{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,19]],"date-time":"2026-02-19T18:24:15Z","timestamp":1771525455338,"version":"3.50.1"},"reference-count":60,"publisher":"Association for Computing Machinery (ACM)","issue":"1","license":[{"start":{"date-parts":[[2019,3,29]],"date-time":"2019-03-29T00:00:00Z","timestamp":1553817600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"funder":[{"DOI":"10.13039\/501100001809","name":"The National Nature Science Foundation of China","doi-asserted-by":"crossref","award":["861136003, 61621091, 61673237"],"award-info":[{"award-number":["861136003, 61621091, 61673237"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100017582","name":"Beijing National Research Center for Information Science and Technology","doi-asserted-by":"crossref","award":["20031887521"],"award-info":[{"award-number":["20031887521"]}],"id":[{"id":"10.13039\/501100017582","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Tsinghua University - Tencent Joint Laboratory for Internet Innovation Technology"},{"name":"The National Key Research and Development Program of China","award":["2017YFE0112300"],"award-info":[{"award-number":["2017YFE0112300"]}]}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["Proc. ACM Interact. Mob. Wearable Ubiquitous Technol."],"published-print":{"date-parts":[[2019,3,29]]},"abstract":"<jats:p>Cross-domain recommendation is a typical solution for data sparsity and cold start issue in the field of location recommendation. Specifically, data of an auxiliary domain is leveraged to improve the recommendation of the target domain. There is a typical scenario that two interaction domains (location based check-in service, for example) combine data to perform the cross-domain location recommendation task. Existing approaches are based on the assumption that the interaction data from the auxiliary domain can be directly shared across domains. However, such an assumption is not reasonable, since in the real world those domains may be operated by different companies. Therefore, directly sharing raw data may violate business privacy policy and increase the risk of privacy leakage since the user-location interaction records are very sensitive.<\/jats:p>\n          <jats:p>In this paper, we propose a framework named privacy-preserving cross-domain location recommendation which works in two stages. First, for the interaction data from the auxiliary domain, we adopt a differential privacy based protection mechanism to hide the real locations of each user to meet the criterion of differential privacy. Then we share the protected user-location interaction to the target domain. Second, we develop a new method of Confidence-aware Collective Matrix Factorization (CCMF) to effectively exploit the transferred interaction data. To verify its efficacy, we collect two real-world datasets suitable for the task. Extensive experiments demonstrate that our proposed framework achieves the best performance compared with the state-of-the-art baseline methods. We further demonstrate that our method can alleviate the data sparsity issue significantly while protecting users' location privacy.<\/jats:p>","DOI":"10.1145\/3314398","type":"journal-article","created":{"date-parts":[[2019,4,2]],"date-time":"2019-04-02T11:57:40Z","timestamp":1554206260000},"page":"1-21","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":24,"title":["Privacy-preserving Cross-domain Location Recommendation"],"prefix":"10.1145","volume":"3","author":[{"given":"Chen","family":"Gao","sequence":"first","affiliation":[{"name":"Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chao","family":"Huang","sequence":"additional","affiliation":[{"name":"Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yue","family":"Yu","sequence":"additional","affiliation":[{"name":"Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huandong","family":"Wang","sequence":"additional","affiliation":[{"name":"Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yong","family":"Li","sequence":"additional","affiliation":[{"name":"Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Depeng","family":"Jin","sequence":"additional","affiliation":[{"name":"Beijing National Research Center for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2019,3,29]]},"reference":[{"key":"e_1_2_1_1_1","doi-asserted-by":"publisher","DOI":"10.1145\/2623330.2623361"},{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1145\/2508859.2516735"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1145\/2792838.2800173"},{"key":"e_1_2_1_4_1","volume-title":"UbiComp Workshop.","author":"Bryce Ciaran","year":"2007"},{"key":"e_1_2_1_5_1","doi-asserted-by":"publisher","DOI":"10.1109\/SP.2011.40"},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.1145\/3269206.3271743"},{"key":"e_1_2_1_7_1","doi-asserted-by":"crossref","unstructured":"Konstantinos Chatzikokolakis Ehab Elsalamouny and Catuscia Palamidessi. 