My research spans the areas of Human-Computer Interaction and Information Science, with a focus on the World Wide Web. In particular, I am interested in using a mixture of qualitative and quantitative data collection techniques to better understand how users interact with their web browsers to find information on the Web. My Ph.D. dissertation, entitled “An Examination of User Behaviour During Web Information Tasks”, explored the types of tasks in which people engage on the Web and how people use their web browsers to complete these tasks.

Themes prevalent in my research include understanding the characteristics of web information tasks, including monitoring as an activity within these tasks; using implicit measures to infer user interest, task, and goals; studying novel web browser tools and functionality; and using a mixed-methodology approach to study user behaviour on the Web.

Refereed Journal Articles & Book Chapters

Hawkey, K. and Kellar, M. (2008). Recommendations for Reporting Web Usage Studies. In B. J. Jansen, A. Spink & I. Itaksa (Eds.), Handbook of Web log analysis. Hershey, PA: IGI. 181-205. Hershey, PA: IGI.

Kellar, M., Hawkey, K., Inkpen, K.M., and Watters, C. (2008). Challenges of Capturing Natural Web-based User Behaviours. International Journal of Human Computer Interaction. 24(4): 385 - 409.

Kellar, M., Watters, C., and Shepherd, M. (2007). A Field Study Characterizing Web-based Information-Seeking Tasks. Journal of the American Society for Information Science and Technology. 58(7): 999 - 1018.

Tan, D.S., Gergle, D., Mandryk, R., Inkpen, K., Kellar, M., Hawkey, K. & Czerwinski, M. (2007). Using Job-Shop Scheduling Tasks for Evaluating Collocated Collaboration. Personal and Ubiquitous Computing. (The original publication is available at springer.com)

Kellar, M. , MacKay, B., Zhang, R., Watters, C., Kaufman, D. & Borwein, J. (2003). Dynamic Composition of Math Lessons. Educational Technology and Society Journal. 6(4): 100 - 111.

Refereed Conference Papers 

Full Papers 

Kamvar, M., Kellar, M., Patel, R., & Xu, Y. (2009). Computers and iPhones and Mobile Phones, oh my! A Logs-based Comparison of Search Users on Different Devices. To appear in the Proceedings of WWW 2009, Madrid, Spain.

Russell, D. M., D. Tang, M. Kellar, & Jeffries, R. (2009). Task Behaviors During Search. In the Proceedings of HICSS 2009, Big Island, HI. 

Dearman, D., Kellar, M. & Truong, K. (2008). An Examination of Daily Information Needs and Sharing Opportunities. In the Proceedings of CSCW 2008, San Diego, CA. 679 - 688.

Ziola, R., Kellar, M., & Inkpen, K. (2007). DeskJockey: Exploiting Passive Surfaces to Display Peripheral Information. In the Proceedings of INTERACT 2007, Rio de Janeiro, Brazil. 447-460.

Kellar, M., Watters, C. & Inkpen, K. (2007). An Exploration of Web-based Monitoring: Implications for Design. In the Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI 2007), San Jose, CA. 377-386.

Kellar, M., Watters, C., & Shepherd, M. (2006). A Goal-based Classification of Web Information Tasks. In the Proceedings of the Annual Meeting of the American Society for Information Science and Technology (ASIS&T 2006), Austin, TX. (CD-ROM Proceedings)

Kellar, M., Watters, C., & Shepherd, M. (2006). The Impact of Task on the Usage of Web Browser Navigation Mechanisms. In the Proceedings of Graphics Interface 2006 (GI 2006), Quebec City, Canada. 235-242.

Watters, C., Oore, S., Shepherd, M., Abouzied, A., Cox, A., Kellar, M., Kharrazi, H., Liu, F., & Otley, A. (2006). Extending the Use of Games in Health Care. In the Proceedings of the Hawaii International Conference on System Science (HICSS '06), Kauai, HI. (CD-ROM Proceedings)

Hawkey, K., Kellar, M., Reilly, D., Whalen, T., & Inkpen, K.M.(2005). The Proximity Factor: Impact of Distance on Co-located Collaboration. In the Proceedings of the ACM Conference on Supporting Group Work (GROUP 2005). Sanibel Island, FL. 31-40.

Kellar, M. , Watters, C., Duffy, J. & Shepherd, M. (2004). Effect of Task on Time Spent Reading as an Implicit Measure of Interest. In the Proceedings of the Annual Meeting of the American Society for Information Science and Technology (ASIS&T 2004), Providence, RI. 168-175.

