Browse by Current Cardiff authors

Barhamgi, Mahmoud, Perera, Charith, Yu, Chia-Mu, Benslimane, Djamal, Camacho, David and Bonnet, Christine 2020. Privacy in data service composition. IEEE Transactions on Services Computing 13 (4) , pp. 639-652. 10.1109/TSC.2019.2963309

Alkhariji, Lamya, Rana, Omer and Perera, Charith 2020. Examining the interplay between privacy by design (PbD) schemes and privacy patterns. [Technical Report]. Cardiff University.

Aljeraisy, Atheer, Barati, Masoud, Rana, Omer and Perera, Charith 2020. Exploring the relationships between privacy by design schemes and privacy laws: a comparative analysis. [Technical Report]. Cardiff University.

Azad, Muhammad Ajmal, Bag, Samiran, Perera, Charith, Barhamgi, Mahmoud and Feng, Hao 2020. Authentic-caller: self-enforcing authentication in a next generation network. IEEE Transactions on Industrial Informatics 16 (5) , pp. 3606-3615. 10.1109/TII.2019.2941724

Abidi, Balkis, Yahia, Sadok Ben and Perera, Charith 2020. Hybrid microaggregation for privacy preserving data mining. Journal of Ambient Intelligence and Humanized Computing 11 (1) , pp. 23-38. 10.1007/s12652-018-1122-7

Majib, Yasar and Perera, Charith 2020. Context aware family dynamics based Internet of Things access control towards better child safety. Presented at: 6th IEEE World Forum on Internet of Things (WF-IoT 2020), Virtual, August, September 2020.

Juj, Karan and Perera, Charith 2020. Exploring the suitability of BLE veacons to track poacher vehicles in harsh jungle terrains. Presented at: 6th IEEE World Forum on Internet of Things (WF-IoT 2020), Virtual, August, September 2020.

Jones, Luke and Perera, Charith 2020. PizzaBox: studying physical object manipulation based fast food ordering. Presented at: Ubicomp 2020, Virtual, 12-16 September 2020. Adjunct Proceedings of the 2020 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2020 ACM International Symposium on Wearable Computers (UbiComp/ISWC '20 Adjunct). ACM, 10.1145/3410530.3414376

Azad, Muhammad Ajmal, Perera, Charith and Barhamgi, Mahmoud 2020. Privacy-preserving crowd-sensed trust aggregation in the user-centeric internet of people networks. ACM Transactions on Cyber-Physical Systems 10.1145/3390860

Bou-Chaaya, Karam, Chbeir, Richard, Alraja, Mansour Naser, Arnould, Philippe, Perera, Charith, Barhamgi, Mahmoud and Benslimane, Djamal 2020. δ-Risk: Towards context-aware multi-objective privacy management in connected environments. ACM Transactions on Internet Technology

Barhamgi, Mahmoud, Perera, Charith, Yu, Chia-Mu, Benslimane, Djamal, Camacho, David and Bonnet, Christine 2019. Privacy in data service composition. IEEE Transactions on Services Computing 13 (4) , pp. 639-652. 10.1109/TSC.2019.2963309

Perera, Charith, Rana, Omer, Goossens, Benoît and Wengel, Pablo Orozco-ter 2019. Internet of Things for efficient wildlife conservation: challenges and opportunities. [Technical Report]. Cardiff: Cardiff University. Available at: http://iotgarage.net/publications/pdfs/FinalReport...

Rehman, Muhammad, Yaqoob, Ibrar, Salah, Khaled, Imran, Muhammad, Jayaraman, Prem Prakash and Perera, Charith 2019. The role of big data analytics in industrial Internet of Things. Future Generation Computer Systems 99 , pp. 247-259.

