Heimdall: A Privacy-Respecting Implicit Preference Collection Framework
Heimdall: A Privacy-Respecting Implicit Preference Collection Framework
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Heimdall:尊重隐私的隐式偏好收集框架
DOI:
10.1145/3081333.3081334
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Prakash, Atul
中科院分区:
文献类型:
--
作者:
Rahmati, Amir;Fernandes, Earlence;Eykholt, Kevin;Chen, Xinheng;Prakash, Atul
Many of the everyday decisions a user makes rely on the suggestions of online recommendation systems. These systems amass implicit (e.g.,location, purchase history, browsing history) and explicit (e.g.,reviews, ratings) feedback from multiple users, produce a general consensus, and provide suggestions based on that consensus. However, due to privacy concerns, users are uncomfortable with implicit data collection, thus requiring recommendation systems to be overly dependent on explicit feedback. Unfortunately, users do not frequently provide explicit feedback. This hampers the ability of recommendation systems to provide high-quality suggestions. We introduce Heimdall, the first privacy-respecting implicit preference collection framework that enables recommendation systems to extract user preferences from their activities in a privacy respecting manner. The key insight is to enable recommendation systems to run a collector on a user's device and precisely control the information a collector transmits to the recommendation system back-end. Heimdall introduces immutable blobs as a mechanism to guarantee this property. We implemented Heimdall on the Android platform and wrote three example collectors to enhance recommendation systems with implicit feedback. Our performance results suggest that the overhead of immutable blobs is minimal, and a user study of 166 participants indicates that privacy concerns are significantly less when collectors record only specific information--a property that Heimdall enables.
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DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
AwadNaveen Farag;S. KrishnanM.
通讯作者:
S. KrishnanM.
DOI:
--
发表时间:
2016
期刊:
ACM Workshop on Hot Topics in Networks
影响因子:
--
作者:
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H. Madhyastha
DOI:
--
发表时间:
2015
期刊:
影响因子:
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作者:
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通讯作者:
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影响因子:
4.6
作者:
de Fortuny, Enric Junque;Martens, David;Provost, Foster
通讯作者:
Provost, Foster