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   Jansen, Bernard J. & Pooch, Udo. (2001). "A Review of Web Searching Studies and a Framework for Future Research." [Artículo]. JASIS (Journal of the American Society for Information Science), 2001, 52(3):235-246.
URL: http://jimjansen.tripod.com/academic/pubs/wus.html      
Materias:  Estudio de usuarios 

"Research on Web searching is at an incipient stage. This aspect provides a unique opportunity to review the current state of research in the field, identify common trends, develop a methodological framework, and define terminology for future Web searching studies. In this article, the results from published studies of Web searching are reviewed to present the current state of research. The analysis of the limited Web searching studies available indicates that research methods and terminology are already diverging. A framework is proposed for future studies that will facilitate comparison of results. The advantages of such a framework are presented, and the implications for the design of Web information retrieval systems studies are discussed. Additionally, the searching characteristics of Web users are compared and contrasted with users of traditional information retrieval and online public access systems to discover if there is a need for more studies that focus predominantly or exclusively on Web searching. The comparison indicates that Web searching differs from searching in other environments."

Jansen, B. J., Spink, A., Saracevic, T. (2000). "Real life, real users, and real needs: A study and analysis of user queries on the web." [Artículo]. Information Processing & Management, 2000, 36(2):207-227.
URL: http://jimjansen.tripod.com/academic/pubs/ipm98/ipm98.html      
Materias:  Estudio de usuarios 

"We analyzed transaction logs containing 51,473 queries posed by 18,113 users of Excite, a major Internet search service. We provide data on: (i) sessions - changes in queries during a session, number of pages viewed, and use of relevance feedback, (ii) queries - the number of search terms, and the use of logic and modifiers, and (iii) terms - their rank/frequency distribution and the most highly used search terms. We then shift the focus of analysis from the query to the user to gain insight to the characteristic of the Web user. With these characteristics as a basis, we then conducted a failure analysis, identifying trends among user mistakes. We conclude with a summary of findings and a discussion of the implications of these finding."

Spink, A., Wolfram, D., Jansen, B. J. & Saracevic, T. (2000). "Searching of the web: the public and their queries." [Artículo]. JASIS (Journal of the American Society for Information Science), 2000, 52(3):226-234.
URL: http://jimjansen.tripod.com/academic/pubs/jasist2001/jasist2001.html      
Materias:  Estudio de usuarios 

"In studying actual Web searching by the public at large, we analyzed over one million Web queries by users of the Excite search engine. We found that most people use few search terms, few modified queries, view few Web pages, and rarely use advanced search features. A small number of search terms are used with high frequency, and a great many terms are unique; the language of Web queries is distinctive. Queries about recreation and entertainment rank highest. Findings are compared to data from two other large studies of Web queries. This study provides an insight into the public practices and choices in Web searching."

Jansen, B. J. (2000). "An investigation into the use of simple queries on Web IR systems." [Artículo]. Information Research, Octubre2000, 6(1):.
URL: http://jimjansen.tripod.com/academic/pubs/ir2000/ir2000.html      
Materias:  Estudio de usuarios 

"I present in this paper the results of an investigation into the effects of query structure on the results retrieved by Web-based information retrieval systems. I selected 15 queries from a transaction log of a major Web search engine. All of these 15 queries were simple queries with no advanced operators (e.g., Boolean operators, phrase operators, etc.). Utilizing these queries, I submitted them to 5 major search engines, Alta Vista, Excite, FAST Search, Infoseek, and Northern Light. The 15 queries were then modified using the various search operators supported by each of the 5 search engines. There were a total of 210 of these complex queries. The results obtained were then compared to the baseline results. There were 2,768 results returned by the set of all queries. I present the statistics from this comparison of results and discuss the analysis from various perspectives. In general, increasing the complexity of the queries had little effect on the results with a greater than a 70% overlap in results, on average. The implications of Web search engine design are discussed, as well as the directions for future research."

Jansen, B. J. & Spink, A. (2000). "Methodological approach in discovering user search patterns through Web log analysis." [Artículo]. Bulletin of the American Society for Information Science and Technology, 2000, 27(1):15-17.
URL: http://jimjansen.tripod.com/academic/pubs/asis1500.html      
Materias:  Estudio de usuarios 

"This article details the methodology and analysis used in the Excite Research Project, a currently three year and still on-going research project to study the nature of searching on a major Web search engine. The article begins with general information concerning the Web, the unique and fascinating insights into searchers on the Web, and the Web's impact. The major thrust of the article concerns the structure and approached utilized to analyze the data sets so far. We end with conclusions and expectation for future Web studies."

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