UTCS Colloquium-Ilya Mironov/Microsoft Research Silicon Valley: "Building Privacy into the Netflix Prize Contenders" ACES 2.302 Thursday, April 30, 2009 3:30 p.m.
Type of Talk: UTCS Colloquium
on: Ilya Mironov/Microsoft Research Silicon Valley
nbsp; Thursday, April 30, 2009 3:30 p.m.
Host: Vitaly Shmatikov
Talk Title: &quo
t;Building Privacy into the Netflix Prize Contenders"
A recommender system based on collaborative filtering is a dou
ble-edged sword. By aggregating and processing preferences of multiple user
s it may provide relevant recommendations, serving an important business p
urpose. On the flip side, a recommender system is a potential source of le
akage of private information shared by its users.
In the talk we
will define differential privacy for recommender systems and briefly surve
y leading approaches in the Netflix Prize competition. We will demonstrate
how these approaches can be adapted to provide differential privacy, witho
ut significantly degrading their accuracy.
Joint work with Fran
k McSherry, Microsoft Research.
Ilya Mironov is a
researcher at Microsoft Research, Silicon Valley Campus. He works in the
areas of cryptography, cryptanalysis, and privacy of statistical database
s. Ilya received his PhD from Stanford in 2003, advised by Dan Boneh. In h
is thesis he cryptanalyzed the popular RC4 stream cipher modeling it as a c
ard shuffling scheme.
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