Beckett, Rhys and Perera, Charith 2019. IoT Skullfort: exploring the impact of internet connected cosplay. Presented at: 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp), London, United Kingdom, 11-13 September, 2019. Adjunct Proceedings of the 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2019 ACM International Symposium on Wearable Computers. New York, NY, USA: ACM, pp. 5-8. 10.1145/3341162.3343783

Li, Yinhao, Alqahtani, Awatif, Solaiman, Ellis, Perera, Charith, Jayaraman, Prem Prakash, Buyya, Rajkumar, Morgan, Graham and Ranjan, Rajiv 2019. IoT-CANE: a unified knowledge management system for data-centric Internet of Things application systems. Journal of Parallel and Distributed Computing 131 , pp. 161-172. 10.1016/j.jpdc.2019.04.016

Hussein, Ahmed, Barhamgi, Mahmoud, Vecchio, Massimo and Perera, Charith 2019. Crowdsourced peer learning activity for Internet of Things education: a case study. IEEE Internet of Things Magazine 2 (3) , pp. 26-31. 10.1109/IOTM.0001.1900040

Perera, Charith, Aghaee, Saeed, Faragher, Ramsey, Harle, Robert and Blackwell, Alan 2019. Contextual location in the home using Bluetooth Beacons. IEEE Systems Journal 13 (3) , pp. 2720-2723. 10.1109/JSYST.2018.2878837

Safa, Nader Sohrabi, Maple, Carsten, Furnell, Steve, Azad, Muhammad Azad, Perera, Charith, Dabbagh, Mohammad and Sookhak, Mehdi 2019. Deterrence and prevention-based model to mitigate information security insider threats in organisations. Future Generation Computer Systems 97 , pp. 587-597. 10.1016/j.future.2019.03.024

Tayeh, Gaby, Makhoul, Abdallah, Perera, Charith and Demerjian, Jacques 2019. A spatial-temporal correlation approach for data reduction in cluster-based sensor networks. IEEE Access 7 , pp. 50669-50680. 10.1109/ACCESS.2019.2910886

Alturki, Badraddin, Reiff-Marganiec, Stephan, Perera, Charith and De, Suparna 2019. Exploring the effectiveness of service decomposition in fog computing architecture for the Internet of Things. IEEE Transactions on Sustainable Computing 10.1109/TSUSC.2019.2907405

Xu, Chen, Feng, Junhao, Zhou, Zhenyu, Wu, Jun and Perera, Charith 2019. Cross-layer optimization for cooperative content distribution in multihop device-to-device networks. IEEE Internet of Things 6 (1) , pp. 278-287. 10.1109/JIOT.2017.2741718

Perera, Charith, Barhamgi, Mahmoud, Bandara, Arosha K., Ajmal, Muhammad, Price, Blaine and Nuseibeh, Bashar 2019. Designing privacy-aware Internet of Things applications. Information Sciences 512 , pp. 238-257. 10.1016/j.ins.2019.09.061

Zhou, Yuchao, De, Suparna, Ewa, Gideon, Perera, Charith and Moessner, Klaus 2018. Data-driven air quality characterization for urban environments: a case study. IEEE Access 6 , pp. 77996-78006. 10.1109/ACCESS.2018.2884647

Perera, Charith, Barhamgi, Mahmoud, De, Suparna, Baarslag, Tim, Vecchio, Massimo and Choo, Kim-Kwang Raymond 2018. Designing the sensing as a service ecosystem for Internet of Things. IEEE Internet of Things 1 (2) , pp. 18-23. 10.1109/IOTM.2019.1800023

Antonini, Mattia, Vecchio, Massimo, Antonelli, Fabio, Ducange, Pietro and Perera, Charith 2018. Smart audio sensors in the internet of things edge for anomaly detection. IEEE Access 6 , pp. 67594-67610. 10.1109/ACCESS.2018.2877523

Kaur, Devinder, Aujla, Gagangeet Singh, Kumar, Neeraj, Zomaya, Albert Y., Perera, Charith and Ranjan, Rajiv 2018. Tensor-based big data management scheme for dimensionality reduction problem in smart grid systems: SDN perspective. IEEE Transactions on Knowledge and Data Engineering 30 (10) , pp. 1985-1998. 10.1109/TKDE.2018.2809747

Barhamgi, Mahmoud, Perera, Charith, Ghedira, Chirine and Benslimane, Djamal 2018. User-centric privacy engineering for the internet of things. IEEE Cloud Computing 5 (5) , pp. 47-57. 10.1109/MCC.2018.053711666

Perera, Charith 2018. Rentable Internet of Things infrastructure for sensing as a service (S2aaS). [Technical Report]. Newcastle University.

Perera, Charith 2018. Sensing as a Service for Internet of Things: A Roadmap. Leanpub.

