Ricky K. P. Mok (莫嘉沛)Ph.D. (HKPU), BEng (CUHK), DipABRSM

Biography

I am currently an assistant research scientist in CAIDA/UC San Diego. I received my Ph.D. (Computer Science) from the Department of Computing at the Hong Kong Polytechnic University and B.Eng. (Major in Computer Engineering, minor in Spanish) from the Department of Computer Science and Engineering at the Chinese University of Hong Kong in 2016 and 2009, respectively. My research interest includes network measurement, network data analysis, HTTP streaming system, quality of experience (QoE) measurement, and reliable crowdsourcing-based QoE assessment methods.

During my leisure time, I play cello and brew good cups of coffee. Before joining CAIDA, I was the principal cello of the Hong Kong City Chinese Music Orchestra and the conductor of Tune of Pandora. I am a holder of DipABRSM in performance (cello), and City & Guilds International Award in Barista Skills.

Publications

2022

  • Rui Yang , Ricky K. P. Mok, Shuohan Wu, Xiapu Luo, Hongyu Zou, Weichao Li, "Design and Implementation of Web-based Speed Test Analysis Tool Kit", In PAM, 2022.

  • Esteban Carisimo, Ricky K. P. Mok, kc claffy, David D. Clark, "Jitterbug: A new framework for jitter-based congestion inference", In PAM, 2022.

2021

  • Zesen Zhang, Alexander Marder, Ricky K. P. Mok, Bradley Huffaker, Matthew Luckie, K.C. Claffy, Aaron Schulman, "Inferring Regional Access Network Topologies: Methods and Applications", In ACM IMC, 2021.

  • Ricky K. P. Mok, Hongyu Zou, Rui Yang, Tom Koch, Ethan Katz-Bassett, kc claffy, "Measuring the network performance of Google Cloud Platform", In ACM IMC, 2021.

2020

  • Ricky K. P. Mok, kc claffy, "Measuring the impact of COVID-19 on cloud network performance", In IAB COVID-19 Network Impacts Workshop, 2020.

  • Ricky K. P. Mok, Ginga Kawaguti, Jun Okamoto, "Improving the Efficiency of QoE Crowdtesting", In Proc. ACM QoEVMA, 2020.

  • Che Zhang, Shiwei Zhang, Yi Wang, Weichao Li, Bo Jin, Ricky K. P. Mok, Qing Li, Hong Xu, "Scalable Traffic Engineering for Higher Throughput in Heavily-loaded Software Defined Networks", In Proc. IFIP/IEEE NOMS mini-conference session, 2020.

  • Roderick Fanou, Bradley Huffaker, Ricky K. P. Mok, KC Claffy, "Unintended consequences: Effects of submarine cable deployment on Internet routing", In Proc. PAM, 2020. (Best paper award)

  • Adnan Ahmed, Ricky K. P. Mok, Zubair Shafiq, "FlowTrace: A Framework for Active Bandwidth Measurements using In-band Packet Trains", In Proc. PAM, 2020.

2019

  • Ricky K. P. Mok, Ginga KAWAGUTI, kc claffy, "QUINCE: A Unified Crowdsourcing-based QoE Measurement Platform", In Proc. ACM SIGCOMM poster session, 2019.

  • Rajarshi Bhattacharyya, Archana Bura, Desik Rengarajan, Mason Rumuly, Srinivas Shakkottai, Dileep Kalathil, Ricky K. P. Mok, Amogh Dhamdhere, "QFlow: A Reinforcement Learning Approach to High QoE Video Streaming over Wireless Networks", In Proc. ACM MobiHoc, 2019.

  • Shiwei Zhang, Weichao Li, Daoyuan Wu, Bo Jin, Rocky K. C. Chang, Debin Gao, Yi Wang, Ricky K. P. Mok, "An empirical study of mobile network behavior and application performance in the wild", In Proc. IEEE IWQoS, 2019.

2018

  • Amogh Dhamdhere, David D. Clark, Alexander Gamero-Garrido, Matthew Luckie, Ricky K. P. Mok, Gautam Akiwate, Kabir Gogia, Vaibhav Bajpai, Alex C. Snoeren, kc claffy, "Inferring Persistent Interdomain Congestion", In Proc. ACM SIGCOMM, 2018. (Best paper award)

  • Ricky K. P. Mok, Vaibhav Bajpai, Amogh Dhamdhere, kc claffy, "Revealing the load balancing behavior of YouTube traffic on interdomain links", In Proc. PAM, March 2018.

2017

  • Weichao Li, Daoyuan Wu, Rocky K. C. Chang, Ricky K. P. Mok, "Toward Accurate Network Measurement on Android Phones", IEEE Transactions on Mobile Computing, vol. 17(3) p.717-732.

