|first2=T-Y.

|last3=Hong|first3=J.

|year=2007

|title=The influence of geopolitics and foreign policy on the U.S. and Canadian media: An analysis of newspaper coverage of Sudan's Darfur conflict

|journal=The Harvard International Journal of Press/Politics

|volume=12|number=3|pages=87–95 |doi=10.1177/1081180x07302972

|s2cid=220748200

}}

{{cite journal

|last1=Murphy|first1=P.

|last2=Maynard|first2=M.

|year=2000

|title=Framing the genetic testing issue: Discourse and cultural clashes among policy communities

|journal=Science Communication

|volume=22|number=2|pages=133–153 |doi=10.1177/1075547000022002002

|s2cid=143663868

}}

{{cite journal

|last1=Rosen|first1=D.

|last2=Woelfel|first2=J.

|last3=Krikorian|first3=D.

|last4=Barnett|first4=G.A.

|year=2003

|title=Procedures for analyses of online communities

|journal=Journal of Computer-Mediated Communication

|volume=8|number=4

}} for multilingual analyses,

{{cite conference

|last1=Evans|first1=C.

|last2=Chen|first2=H.

|last3=Battleson|first3=B.

|last4=Wölfel|first4=J.K.

|last5=Woelfel|first5=J.

|year=2008

|title=Neural networks for pattern recognition in multilingual text

|conference=International Network for Social Network Analysis (INSNA) Sunbelt conference

|location=St. Pete Beach, FL

}}

{{cite book

|last1=Evans|first1=C.

|last2=Chen|first2=H.

|last3=Battleson|first3=B.

|last4=Wölfel|first4=J.K.

|last5=Woelfel|first5=J.

|year=2010

|title=Unsupervised artificial neural networks for pattern recognition in multilingual text

|location=Amherst, NY

|publisher=RAH Press

}} as a predictor of media usage

{{cite book

|last1=Cheong|first1=P.

|last2=Hwang|first2=J.

|last3=Elbirt|first3=B.

|last4=Chen|first4=H.

|last5=Evans|first5=C.

|last6=Woelfel|first6=J

|year=2010

|chapter=Media use as a function of identity: The role of the self concept in media usage

|editor-first=M.|editor-last=Hinner

|title=Freiberger beiträge zur interkulturellen und wirtschaftskommunikation

|trans-title=A forum for general and intercultural business communication

|volume=6

|series=The interrelationship of business and communication

|pages=365–381

|location=Berlin|publisher=Peter Lang

}} and as a powerful content analysis tool.

{{cite book

|last=Krippendorff|first=K.

|year=2004

|title=Content analysis: An introduction to its methodology

|edition=2nd

|location=Thousand Oaks, CA

|publisher=SAGE Publications

}}

{{cite web

|last=Neuendorf

|first=K.

|title=Quantitative text analysis programs

|work=The Content Analysis Guidebook Online

|accessdate=26 November 2010

|url=http://academic.csuohio.edu/kneuendorf/content/cpuca/qtap.htm

|url-status=dead

|archiveurl=https://archive.today/20120701153803/http://academic.csuohio.edu/kneuendorf/content/cpuca/qtap.htm

|archivedate=1 July 2012

}}

Catpac, conceived as an improvement to simple word-count software more than 30 years ago, is currently available in windows 32 bit format.

{{reflist}}

• [https://web.archive.org/web/20120519003051/http://www.acsu.buffalo.edu/~woelfel/catpacBib.htm Bibliography of research using Catpac]

Category:Data analysis software