RT Journal T1 Aparameterized location privacy protection method based on two-level Anonymity A1 BI Xiao-di, LIANG Ying, SHI Hong-zhou, TIAN Hui PB JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) FD 2017-05-20 YR 2017 JF JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) JO JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) VO 52 IS 5 SP 75 DO 10.6040/j.issn.1671-9352.2.2016.203 K1 location privacy protection;#i#k#/i#-anonymity;differential privacy;location based service;privacy level LK {http://lxbwk.njournal.sdu.edu.cn/EN/article/article_2855.shtml}