  • Ricky K. P. Mok, Rocky K. C. Chang, Weichao Li, "Detecting low-quality workers in QoE crowdtesting: A worker behavior based approach", IEEE Transactions on Multimedia vol. 19(3) p.530-543.

2016

  • Weichao Li, Daoyuan Wu, Rocky K. C. Chang, Ricky K. P. Mok, "Demystifying and Puncturing the Inflated Delay in Smartphone-based WiFi Network Measurement", In Proc. ACM CoNEXT, December 2016.

  • Ricky K. P. Mok, Weichao Li, Rocky K. C. Chang, "IRate: Initial Video Bitrate Selection System for HTTP Streaming", Poster: In Proc. USENIX NSDI (Poster and Demo Session), April 2013. Journal: IEEE Journal on Selected Areas in Communications vol. 34(6) p.1914-1928.

2015

  • Ricky K. P. Mok, Weichao Li, Rocky K. C. Chang, Kwok-Wun Yung, Ching-Ho Chan, Yat-Sing Poon, “An automated testbed for profiling the packet send-time accuracy of embedded devices”, In Proc. TRIDENTCOM (Poster Session), June 2015.

  • Ricky K. P. Mok, Weichao Li, Rocky K. C. Chang, "Detecting low-quality crowdtesting workers", In Proc. IEEE/ACM IWQoS, June 2015.

  • Weichao Li, Ricky K. P. Mok, Daoyuan Wu, Rocky K. C. Chang, "On the Accuracy of Smartphone-based Mobile Network Measurement", In Proc. IEEE INFOCOM, May 2015.

  • Ricky K. P. Mok, Weichao Li, Rocky K. C. Chang, "Improving the packet send-time accuracy in embedded devices", In Proc. PAM, March 2015.

2011-2014

  • Ricky K. P. Mok, Weichao Li, Rocky K. C. Chang, "A user behavior based cheat detection mechanism for crowdtesting", In Proc. ACM SIGCOMM (Poster and Demo Session), August 2014.

  • Weichao Li, Ricky K. P. Mok, Rocky K. C. Chang, and Waiting W. T. Fok, "Appraising the Delay Accuracy in Browser-based Network Measurement", In Proc. ACM IMC, October 2013.

  • Lei Xue, Ricky K. P. Mok, Rocky K. C. Chang, "OMWare: An Open Measurement Ware for Stable Residential Broadband Measurement", In Proc. ACM SIGCOMM (Poster and Demo Session), August 2013.

  • Waiting W. T. Fok, Xiapu Luo, Ricky K. P. Mok, Weichao Li, Rocky K. C. Chang, Yujing Liu, Edmond W. W. Chan, "MonoScope: Automating Network Faults Diagnosis Based on Active Measurements", In Proc. IFIP/IEEE IM, May 2013.

  • Ricky K. P. Mok, Xiapu Luo, Edmond W. W. Chan, Rocky K. C. Chang, "QDASH: A QoE-aware DASH system", In Proc. ACM MMSys, February 2012.

  • Ka-Chun Wong, Chun-Ho Wu, Ricky K. P. Mok, Chengbin Peng, Zhaolei Zhang, "Evolutionary Multimodal Optimization using The Principle of Locality.", Information Sciences, vol. 194 p.138-170.

  • Edmond W. W. Chan, Ang Chen, Xiapu Luo, Ricky K. P. Mok, Weichao Li, and Rocky K. C. Chang, "TRIO: Measuring Asymmetric Capacity with Three Minimum Round-trip Times", In Proc. ACM CoNEXT, December 2011.

  • Ricky K. P. Mok, Edmond W. W. Chan, Xiapu Luo, and Rocky K. C. Chang, "Inferring the QoE of HTTP Video Streaming from User-Viewing Activities", In Proc. ACM SIGCOMM Workshop on Measurements Up the STack (W-MUST), August 2011.

  • Ricky K. P. Mok, Edmond W. W. Chan, and Rocky K. C. Chang, "Measuring the Quality of Experience of HTTP Video Streaming", In Proc. IFIP/IEEE IM (Pre-conf Session), May 2011.

Ph.D. Thesis

Title: Towards a QoE-aware video streaming system

Supervisor: Prof. Rocky K. C. Chang

Chairman of the Broad of Examiners: Prof. Jane You

External examiners: Prof. Dah Ming Chiu and Prof. Yong Liu

Research Group

CAIDA/UC San Diego

Internet Infrastructure and Security Research Laboratory/The Hong Kong Polytechnic University oneprobe.org

Contact

cskpmok[AT]caida<dot>org

cs[AT]rmok<dot>pw