Zichuan Xu
Professor Supervisor of Doctorate Candidates Supervisor of Master's Candidates
Gender:Male
Alma Mater:澳大利亚国立大学
Degree:Doctoral Degree
School/Department:软件学院、国际信息与软件学院
Discipline:Software Engineering
Business Address:开发区校区综合楼
Contact Information:0411-62274514
E-Mail:z.xu@dlut.edu.cn
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Indexed by:会议论文
Date of Publication:2019-01-01
Included Journals:EI、CPCI-S
Key Words:Data replication and placement; big data analytics; edge clouds; query evaluation
Abstract:We are in the era of big data and cloud computing, large quantity of computing resource is desperately needed to detect invaluable information hidden in the coarse big data through query evaluation. Users demand big data analytic services with various Quality of Service (QoS) requirements. However, cloud computing is facing new challenges in meeting stringent QoS requirements of users due to the remoteness from its users. Edge computing has emerged as a new paradigm to address such shortcomings by bringing cloud services to the edge of the operation network in proximity of users for performance improvement. To satisfy the QoS requirements of users for big data analytics in edge computing, the data replication and placement problem must be properly dealt with such that user requests can be efficiently and promptly responded. In this paper, we consider data replication and placement for big data analytic query evaluation. We first cast a novel proactive data replication and placement problem of big data analytics in a two-tier edge cloud environment, we then devise an approximation algorithm with an approximation ratio for it, we finally evaluate the proposed algorithm against existing benchmarks, using both simulation and experiment in a testbed based on real datasets, the evaluation results show that the proposed algorithm is promising.
Currently I am a Professor at Dalian University of Technology. I obtained my PhD degree from Australian National University (ANU), and my PhD thesis is entitled "Cost-Aware Resource Allocation and Provisioning in Cloud Networks". Before joining ANU, I received my Bachelor and Master degree from Dalian University of Technology in China in 2008 and 2011. I was a Research Associate at University College London (UCL) from 2016 to 2017. Website: https://zichuanxu.com/