2017. Efficient utility improvement for location privacy. (2017) 308--328.  Konstantinos Chatzikokolakis Ehab Elsalamouny and Catuscia Palamidessi. 2017. Efficient utility improvement for location privacy. (2017) 308--328.","DOI":"10.1515\/popets-2017-0051"},{"key":"e_1_2_1_8_1","doi-asserted-by":"crossref","unstructured":"Chaochao Chen Ziqi Liu Peilin Zhao Zhou Jun and Li Xiaolong. 2018. Privacy Preserving Point-of-Interest Recommendation Using Decentralized Matrix Factorization. In AAAI.  Chaochao Chen Ziqi Liu Peilin Zhao Zhou Jun and Li Xiaolong. 2018. Privacy Preserving Point-of-Interest Recommendation Using Decentralized Matrix Factorization. In AAAI.","DOI":"10.1609\/aaai.v32i1.11244"},{"key":"e_1_2_1_9_1","doi-asserted-by":"publisher","DOI":"10.1145\/2988450.2988454"},{"key":"e_1_2_1_10_1","doi-asserted-by":"publisher","DOI":"10.1109\/ICDMW.2011.57"},{"key":"e_1_2_1_11_1","doi-asserted-by":"publisher","DOI":"10.1145\/3161411"},{"key":"e_1_2_1_12_1","doi-asserted-by":"publisher","DOI":"10.1145\/2063212.2063219"},{"key":"e_1_2_1_13_1","doi-asserted-by":"crossref","unstructured":"Cynthia Dwork. 2008. Differential privacy: A survey of results. In TAMC. 1--19.   Cynthia Dwork. 2008. Differential privacy: A survey of results. In TAMC. 1--19.","DOI":"10.1007\/978-3-540-79228-4_1"},{"key":"e_1_2_1_14_1","doi-asserted-by":"crossref","unstructured":"Chen Gao Xiangnan He Dahua Gan Xiangning Chen Fuli Feng Yong Li Tat-Seng Chua and Depeng Jin. 2019. Neural Multi-Task Recommendation from Multi-Behavior Data. In ICDE.  Chen Gao Xiangnan He Dahua Gan Xiangning Chen Fuli Feng Yong Li Tat-Seng Chua and Depeng Jin. 2019. Neural Multi-Task Recommendation from Multi-Behavior Data. In ICDE.","DOI":"10.1109\/ICDE.2019.00140"},{"key":"e_1_2_1_15_1","doi-asserted-by":"publisher","DOI":"10.1145\/2507157.2507182"},{"key":"e_1_2_1_16_1","doi-asserted-by":"publisher","DOI":"10.1145\/2396761.2398477"},{"key":"e_1_2_1_17_1","doi-asserted-by":"publisher","DOI":"10.1145\/3038912.3052569"},{"key":"e_1_2_1_18_1","doi-asserted-by":"publisher","DOI":"10.1145\/2911451.2911489"},{"key":"e_1_2_1_19_1","doi-asserted-by":"publisher","DOI":"10.1145\/2071880.2071884"},{"key":"e_1_2_1_20_1","doi-asserted-by":"publisher","DOI":"10.1145\/1315245.1315266"},{"key":"e_1_2_1_21_1","unstructured":"Jingyu Hua Chang Xia and Sheng Zhong. 2015. Differentially Private Matrix Factorization.. In IJCAI. 1763--1770.   Jingyu Hua Chang Xia and Sheng Zhong. 2015. Differentially Private Matrix Factorization.. In IJCAI. 1763--1770."},{"key":"e_1_2_1_22_1","doi-asserted-by":"publisher","DOI":"10.1109\/ICTAI.2011.184"},{"key":"e_1_2_1_23_1","doi-asserted-by":"publisher","DOI":"10.1109\/BigDataCongress.2017.16"},{"key":"e_1_2_1_24_1","doi-asserted-by":"publisher","DOI":"10.1145\/2939672.2939767"},{"key":"e_1_2_1_25_1","doi-asserted-by":"publisher","DOI":"10.1145\/2968219.2971405"},{"key":"e_1_2_1_26_1","unstructured":"Ninghui Li Tiancheng Li and Suresh Venkatasubramanian. 2007. t-closeness: Privacy beyond k-anonymity and l-diversity. In ICDE. 106--115.  Ninghui Li Tiancheng Li and Suresh Venkatasubramanian. 2007. t-closeness: Privacy beyond k-anonymity and l-diversity. In ICDE. 106--115."},{"key":"e_1_2_1_27_1","doi-asserted-by":"publisher","DOI":"10.1145\/2766462.2767722"},{"key":"e_1_2_1_28_1","doi-asserted-by":"publisher","DOI":"10.1145\/2623330.2623638"},{"key":"e_1_2_1_29_1","doi-asserted-by":"publisher","DOI":"10.1145\/3182166"},{"key":"e_1_2_1_30_1","first-page":"1778","article-title":"Personalized Tour Recommendation Based on User Interests and Points of Interest Visit Durations","volume":"15","author":"Lim Kwan Hui","year":"2015","journal-title":"IJCAI"},{"key":"e_1_2_1_31_1","doi-asserted-by":"publisher","DOI":"10.1145\/2684822.2685322"},{"key":"e_1_2_1_32_1","doi-asserted-by":"publisher","DOI":"10.1109\/ICDE.2006.1"},{"key":"e_1_2_1_33_1","doi-asserted-by":"publisher","DOI":"10.1145\/1557019.1557090"},{"key":"e_1_2_1_34_1","unstructured":"Andriy Mnih and Ruslan R Salakhutdinov. 