| Date post: | 21-Jan-2015 |
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Profiling a Person With Log Data
Jim Jansen
College of Information Sciences and Technology The Pennsylvania State University
Interested in how much descriptive information we can generate about a people by leveraging search log data.
What Did We Find Out?
We can tell quite a lot!
The State of Web Search
The Power of Search and the Web
Sources: comScore, U.S., Feb. ’06, Stanford Institute for the Quantitative Study of Society, Nov. ‘05
• Search is the top online activity
• Search drives over 7 billion monthly queries in the U.S.
• Online activity has a huge impact on people’s daily lives:– 70 minutes less with
family
– 30 minutes less TV
– 8.5 minutes less sleep
Analysis of Search Marketplace comScore Core Search Report* Aug 2009 vs. Sept 2009 Total U.S. – Home/Work/University Locations Source: comScore qSearch 2.0
Share of Searches (%)
Core Search Entity Aug-09 Sept-09
Point Change
Sep-09 vs. Aug-09
Total Core Search 100.0% 100.0% N/A Google Sites 64.6% 64.9% 0.3 Yahoo! Sites 19.3% 18.8% -0.5 Microsoft Sites 9.3% 9.4% 0.1 Ask Network 3.9% 3.9% 0.0 AOL LLC Network 3.0% 3.0% 0.0
* Based on the five major search engines including partner searches and cross-channel searches. Searches for mapping, local directory, and user-generated video sites that are not on the core domain of the five search engines are not included in the core search numbers.
Holding fairly stable over the last year or so, albeit with some Bing flux
Search Logs
• Contains the trace data recorded when a person visits the search engine, submits a query, views results, etc
• On one hand, logs have been criticized for not being rich enough (i.e., only have behaviors but not the ‘why’ factors)
• On the other hand, logs have been criticized for recording too much about us (i.e., logging a lot of personal information about a person)
search logs
How much we can learn about a person from the data
stored in search logs?
Specifically, how rich of a searcher profile can we build
of what a person is doing, of why they are doing it, and
to predict what are they going to do next?
An illustrative example
How much can we tell from a single query?
• ASIS&T is an acronym for the American Society of Information Science and Technology
• Good probability that this user is an academic, a researcher, a librarian, or a student in one of these disciplines
• Leveraging demographic information:– 57 percent female / 43 percent male probability – 66.2 percent chance works in the information science field– 55.6 percent probability this user has master’s degree
How much can we tell from a single query?
• Leveraging demographic information (cont’d):– 32.3 percent probability this user has a doctorate– 53 percent likelihood works in academia.
• Using IP, we can locate the geographical area• Based on time, could infer that:
– this person is searching for the conference’s schedule (if the query is submitted prior to the meeting) for travel
– or looking for presentations or papers from the meeting (if the query is submitted after the conference).
Theoretically, we can tell a lot!
However, with billions of queries per month, we can’t do the analysis by hand like this example.
To develop user profiles, we need automated methods.
Research Question - How complete of a profile can one develop for a Web search engine user from search log data? [(a) what the user is doing, (b) what the user is
interested in, and (c) what the user intends to do]
Specific aspects with automated methods …
Location Geographical interest Topical interest Topical complexity Content desires Commercial intent Purchase intent Potential to click on a link Gender User identification
– where the user is at – where the user is going – what the user is interested in – how motivated is the user – Info, Nav, Transactional – eCommerce related – getting ready to buy – will user click on
link - demographic targeting/personalization - specific user targeting
– IP look-up script – query term usage – tools like Open Calais – n-grams pattern analysis – binary tree, k-mans clustering – tools like MSN adLabs – session analysis – time series analysis - tools like MSN adLabs (need a whole lot of data)
A comment about user identification
we can tell a lot about a person within a group of people with search logs (i.e., behaviors) …
…identifying a particular individual is much more difficult with just search logs (probably takes ~12 – 18 months of data).
Given a group of folks who use a search engine, …
User Profiling Framework
• Classify user aspects into two levels: internal and external.
• Internal aspects refer to attributes of the users themselves.
• External aspects relate to the behavior or interest of the users.
• Interaction between internal and external aspects. Can infer external aspects from internal aspects. External aspects reflect internal aspects
Thank you!(open for questions and further discussion)
Jim Jansen
College of Information Sciences and Technology The Pennsylvania State University
Search Logs has some common fields, such as time, queries, results, etc.
We can enrich the log with additional fields.
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