Kellar, M. , Stern, H., Watters, C. & Shepherd, M. (2004). An Information Architecture to Support Dynamic Composition of Interactive Lessons and Reuse of Learning Objects. In Proceedings of the Hawaii International Conference on System Science (HICSS '04), Big Island, HI. (CD-ROM Proceedings)

Kellar, M. , MacKay, B., Zhang, R., Watters, C., Kaufman, D. & Borwein, J. (2003). Architecture to Support Dynamic Composition of Math Lesson Plans. In Proceedings of the ACM Symposium on Applied Computing (SAC '03), Melbourne, FL. 569 - 574.

Short Papers 

Aula, A. & Kellar, M. (2009). Multilingual Search Strategies. ACM CHI 2009 Work in Progress. Boston, MA. [Poster]

Kellar, M., & Watters, C. (2006).Using Web Browser Interactions to Predict Task. In the Proceedings of the ACM International World Wide Web Conference (WWW 2006), Edinburgh, Scotland. 843-844. [Poster (.pdf)]

Kellar, M. (2006). An Examination of User Behaviour During Web Information Tasks. In the Proceedings of the ACM CHI '06 Extended Abstracts on Human Factors in Computing Systems, Montreal, Canada. 1763 - 1766. [Doctoral Consortium: Poster (.pdf)]

MacKay, B, Kellar, M. & Watters, C. (2005). An Evaluation of Landmarks for Re-finding Information on the Web. In the Proceedings of the CHI '05 Extended Abstracts on Human Factors in Computing Systems, Portland, OR. 1609-1612. [Tech Note]

Kellar, M. , Reilly, D., Hawkey, K., Rodgers, M., MacKay, B., Dearman, D., Ha, V., MacInnes, W.J., Nunes, M., Parker, K., Whalen, T. & Inkpen, K.M. (2005). It's a Jungle Out There: Practical Considerations for Evaluation in the City. In the Proceedings of the CHI '05 Extended Abstracts on Human Factors in Computing Systems, Portland, OR. 1533 - 1536. [Poster]

Inkpen, K.M., Hawkey, K., Kellar, M., Mandryk, R.L., Parker, J.K., Reilly, D., Scott, S.D. & Whalen, T. (2005) Exploring Display Factors that Influence Co-Located Collaboration: Angle, Size, Number, and User Arrangement. In the Proceedings of HCI International 2005. Las Vegas, NV.

Kellar, M. , Watters, C. & Duffy, J. (2005). A Comparison of Motivational Factors between Game Players. In Proceedings of the Digital Games Research Association International Conference (DiGRA 2005), Vancouver, Canada, June 2005. [Short Paper]

Watters, C., Liu, F., Kharrazi, H., Oore, S., Kellar, M. & Shepherd, M. (2005). Building Classes of Entertaining Games for Health Education. In Proceedings of the Digital Games Research Association International Conference (DiGRA 2005), Vancouver, Canada, June 2005. [Short Paper]

Hawkey, K., Kellar, M. , MacKay, B., Parker, K. & Reilly, D. (2004). Designing a Visual Audience Voting System. In the Proceedings of the CHI '04 Extended Abstracts on Human Factors in Computing Systems, Vienna, Austria. 1641 - 1645. [student competition]

Refereed Workshop Papers 

Kellar, M. (2008). An overview of Web-based Monitoring: Future Directions and Challenges. Workshop on Personal Information Management: PIM 2008 at the ACM Conference on Human Factors in Computing Systems (CHI 2008), Florence, Italy.

Kellar, M & Watters, C. (2006). Exploring User Behaviour During Web Information Tasks. SIG HCI Research Symposium at the Annual Meeting of the American Society for Information Science and Technology (ASIS&T 2006), Austin, TX.

Watters, C., Oore, S., Hood, A., Kharrazi, H., Otley, A. & Kellar, M. (2006). Will Games Increase the Motivation of Children to Engage in Health Applications? SIG HCI Research Symposium at the Annual Meeting of the American Society for Information Science and Technology (ASIS&T 2006), Austin, TX.

Kellar, M. (2006). Logging IE: Barriers to Studying User Behaviour on the Web. Workshop on Logging Traces of Web Activity: The Mechanics of Data Collection at the ACM International World Wide Web Conference (WWW 2006), Edinburgh, Scotland.

Kellar, M. & Watters, C. (2005). Studying User Behaviour on the Web: Methods and Challenges. Workshop on Usage Analysis: Combining Logging and Qualitative Methods at the ACM Conference on Human Factors in Computing Systems (CHI 2006), Portland, OR.

Workshop Organization

Edmonds, K.A., Hawkey, K., Kellar, M., & Turnbull, D. (2006). Logging Traces of Web Activity: The Mechanics of Data Collection. ACM International World Wide Web Conference (WWW 2006), Edinburgh, Scotland.

Dissertation

Kellar, M. (2007). An Examination of User Behaviour during Web Information Tasks. Ph.D. Dissertation, Faculty of Computer Science, Dalhousie University, Halifax, Canada.