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Sensors 2018, 18(5), 1522; https://doi.org/10.3390/s18051522

A Strategy toward Collaborative Filter Recommended Location Service for Privacy Protection

1
College of Computer Science and Technology, Harbin Engineering University, Harbin 150000, China
2
College of Information Engineering, Suihua University, Suihua 152000, China
*
Author to whom correspondence should be addressed.
Received: 20 March 2018 / Revised: 22 April 2018 / Accepted: 8 May 2018 / Published: 11 May 2018
(This article belongs to the Section Physical Sensors)
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Abstract

A new collaborative filtered recommendation strategy was proposed for existing privacy and security issues in location services. In this strategy, every user establishes his/her own position profiles according to their daily position data, which is preprocessed using a density clustering method. Then, density prioritization was used to choose similar user groups as service request responders and the neighboring users in the chosen groups recommended appropriate location services using a collaborative filter recommendation algorithm. The two filter algorithms based on position profile similarity and position point similarity measures were designed in the recommendation, respectively. At the same time, the homomorphic encryption method was used to transfer location data for effective protection of privacy and security. A real location dataset was applied to test the proposed strategy and the results showed that the strategy provides better location service and protects users’ privacy. View Full-Text
Keywords: location services; position profile; density prioritization; collaborative filter location services; position profile; density prioritization; collaborative filter
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Wang, P.; Yang, J.; Zhang, J. A Strategy toward Collaborative Filter Recommended Location Service for Privacy Protection. Sensors 2018, 18, 1522.

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