Computer Science Colloquium

Temporal Dynamics and Information Retrieval

Susan T. Dumais, Microsoft Research

February 20, 2013 11:30AM
Warren Weaver Hall, 1302
251 Mercer Street
New York, NY 10012

Spring 2013 Colloquia Calendar


David Sontag


Many digital resources, like the Web, are dynamic and
ever-changing collections of information. However, most information
retrieval tools developed for interacting with Web content, such as
browsers and search engines, focus on a single static snapshot of the
information. In this talk, I will present analyses of how Web content
changes over time, how people re-visit Web pages over time, and how
re-visitation patterns are influenced by changes in user intent and
content. These results have implications for many aspects of
information retrieval and management including crawling policy,
ranking and information extraction algorithms, result presentation,
and systems evaluation. I will describe a prototype that supports
people in understanding how the information they interact with changes
over time, and new information retrieval models that incorporate
features about the temporal evolution of content to improve core
ranking. Finally, I will conclude with an overview of some general
challenges that need to be addressed to fully incorporate temporal
dynamics in information retrieval and information management systems.


Susan Dumais is a Principal Researcher and manager of the
Context, Learning and User Experience for Search (CLUES) Group at
Microsoft Research. Prior to joining Microsoft Research, she was at
Bellcore and Bell Labs for many years, where she worked on Latent
Semantic Indexing (a statistical method for concept-based retrieval),
interfaces for combining search and navigation, and organizational
impacts of new technology. Her current research focuses on user
modeling and personalization, context and information retrieval,
temporal dynamics of information, interactive retrieval, and novel
evaluation methods. She has worked closely with several Microsoft
groups (Bing, Windows Desktop Search, SharePoint Portal Server, and
Office Online Help) on search-related innovations. Susan has
published more than 200 articles in the fields of information science,
human-computer interaction, and cognitive science, and holds several
patents on novel retrieval algorithms and interfaces. Susan is also
an adjunct professor in the Information School at the University of
Washington. She is Past-Chair of ACM's Special Interest Group in
Information Retrieval (SIGIR), and serves on several editorial boards,
technical program committees, and government panels. She was elected
to the CHI Academy in 2005, an ACM Fellow in 2006, received the SIGIR
Gerard Salton Award for Lifetime Achievement in 2009, and was elected
to the National Academy of Engineering (NAE) in 2011.

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