Professional and Research Activities

Dietmar Wolfram, Ph.D.

Education

Ph.D. University of Western Ontario.
Dissertation Title: The Application of Informetrics to Information Retrieval Systems Design: A Simulation Study
M.L.I.S. University of Western Ontario.
B.Sc. (Honors) University of Western Ontario.

Areas of Research Interest

Applied informetrics
Information retrieval (IR) systems design & evaluation
Modeling and simulation of IR systems
User studies of IR systems
Technology education for information professionals

Current Projects

Modeling Web Searching Behaviors and Designing New Effective Interactions for Digital Libraries (funded by IMLS National Leadership R&D Grant) - Study Website
Visualizing Health Information Querying (funded by UWM RGI program)
Visualization of IR System Indexing Characteristics
State Digital Library Usage Evaluation
Indexing Consistency on a Large Scale

Professional Society Membership

Professional and Research Publications

Articles

Zhang, J., & Wolfram, D. (Accepted). Visual analysis of obesity-related query terms on HealthLink. Online Information Review.

Zhang, J., Wolfram, D., Wang, P., Hong, Y., & Gillis, R. (2008). Visualization of health subject analysis based on query term co-occurrences. Journal of the American Society for Information Science and Technology, 59(12), 1933-1947.

Olson, H.A., & Wolfram, D. (2008). Syntagmatic relationships and indexing consistency on a larger scale. Journal of Documentation, 64(4), 602-615.

Wolfram, D. (2008). Search characteristics in different types of Web-based IR environments: Are they the same? Information Processing & Management, 44, 1279-1292.

Wolfram, D., & Zhang, J. (2008). The influence of indexing practices and term weighting algorithms on document spaces. Journal of the American Society for Information Science and Technology, 59(1), 3-11.

Ajiferuke, I., Wolfram, D., & Famoye, F. (2006). Sample size and informetric model goodness-of-fit outcomes: A search engine log case study. Journal of Information Science, 32(3), 212-222.

Wolfram, D. (2006). Applications of SQL for informetric frequency distribution processing. Scientometrics, 67(2), 301-313.

Ajiferuke, I., & Wolfram, D. (2005). Analysis of web page image tag distribution characteristics. Information Processing & Management, 41(4), 987-1002.

Ajiferuke, I., & Wolfram, D. (2004). Modeling the characteristics of web page outlinks. Scientometrics, 59(1), 43-62.

Ajiferuke, I., & Wolfram, D. (2004). Informetric modeling of Internet search and browsing characteristics. Canadian Journal of Information and Library Science, 28(1), 1-16.

Spink, A., Jansen, B. J., Wolfram, D., & Saracevic. (2002). From e-sex to e-commerce: Web search changes. IEEE Computer Magazine, 35(3), 107-109.

Wolfram, D., & Xie, H. (2002). Traditional IR for Web users: A context for general audience digital libraries. Information Processing & Management, 38, 627-648.

Wolfram, D., & Zhang, J. (2002). An investigation of the influence of indexing exhaustivity and term distributions on a document space. Journal of the American Society for Information Science and Technology, 53(11), 943-952.

Xie, H., & Wolfram, D. (2002). State digital library usability: Contributing organizational factors. Journal of the American Society for Information Science and Technology. 53(13), 1085-1095.

Spink, A., Wolfram, D. & Jansen, B. J. & Saracevic, T. (2001). Searching the web: The public and their queries. Journal of the American Society for Information Science and Technology. 52(3), 226-234.

Zhang, J., & Wolfram, D. (2001). Visualization of term discrimination analysis. Journal of the American Society for Information Science and Technology. 52(8), 615-627.

Wolfram, D., Spink, A., Jansen, B. J. & Saracevic, T. (2001). Vox populi: The public searching of the web. Journal of the American Society for Information Science and Technology, 52(12), 1073-1074.

Buchanan, E., Xie, H., Brown, M., & Wolfram, D. (2001). A systematic study of Web-based and traditional instruction in an MLIS program: Success factors and implications for curriculum design. Journal of Education for Library and Information Science, 42(4), 274-288. (See also: Study Web site)

Wolfram, D., & Zhang, J. (2001). The impact of term indexing characteristics on a document space Canadian Journal of Information and Library Science. 26(4), 21-35.