Nunes, Luiz H., Estrella, Julio C., Perera, Charith, Reiff-Marganiec, Stephan and Delbem, Alexandre C. B. 2018. The elimination-selection based algorithm for efficient resource discovery in Internet of Things environments. Presented at: 15th IEEE Annual Consumer Communications & Networking Conference (CCNC 2018), Las Vegas, NV, USA, 12-15 Janurary 2018. 15th IEEE Annual Consumer Communications & Networking Conference (CCNC). pp. 1-7. 10.1109/CCNC.2018.8319280

Rehman, Muhammad Habib ur, Jayaraman, Prem Prakash and Perera, Charith 2017. The emergence of edge-centric distributed IoT analytics platforms. In: Hassan, Qusay F., Khan, Atta ur Rehman and Madani, Sajjad A. eds. Internet of Things Challenges, Advances, and Applications, New York, NY, USA: Chapman and Hall/CRC,

Alturki, Badraddin, Reiff-Marganiec, Stephan and Perera, Charith 2017. A hybrid approach for data analytics for internet of things. Presented at: 7th International Conference on the Internet of Things (IoT 2017), Linz, Austria, 22-25 October 2017. Proceedings of the Seventh International Conference on the Internet of Things. ACM, 10.1145/3131542.3131558

Nunes, Luiz H., Estrella, Julio C., Perera, Charith, Reiff-Marganiec, Stephan and Delbem, Alexandre N. 2017. Multi‐criteria IoT resource discovery: a comparative analysis. Software: Practice and Experience 47 (10) , pp. 1325-1341. 10.1002/spe.2469

Jayaraman, Prem Prakash, Perera, Charith, Georgakopoulos, Dimitrios, Dustdar, Schahram, Thakker, Dhavalkumar and Ranjan, Rajiv 2017. Analytics‐as‐a‐service in a multi‐cloud environment through semantically‐enabled hierarchical data processing. Software: Practice and Experience 47 (8) , pp. 1139-1156. 10.1002/spe.2432

Perera, Charith, Qin, Yongrui, Estrella, Julio C., Reiff-Marganiec, Stephan and Vasilakos, Athanasios V. 2017. Fog computing for sustainable smart cities: a survey. ACM Computing Surveys 50 (3) , 32. https://doi.org/10.1145/3057266

Perera, Charith and Vasilakos, Athanasios 2017. Privacy mindset for developing Internet of Things applications for social sensing: software engineering challenges. Presented at: 2nd International Workshop on Social Sensing (SocialSens 2017), Pittsburgh, PA USA, 21 April 2017. 2nd International Workshop on Social Sensing. ACM, 10.1145/3055601.3055621

Perera, Charith, Wakenshaw, Susan, Baarslag, Tim, Haddadi, Hamed, Bandara, Arosha, Mortier, Richard, Crabtree, Andy, Ng, Irene, McAuley, Derek and Crowcroft, Jon 2017. Valorising the IoT databox: creating value for everyone. Transactions on Emerging Telecommunications Technologies 28 (1) , e3125. 10.1002/ett.3125

Perera, Charith 2017. Privacy guidelines for Internet of Things: a cheat sheet. [Technical Report]. Newcastle University. Available at: https://arxiv.org/pdf/1708.05261.pdf

Nunes, Luiz H., Estrella, Julio C., Delbem, Alexandre C. B., Perera, Charith and Reiff-Marganiec, Stephan 2016. The effects of relative importance of user constraints in cloud of things resource discovery: a case study. Presented at: 9th International Conference on Utility and Cloud Computing, Shanghai, China, 6-9 December 2016. Proceedings of the 9th International Conference on Utility and Cloud Computing. ACM, pp. 245-250. 10.1145/2996890.3007867

Perera, Charith, McCormick, Ciaran, Bandara, Arosha K., Price, Blaine A. and Nuseibeh, Bashar 2016. Privacy-by-design framework for assessing Internet of Things applications and platforms. Presented at: 6th International Conference on the Internet of Things (IoT 2016), Stuttgart, Germany, 7-9 November 2016. Proceedings of the 6th International Conference on the Internet of Things. ACM, pp. 83-92. 10.1145/2991561.2991566

Perera, Charith, Liu, Chang, Ranjan, Rajiv, Wang, Lizhe and Zomaya, Albert Y 2016. Privacy-knowledge modeling for the Internet of Things: a look back. Computer 49 (12) , pp. 60-68. 10.1109/MC.2016.366

Perera, Charith 2016. Sensing as a service (S2aaS): buying and selling IoT data. [Online]. iot.ieee.org: IEEE. Available at: https://iot.ieee.org/newsletter/november-2016/sens...

