Abstract
The analysis of mobility patterns from large-scale spatio-temporal datasets is key to personalised location-based applications. Datasets capturing user location are, however, often incomplete due to temporary failures of sensors, deliberate interruptions or because of data privacy restrictions. Effective location imputation is thus a critical processing step enabling mobility pattern mining from sparse data. To date, most studies in this area have focused on coarse location prediction at city scale. In this paper we aim to infer the missing location information of individuals tracked within structured, mostly confined spaces such as a university campus or a mall. Many indoor tracking datasets may be collected by sensing user presence via WiFi sensing and consist of timestamped associations with the network’s access points (APs). Such coarse location information imposes unique challenges to the location imputation problem. We present a contextual model that combines the regularity of individuals’ visits to enable accurate imputation of missing locations in sparse indoor trajectories. This model also considers implicit social ties to capture similarities between individuals, applying Graph-regularized Nonnegative Matrix Factorization (GNMF) techniques. Our findings suggest that people’ movement in confined spaces is largely habitual and their social ties plays a role in their less frequently visited locations.
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References
Cai, D., He, X., Han, J., Huang, T.S.: Graph regularized nonnegative matrix factorization for data representation. IEEE Trans. Pattern Anal. Mach. Intell. 33, 1548–1560 (2011)
Cho, E., Myers, S.A., Leskovec, J.: Friendship and mobility: user movement in location-based social networks. In: KDD (2011)
Chung, F.R.: Spectral Graph Theory, No. 92. American Mathematical Soc. (1997)
Cranshaw, J., Toch, E., Hong, J., Kittur, A., Sadeh, N.: Bridging the gap between physical location and online social networks. In: UBICOMP (2010)
Guting, R.H., Valdés, F., Damiani, M.L.: Symbolic trajectories. ACM Trans. Spat. Algorithms Syst. (2015)
Hu, Y., Koren, Y., Volinsky, C.: Collaborative filtering for implicit feedback datasets. In: Proceedings of ICDM, pp. 263–272. IEEE (2008)
Kim, Y., Shin, H., Cha, H.: Smartphone-based Wi-Fi pedestrian-tracking system tolerating the RSS variance problem. In: 2012 IEEE International Conference on Pervasive Computing and Communications (PerCom) (2012)
Li, W., Hu, Y., Fu, X., Lu, S., Chen, D.: Cooperative positioning and tracking in disruption tolerant networks. IEEE Trans. Parallel Distrib. Syst. 26, 382–391 (2015)
Lian, D., Ge, Y., Zhang, F., Yuan, N.J., Xie, X., Zhou, T., Rui, Y.: Content-aware collaborative filtering for location recommendation based on human mobility data. In: Proceedings of ICDM, pp. 261–270. IEEE (2015)
Lian, D., Zhang, Z., Ge, Y., Zhang, F., Yuan, N.J., Xie, X.: Regularized content-aware tensor factorization meets temporal-aware location recommendation. In: ICDM (2016)
Liu, B., Fu, Y., Yao, Z., Xiong, H.: Learning geographical preferences for point-of-interest recommendation. In: Proceedings of KDD, New York, NY, USA, pp. 1043–1051 (2013)
McGee, J., Caverlee, J., Cheng, Z.: Location prediction in social media based on tie strength. In: Proceedings of CIKM (2013)
Pham, H., Shahabi, C., Liu, Y.: Inferring social strength from spatiotemporal data. ACM Trans. Database Syst. (2016)
Wang, D., Pedreschi, D., Song, C., Giannotti, F., Barabasi, A.L.: Human mobility, social ties, and link prediction. In: ACM SIGKDD (2011)
Wang, Y., Yuan, N.J., Lian, D., Xu, L., Xie, X., Chen, E., Rui, Y.: Regularity and conformity: location prediction using heterogeneous mobility data. In: Proceedings of KDD (2015)
Ye, A., Sao, J., Jian, Q.: A robust location fingerprint based on differential signal strength and dynamic linear interpolation. Secur. Commun. Netw. 9(16), 3618–3626 (2016). sCN-15-0656.R2
Yin, H., Sun, Y., Cui, B., Hu, Z., Chen, L.: LCARS: a location-content-aware recommender system. In: Proceedings of KDD (2013)
Yuan, Q., Cong, G., Sun, A.: Graph-based point-of-interest recommendation with geographical and temporal influences. In: Proceedings of CIKM (2014)
Zheng, V.W., Cao, B., Zheng, Y., Xie, X., Yang, Q.: Collaborative filtering meets mobile recommendation: a user-centered approach. In: Proceedings of AAAI (2010)
Acknowledgement
This research is supported by a Linkage Project grant of the Australian Research Council (LP120200413) and a Discovery Project grant of the Australian Research Council (DP170100153).
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Naghizade, E., Chan, J., Ren, Y., Tomko, M. (2018). Contextual Location Imputation for Confined WiFi Trajectories. In: Phung, D., Tseng, V., Webb, G., Ho, B., Ganji, M., Rashidi, L. (eds) Advances in Knowledge Discovery and Data Mining. PAKDD 2018. Lecture Notes in Computer Science(), vol 10938. Springer, Cham. https://doi.org/10.1007/978-3-319-93037-4_35
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DOI: https://doi.org/10.1007/978-3-319-93037-4_35
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