Wolfram, D. (2000). Applications of informetrics to information retrieval research. Informing Science. 3(2), 77-82. Available: http://inform.nu/Articles/Vol3/indexv3n2.htm

Ross, N. C. M., & Wolfram, D. (2000). End-user searching on the Internet: An analysis of term pair topics submitted to the Excite search engine. Journal of the American Society for Information Science. 51(10), 949-958.

Wolfram, D. (1999). Term co-occurrence in Internet search engine queries: An analysis of the Excite data set. Canadian Journal of Information and Library Science. 24(2/3), 12-33.

Wolfram, D., & Dimitroff, A. (1998). Hypertext vs.Boolean-based searching in a bibliographic database environment: a direct comparison of searcher performance. Information Processing & Management. 34(6), 669-679.

Senkevitch, J. J., & Wolfram, D. (1997). Internetworking the urban community: A longitudinal study of approaches to introducing adult new users to electronic information resources. Library and Information Science Research19(3), 249-264.

Wolfram, D., & Dimitroff, A. (1997). Searcher performance and perceptions of performance in a hypertext bibliographic retrieval system. Journal of the American Society for Information Science. 48(12), 1142-1145.

Dimitroff, A. Volz, A., & Wolfram, D. (1996). Affective response and retrieval performance: Effect of enhanced hypertext linkage environment. Library and Information Science Research. 18(Spring), 121-132.

Wolfram, D. (1996). Inter-record linkage structure in a hypertext bibliographic retrieval system. Journal of the American Society for Information Science.46(10), 765-774.

Wolfram, D., Volz, A. & Dimitroff, A. (1996). The effect of linkage structure on retrieval performance in a hypertext-based bibliographic retrieval system. Information Processing & Management. 32(5), 529-541.

Senkevitch, J., & Wolfram, D. (1996). Assessing the effectiveness of a model for educating rural librarians in using Internet resources. Journal of Education for Library and Information Science. 37(3), 272-285.

Dimitroff, A., & Wolfram, D. (1995). Searcher response in a hypertext-based bibliographic information retrieval system. Journal of the American Society for Information Science. 46(1), 22-29.

Hakanen, E. A., & Wolfram, D. (1995). Citation relationships among international mass communication journals. Journal of Information Science, 22(3), 9-15.

Wittig, C., & Wolfram, D. (1994). A survey of networking education in North American library schools. Library Trends, 42(4), 626-637.

Senkevitch, J. J., & Wolfram, D. (1994). Equalizing access to electronic networked resources: a model for rural libraries in the United States. Library Trends, 42(4), 661-675.

Wolfram, D. (1994). Audiographics for distance education: A case study in student attitudes and perceptions. Journal of Education for Library and Information Science. 35(3), 179-186.

Wolfram, D. (1992). Information retrieval system design issues in a microcomputer-based relational DBMS environment. Microcomputers for Information Management, 9(2), 89-101.

Wolfram, D., (1992). Applying informetric characteristics of databases to IR system file design, Part I: informetric models. Information Processing & Management, 28(1), 121-133.

Wolfram, D. (1992). Applying informetric characteristics of databases to IR system design, Part II: simulation comparisons. Information Processing & Management, 28(1), 135-151.

Chu, C., & Wolfram D. (1991). A survey of the growth of Canadian research in information science. Canadian Journal of Information Science, 16(1), 12-28.

Kinnucan, M., & Wolfram, D. (1990). Direct comparison of bibliometric models. Information Processing & Management, 26(6), 777-790.

Wolfram, D., & Chu, C.M. (1989). Information science in Canada: The present record. Scientia Canadensis, 13, 110-122.

