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Microsoft: How to study search data without risking privacy

Posted By:Meetu Choudhary       Posted Date: June 08, 2009    Points: 10    Category: General    URL: http://www.dotnetspark.com  

Data on Internet search queries is a potential gold mine for researchers, as a glimpse into the minds of the online population. But despite efforts to keep that data anonymous, its release is a mine field for personal privacy, as evidenced by AOL's legendary 2006 "screw up."

Now some Microsoft researchers say they've come up with a way to release and study search data without risking privacy. The company is quick to add that it doesn't have any plans to release search data in this way. But if anyone else is brave enough to give it a try (Yahoo? Google?) the approach is detailed in a Microsoft paper accepted for the International World Wide Web Conference in Madrid: PDF, 10 pages.

The trick is an algorithm that produces what the researchers call a "private query click graph" that shows queries and URLs, giving weight to different URLs based on the number of users who clicked on them after making particular queries.

"While this graph is not as powerful as the actual search log, many computations can still be performed on the click graph with results similar to the actual search log, e.g., ?nding similar queries, keyword generation, and performing spell corrections," the researchers write.

For more details, visit http://www.techflash.com/microsoft/Microsoft_How_to_study_search_data_without_risking_privacy_43571287.html

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