Perera, Charith and Vasilakos, Athanasios V. 2016. A knowledge-based resource discovery for Internet of Things. Knowledge-Based Systems 109 , pp. 122-136. 10.1016/j.knosys.2016.06.030

Nilsson, Tommy, Hogsden, Carl, Perera, Charith, Aghaee, Saeed, Scruton, David J., Lund, Andreas and Blackwell, Alan F. 2016. Applying seamful design in location-based mobile museum applications. ACM Transactions on Multimedia Computing, Communications and Applications 12 (4) , 56. 10.1145/2962720

Bennaceur, Amel, McCormick, Ciaran, García-Galán, Jesús, Perera, Charith, Smith, Andrew, Zisman, Andrea and Nuseibeh, Bashar 2016. Feed me, feed me: an exemplar for engineering adaptive software. Presented at: 11th International Symposium on Software Engineering for Adaptive and Self-Managing Systems (SEAMS 2016), Austin, TX, USA, 16-17 May 2016. 2016 IEEE/ACM 11th International Symposium on Software Engineering for Adaptive and Self-Managing Systems (SEAMS). ACM, pp. 89-95. 10.1145/2897053.2897071

Wang, Meisong, Perera, Charith, Jayaraman, Prem Prakash, Zhang, Miranda, Strazdins, Peter and Ranjan, Rajiv 2016. City data fusion: sensor data fusion in the Internet of Things. International Journal of Distributed Systems and Technologies 7 (1) , pp. 15-37. 10.4018/IJDST.2016010102

Nunes, Luiz, Estrella, Julio, Nakamura, Luis, Libardi, Rafael de, Ferreira, Carlos, Jorge, Liuri, Perera, Charith and Reiff-Marganiec, Stephan 2016. A distributed sensor data search platform for Internet of Things environments. International Journal of Services Computing 4 (1)

Perera, Charith, Talagala, Dumidu S., Liu, Chi Harold and Estrella, Julio C. 2015. Energy-efficient location and activity-aware on-demand mobile distributed sensing platform for sensing as a service in IoT clouds. IEEE Transactions on Computational Social Systems 2 (4) , pp. 171-181. 10.1109/TCSS.2016.2515844

Perera, Charith, Jayaraman, Prem, Jayawardena, Srimal, Zaslavsky, Arkady, Liu, Chi Harold and Christen, Peter 2015. Mobile sensing devices and platforms for CPS. In: Liu, Chi (Harold) and Zhang, Yan eds. Cyber Physical Systems Architectures, Protocols and Applications, Boca Raton, FL, USA: Taylor & Francis Group, LLC, pp. 11-40.

Perera, Charith, Liu, Chi Harold and Christen, Peter 2015. Device search and selection for CPS. In: Liu, Chi (Harold) and Zhang, Yan eds. Cyber Physical Systems Architectures, Protocols and Applications, Boca Raton, FL, USA: Taylor & Francis, pp. 67-99.

Yürür, Özgür, Liu, Chi Harold, Perera, Charith, Chen, Min, Liu, Xue and Moreno, Wilfrido 2015. Energy-efficient and context-aware smartphone sensor employment. IEEE Transactions on Vehicular Technology 64 (9) , pp. 4230-4244. 10.1109/TVT.2014.2364619

Perera, Charith, Ranjan, Rajiv and Wang, Lizhe 2015. End-to-end privacy for open big data markets. IEEE Cloud Computing 2 (4) , pp. 44-53. 10.1109/MCC.2015.78

Perera, Charith, Ranjan, Rajiv, Wang, Lizhe, Khan, Samee U. and Zomaya, Albert Y. 2015. Big data privacy in the Internet of Things era. IT Professional 17 (3) , pp. 32-39. 10.1109/MITP.2015.34