Conference Proceedings

Wolfram, D., Wang, P., & Zhang, J. (2007). Modeling web session behavior using cluster analysis: A comparison of three search settings. In A. Grove (Ed.). ASIST 2007 - Proceedings of the 2007 ASIST Annual Meeting. v. 44 CD-ROM

Wang, P., Wolfram, D., Zhang, J., Hong, N., & Wu. L. (2007). Data modeling of web transaction logs. In A. Grove (Ed.). ASIST 2007 - Proceedings of the 2007 ASIST Annual Meeting. v. 44 CD-ROM

Wolfram, D., & Olson, H.A. (2007). A Method for Comparing Large Scale Inter-indexer Consistency Using IR Modeling. In Proceedings of the 35th Annual Conference of the Canadian Association for Information Science. Available: http://www.cais-acsi.ca/proceedings/2007/wolfram_2007.pdf

Wolfram, D. (2005). Applications of SQL for informetric data analysis. In Proceedings of the 33rd Annual Conference of the Canadian Association for Information Science. Available: http://www.cais-acsi.ca/proceedings/2005/wolfram_2005.pdf

Ajiferuke, I., Wolfram, D., & Xie, H. (2004). Modelling Website Visitation and Resource Usage Characteristics by IP Address Data. In Proceedings of the 32nd Annual Conference of the Canadian Association for Information Science. Available: http://www.cais-acsi.ca/proceedings/2004/ajiferuke_2004.pdf

Wolfram, D., & Xie, H. (2001). State digital libraries: Developing systems for general audiences. In S. R. Urs, T. B. Rajashekar, K. S. Raghavan (Eds.). Proceedings of the 4th International Conference on Asian Digital Libraries (pp. 62-74), Mysore: University of Mysore.

Wolfram, D. (2000). A Query-Level Examination of End User Searching Behaviour on the Excite Search Engine. In H. Olson, (Ed.). Proceedings of the 28th Annual Conference of the Canadian Association for Information Science. Available: http://www.slis.ualberta.ca/cais2000/wolfram.htm

Buchanan, E., Brown, M., Casanova, J., Wolfram, D. & Xie, H. (2000). Web-based and traditional instruction: A systematic study of student and instructor perceptions from a graduate MLIS program. In G. Davies & C. B. Owen (Eds.). Proceedings of WebNet 2000 World Conference on the WWW and Internet (pp. 655-656).

Wolfram, D., & Xie, H. (2000). End user database searching on the Internet: An analysis of the state of Wisconsin's Badgerlink service. In M.E. Williams (Ed.), Proceedings of the 21st National Online Meeting. (pp. 503-512). Medford, NJ: Information Today,

Dimitroff, A., & Wolfram, D. (1998). Comparison of contributing factors in system affective response in a Boolean and hypertext bibliographic database environment. In E.G. Toms, D.G. Campbell, J. Dunn (Eds.), Proceedings of the 26th Annual Conference of the Canadian Association for Information Science (pp. 339-352). Toronto: CAIS.

Wolfram, D. (1996).A hybridized hypertext and Boolean retrieval model for bibliographic databases. In G. Whitney (Ed.), The Digital Revolution: Assessing the Impact on Business, Education, and Social Structures. Proceedings of the 1996 ASIS Mid-year Meeting. (pp. 130-138). Medford, NJ: Information Today, Inc.

Senkevitch, J. J., & Wolfram, D. (1995). A model for educating librarians in smaller libraries about using electronic network resources, In Culture Keepers II: Unity Through Diversity, Proceedings of the BCALA Second National Conference of African American Librarians.

Dimitroff, A., & Wolfram, D. (1993). Design considerations for hypertext-based bibliographic retrieval systems. In 1993 Proceedings of the ASIS Annual Meeting (pp. 191-198). Medford, NJ: Information Today, Inc.

Wolfram, D., Chu, C. M., & Lu, X. (1990). Growth of knowledge: bibliometric analysis using online database data. In L. Egghe & R. Rousseau (Eds.), Informetrics 89/90 (pp. 355-372). Amsterdam: Elsevier Science Publishers.

Books and Book Chapters

Wolfram, D. (2003). Applied informetrics for information retrieval research. Westport, CT: Libraries Unlimited. (Summary)

Fong, W., Senkevitch, J., & Wolfram, D. (2003). The evolution of distance learning at the school of information studies, University of Wisconsin-Milwaukee. In D. Barron (Ed.), Benchmarks in Distance Education The LIS Experience (pp. 365-372). Libraries Unlimited.

Senkevitch, J. J., & Wolfram, D. (Eds.) (1995). Rural libraries and internetworking. Metuchen, NJ: Scarecrow Press.

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