2008. Probabilistic matrix factorization. In NIPS. 1257--1264.   Andriy Mnih and Ruslan R Salakhutdinov. 2008. Probabilistic matrix factorization. In NIPS. 1257--1264."},{"key":"e_1_2_1_35_1","doi-asserted-by":"publisher","DOI":"10.1109\/SP.2008.33"},{"key":"e_1_2_1_36_1","doi-asserted-by":"publisher","DOI":"10.1109\/SocialCom-PASSAT.2012.70"},{"key":"e_1_2_1_37_1","doi-asserted-by":"publisher","DOI":"10.1109\/WI.2005.117"},{"key":"e_1_2_1_38_1","doi-asserted-by":"publisher","DOI":"10.1109\/PerComW.2012.6197582"},{"key":"e_1_2_1_39_1","doi-asserted-by":"publisher","DOI":"10.1145\/2872427.2883002"},{"key":"e_1_2_1_40_1","doi-asserted-by":"publisher","DOI":"10.1145\/2660460.2660485"},{"key":"e_1_2_1_41_1","doi-asserted-by":"publisher","DOI":"10.1145\/371920.372071"},{"key":"e_1_2_1_42_1","unstructured":"Peter Andrew Shaw Mateusz Andrzej Mikusz Petteri Tapio Nurmi and Nigel Andrew Justin Davies. 2018. Tacita-A Privacy Preserving Public Display Personalisation Service. IMWUT (2018).  Peter Andrew Shaw Mateusz Andrzej Mikusz Petteri Tapio Nurmi and Nigel Andrew Justin Davies. 2018. Tacita-A Privacy Preserving Public Display Personalisation Service. IMWUT (2018)."},{"key":"e_1_2_1_43_1","doi-asserted-by":"publisher","DOI":"10.1145\/2382196.2382261"},{"key":"e_1_2_1_44_1","doi-asserted-by":"publisher","DOI":"10.1145\/1866919.1866936"},{"key":"e_1_2_1_45_1","doi-asserted-by":"publisher","DOI":"10.1145\/1401890.1401969"},{"key":"e_1_2_1_46_1","doi-asserted-by":"publisher","DOI":"10.1142\/S0218488502001648"},{"key":"e_1_2_1_47_1","doi-asserted-by":"publisher","DOI":"10.1145\/3264948"},{"key":"e_1_2_1_48_1","doi-asserted-by":"crossref","unstructured":"Huandong Wang Chen Gao Yong Li Gang Wang Depeng Jin and Jingbo Sun. 2018. De-anonymization of mobility trajectories: Dissecting the gaps between theory and practice. In NDSS.  Huandong Wang Chen Gao Yong Li Gang Wang Depeng Jin and Jingbo Sun. 2018. De-anonymization of mobility trajectories: Dissecting the gaps between theory and practice. In NDSS.","DOI":"10.14722\/ndss.2018.23211"},{"key":"e_1_2_1_49_1","doi-asserted-by":"publisher","DOI":"10.1145\/3132847.3132998"},{"key":"e_1_2_1_50_1","doi-asserted-by":"publisher","DOI":"10.1145\/2525314.2525357"},{"key":"e_1_2_1_51_1","doi-asserted-by":"publisher","DOI":"10.1145\/3077136.3080786"},{"key":"e_1_2_1_52_1","unstructured":"Toby Xu and Ying Cai. 2008. Exploring historical location data for anonymity preservation in location-based services. In INFOCOM. 547--555.  Toby Xu and Ying Cai. 2008. Exploring historical location data for anonymity preservation in location-based services. In INFOCOM. 547--555."},{"key":"e_1_2_1_53_1","doi-asserted-by":"publisher","DOI":"10.1145\/1653662.1653704"},{"key":"e_1_2_1_54_1","doi-asserted-by":"publisher","DOI":"10.1145\/3097983.3098094"},{"key":"e_1_2_1_55_1","doi-asserted-by":"publisher","DOI":"10.1145\/2814575"},{"key":"e_1_2_1_56_1","doi-asserted-by":"publisher","DOI":"10.1145\/2481492.2481505"},{"key":"e_1_2_1_57_1","doi-asserted-by":"publisher","DOI":"10.1145\/2009916.2009962"},{"key":"e_1_2_1_58_1","doi-asserted-by":"publisher","DOI":"10.1145\/2484028.2484030"},{"key":"e_1_2_1_59_1","doi-asserted-by":"publisher","DOI":"10.1145\/2684822.2697033"},{"key":"e_1_2_1_60_1","doi-asserted-by":"crossref","first-page":"236","DOI":"10.1609\/aaai.v24i1.7577","article-title":"Collaborative Filtering Meets Mobile Recommendation: A User-Centered Approach","volume":"10","author":"Zheng Vincent Wenchen","year":"2010","journal-title":"AAAI"}],"container-title":["Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/3314398","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/dl.acm.org\/doi\/pdf\/10.1145\/3314398","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,6,17]],"date-time":"2025-06-17T23:53:30Z","timestamp":1750204410000},"score":1,"resource":{"primary":{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/3314398"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,3,29]]},"references-count":60,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2019,3,29]]}},"alternative-id":["10.1145\/3314398"],"URL":"https:\/\/doi.org\/10.1145\/3314398","relation":{},"ISSN":["2474-9567"],"issn-type":[{"value":"2474-9567","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,3,29]]},"assertion":[{"value":"2018-08-01","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2019-01-01","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2019-03-29","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}