Perera, Charith, Aghaee, Saeed and Blackwell, Alan 2015. Natural notation for the domestic Internet of Things. Presented at: 2015 International Symposium on End User Development (IS-EUD), Madrid, Span, 26-29 May, 2015. Published in: Díaz, Paloma, Pipek, Volkmar, Ardito, Carmelo, Jensen, Carols, Aedo, Ignacio and Boden, Alexander eds. International Symposium on End User Development IS-EUD 2015. Lecture Notes in Computer Science Springer International Publishing, pp. 25-41. 10.1007/978-3-319-18425-8_3

Perera, Charith, Liu, Chi Harold and Jayawardena, Srimal 2015. The emerging Internet of Things marketplace from an industrial perspective: a survey. IEEE Transactions on Emerging Topics in Computing 3 (4) , pp. 585-598. 10.1109/TETC.2015.2390034

Jayaraman, Prem Prakash, Perera, Charith, Georgakopoulos, Dimitrios and Zaslavsky, Arkady 2014. MOSDEN: a scalable mobile collaborative platform for opportunistic sensing applications. EAI Transactions on Collaborative Computing 01 (1) , e6. 10.4108/cc.1.1.e6

Perera, Charith, Zaslavsky, Arkady, Compton, Michael, Christen, Peter and Georgakopoulos, Dimitrios 2014. Semantic-driven configuration of Internet of Things middleware. Presented at: 2013 Ninth International Conference on Semantics, Knowledge and Grids, Beijing, China, 3-4 October 2013. 2013 Ninth International Conference on Semantics, Knowledge and Grids. IEEE, pp. 66-73. 10.1109/SKG.2013.9

Perera, Charith, Jayaraman, Prem Prakash, Zaslavsky, Arkady, Georgakopoulos, Dimitrios and Christen, Peter 2014. Sensor discovery and configuration framework for the Internet of Things paradigm. Presented at: 2014 IEEE World Forum on Internet of Things (WF-IoT), Seoul, South Korea, 6-8 March 2014. 2014 IEEE World Forum on Internet of Things (WF-IoT). IEEE, pp. 94-99. 10.1109/WF-IoT.2014.6803127

Perera, Charith and Zaslavsky, Arkady 2014. Improve the sustainability of Internet of Things through trading-based value creation. Presented at: 2014 IEEE World Forum on Internet of Things (WF-IoT), Seoul, South Korea, 6-8 March 2014. 2014 IEEE World Forum on Internet of Things (WF-IoT). IEEE, pp. 135-140. 10.1109/WF-IoT.2014.6803135

Perera, Charith, Jayaraman, Prem Prakash, Zaslavsky, Arkady, Christen, Peter and Georgakopoulos, Dimitrios 2014. Context-aware dynamic discovery and configuration of ‘things’ in smart environments. In: Bessis, Nik and Dobre, Ciprian eds. Big Data and Internet of Things: A Roadmap for Smart Environments, Vol. 546. Studies in Computational Intelligence, Springer International Publishing, pp. 215-241. (10.1007/978-3-319-05029-4_9)

Perera, Charith, Jayaraman, Prem Prakash, Zaslavsky, Arkady, Christen, Peter and Georgakopoulos, Dimitrios 2014. MOSDEN: an Internet of Things middleware for resource constrained mobile devices. Presented at: 47th Hawaii International Conference on System Sciences (HICSS 2014), Waikoloa, HI, USA, 6-9 January 2014. 2014 47th Hawaii International Conference on System Sciences. IEEE, pp. 1053-1062. 10.1109/HICSS.2014.137

Perera, Charith, Zaslavsky, Arkady, Christen, Peter and Georgakopoulos, Dimitrios 2014. Sensing as a service model for smart cities supported by Internet of Things. Transactions on Emerging Telecommunications Technologies 25 (1) , pp. 81-93. 10.1002/ett.2704

Perera, Charith, Liu, Chi Harold, Jayawardena, Srimal and Chen, Min 2014. A survey on Internet of Things from industrial market perspective. IEEE Access 2 , pp. 1660-1679. 10.1109/ACCESS.2015.2389854

Jayaraman, Prem Prakash, Perera, Charith, Georgakopoulos, Dimitrios and Zaslavsky, Arkady 2013. Efficient opportunistic sensing using mobile collaborative platform MOSDEN. Presented at: 9th IEEE International Conference on Collaborative Computing: Networking, Applications and Worksharing, Austin, TX, USA, 20-23 October 2013. 9th IEEE International Conference on Collaborative Computing: Networking, Applications and Worksharing. IEEE, pp. 77-86. 10.4108/icst.collaboratecom.2013.254090

Perera, Charith, Zaslavsky, Arkady, Liu, Chi Harold, Compton, Michael, Christen, Peter and Georgakopoulos, Dimitrios 2013. Sensor search techniques for sensing as a service architecture for the Internet of Things. IEEE Sensors Journal 14 (2) , pp. 406-420. 10.1109/JSEN.2013.2282292

Perera, Charith, Zaslavsky, Arkady, Christen, Peter, Compton, Michael and Georgakopoulos, Dimitrios 2013. Context-aware sensor search, selection and ranking model for Internet of Things middleware. Presented at: 2013 IEEE 14th International Conference on Mobile Data Management, Milan, Italy, 3-6 June 2013. 2013 IEEE 14th International Conference on Mobile Data Management. IEEE, pp. 314-322. 10.1109/MDM.2013.46

Perera, Charith, Jayaraman, Prem, Zaslavsky, Arkady, Christen, Peter and Georgakopoulos, Dimitrios 2013. Dynamic configuration of sensors using mobile sensor hub in internet of things paradigm. Presented at: 2013 IEEE Eighth International Conference on Intelligent Sensors, Sensor Networks and Information Processing, Melbourne, VIC, Australia, 2-5 April 2013. 2013 IEEE Eighth International Conference on Intelligent Sensors, Sensor Networks and Information Processing. IEEE, pp. 478-473. 10.1109/ISSNIP.2013.6529836

Perera, Charith, Zaslavsky, Arkady, Christen, Peter and Georgakopoulos, Dimitrios 2013. Context aware computing for the Internet of Things: a survey. Communications Surveys and Tutorials, IEEE Communications Society 16 (1) , pp. 414-454. 10.1109/SURV.2013.042313.00197

Perera, Charith, Zaslavsky, Arkady, Compton, Michael, Christen, Peter and Georgakopoulos, Dimitrios 2013. Context aware sensor configuration model for Internet of Things. Presented at: 12th International Semantic Web Conference (ISWC 2013), Sydney, Australia, 21-25 October 2013. Published in: Blomqvist, Eva and Groza, Tudor eds. Proceedings of the 2013th International Conference on Semantic Web (ISWC) Posters & Demonstrations. Aachen, DEU: CEUR Workshop Proceedings, pp. 254-256.

Perera, Charith, Zaslavsky, Arkady, Christen, Peter, Salehi, Ali and Georgakopoulos, Dimitrios 2012. Capturing sensor data from mobile phones using Global Sensor Network middleware. Presented at: 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC), Sydney, Australia, 9 September 2012. 2012 IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC). IEEE, pp. 24-29. 10.1109/PIMRC.2012.6362778

Perera, Charith, Zaslavsky, Arkady, Christen, Peter, Salehi, Ali and Georgakopoulos, Dimitrios 2012. Connecting mobile things to global sensor network middleware using system-generated wrappers. Presented at: Workshop on Data Engineering for Wireless and Mobile Access (MobiDE 2012), Scottsdale, Arizona, USA, 20 May 2012. Proceedings of the Eleventh ACM International Workshop on Data Engineering for Wireless and Mobile Access. New York, NY, USA: Association for Computing Machinery, pp. 23-30. 10.1145/2258056.2258062 Item availability restricted.

Perera, Charith, Zaslavsky, Arkady, Christen, Peter and Georgakopoulos, Dimitrios 2012. CA4IOT: Context Awareness for Internet of Things. Presented at: IEEE International Conference on Internet of Things (iThings 2012), Besancon, France, 20-23 November 2012. Green Computing and Communications (GreenCom), IEEE/ACM Int'l Conference on & Int'l Conference on Cyber, Physical and Social Computing (CPSCom). IEEE, pp. 775-782. 10.1109/GreenCom.2012.128

De, Suparna, Jassat, Usamah, Wang, Wei, Perera, Charith and Moessner, Klaus Inferring latent patterns in air quality from urban big data. IEEE Internet of Things Magazine