I am currently an Assistant Professor in the Department of Computer Science at Texas State University, San Marcos, TX. Prior to that, I worked as an assistant professor with the Department of Computer Engineering and Sciences, Florida Tech, Melbourne, FL, as a senior research engineer with Samsung Electronics DMC R&D Center (now Samsung Research), South Korea, and as a postdoctoral research scholar with the Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC, where I received my Ph.D. in Computer Engineering.

My research interests are in network science, data science, networking, and networked/computing systems. My recent focus is on

• Design and development of efficient algorithms and computational tools for network analysis and graph mining,

• Modeling, analysis, and control of epidemic/information spreading, and

• Applied machine learning with real-world applications that involve high-frequency streaming data.

I am also interested in big data analytics acceleration, and modeling, analysis, and optimization of large-scale networked systems.

Teaching

• CS 3358 Data Structures and Algorithms

Funding and Sponsors

• Collaborative Research: CNS Core: Small: Closing the Theory-Practice Gap in Understanding and Combating Epidemic Spreading on Resource-Constrained Large-Scale Networks, PI, National Science Foundation, Oct. 2020 - Sep. 2023

• III: Small: Collaborative Research: Cost-Efficient Sampling and Estimation from Large-Scale Networks, PI, National Science Foundation, Oct. 2019 - Sep. 2022

• Also currently supported or has been supported by NVIDIA, SK Hynix America, Florida Tech ACITC, and the Korea Meteorological Administration.

Selected Publications (Google Scholar)

• An Efficient and Scalable Algorithm for Estimating Kemeny's Constant of a Markov Chain on Large Graphs
  Shiju Li*, Xin Huang*, Chul-Ho Lee
  ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD), 2021.
  Acceptance rate: 238/1541 = 15.44%; *Equal contribution
  [PDF]

• Estimating Distributions of Large Graphs from Incomplete Sampled Data
  Shiju Li, Xin Huang, Chul-Ho Lee
  IFIP Networking Conference, 2021.
  Acceptance rate: 41/158 = 25.9%
  [Technical Report]

• Trapping Malicious Crawlers in Social Networks
  Shiju Li, Chul-Ho Lee, Do Young Eun
  ACM International Conference on Information and Knowledge Management (CIKM), 2020.
  Acceptance rate: 193/920 = 20.97%
  [Technical Report]

• CrowdQuake: A Networked System of Low-Cost Sensors for Earthquake Detection via Deep Learning
  Xin Huang*, Jangsoo Lee*, Young-Woo Kwon, Chul-Ho Lee
  ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD), 2020.
  Acceptance rate: 121/756 = 16%; *Equal contribution
  [PDF]

• Transient Dynamics of Epidemic Spreading and Its Mitigation on Large Networks
  Chul-Ho Lee, Srinivas Tenneti, Do Young Eun
  ACM International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc), 2019.
  Acceptance rate: 37/156 = 23.71%; Best Paper Award Finalist
  [arXiv preprint]

• Non-Markovian Monte Carlo on Directed Graphs
  Chul-Ho Lee, Min Kang, Do Young Eun
  Proceedings of the ACM on Measurement and Analysis of Computing Systems (POMACS), Vol. 3, No. 1, Article 15, March 2019;
  ACM SIGMETRICS International Conference on Measurement and Modeling of Computer Systems (SIGMETRICS), 2019.
  Acceptance rate: 50/317 = 15.77%
  [arXiv preprint]

• On the Rao-Blackwellization and Its Application for Graph Sampling via Neighborhood Exploration
  Chul-Ho Lee, Xin Xu, Do Young Eun
  IEEE International Conference on Computer Communications (INFOCOM), 2017.
  Acceptance rate: 292/1395 = 20.93%
  [Technical Report]

• Challenging the Limits: Sampling Online Social Networks with Cost Constraints
  Xin Xu, Chul-Ho Lee, Do Young Eun
  IEEE International Conference on Computer Communications (INFOCOM), 2017.
  Acceptance rate: 292/1395 = 20.93%
  [Technical Report]

• A High-Order Markov-Chain-Based Scheduling Algorithm for Low Delay in CSMA Networks
  Jaewook Kwak, Chul-Ho Lee, Do Young Eun
  IEEE/ACM Transactions on Networking (ToN), Vol. 24, No. 4, pages 2278-2290, Aug. 2016.

• Towards Distributed Optimal Movement Strategy for Data Gathering in Wireless Sensor Networks
  Chul-Ho Lee, Jaewook Kwak, Do Young Eun
  IEEE Transactions on Parallel and Distributed Systems (TPDS), Vol. 27, No. 2, pages 574-584, Feb. 2016.

• Exploiting Heterogeneity for Improving Forwarding Performance in Mobile Opportunistic Networks: An Analytic Approach
  Chul-Ho Lee, Do Young Eun
  IEEE Transactions on Mobile Computing (TMC), Vol. 15, No. 1, pages 150-162, Jan. 2016.

• On the Efficiency-Optimal Markov Chains for Distributed Networking Applications
  Chul-Ho Lee, Do Young Eun
  IEEE International Conference on Computer Communications (INFOCOM), 2015.
  Acceptance rate: 316/1640 = 19.3%

• A High-order Markov Chain Based Scheduling Algorithm for Low Delay in CSMA Networks
  Jaewook Kwak, Chul-Ho Lee, Do Young Eun
  IEEE International Conference on Computer Communications (INFOCOM), 2014.
  Acceptance rate: 320/1645 = 19.45%

• A General Framework of Hybrid Graph Sampling for Complex Network Analysis
  Xin Xu, Chul-Ho Lee, Do Young Eun
  IEEE International Conference on Computer Communications (INFOCOM), 2014.
  Acceptance rate: 320/1645 = 19.45%

• On the Forwarding Performance under Heterogeneous Contact Dynamics in Mobile Opportunistic Networks
  Chul-Ho Lee, Do Young Eun
  IEEE Transactions on Mobile Computing (TMC), Vol. 12, No. 6, pages 1107-1119, June 2013.

• Exploiting the Past to Reduce Delay in CSMA Scheduling: A High-order Markov Chain Approach (Extended Abstract)
  Jaewook Kwak, Chul-Ho Lee, Do Young Eun
  ACM SIGMETRICS International Conference on Measurement and Modeling of Computer Systems (SIGMETRICS), 2013.
  Acceptance rate: (26+28)/196 = 27.55%
  [arXiv preprint]

• Characterizing Link Connectivity for Opportunistic Mobile Networking: Does Mobility Suffice?
  Chul-Ho Lee, Jaewook Kwak, Do Young Eun
  IEEE International Conference on Computer Communications (INFOCOM), 2013.
  Acceptance rate: 280/1613 = 17.35%

• From Glauber Dynamics to Metropolis Algorithm: Smaller Delay in Optimal CSMA
  Chul-Ho Lee, Do Young Eun, Se-Young Yun, Yung Yi
  IEEE International Symposium on Information Theory (ISIT), 2012.

• Beyond Random Walk and Metropolis-Hastings Samplers: Why You Should Not Backtrack for Unbiased Graph Sampling
  Chul-Ho Lee, Xin Xu, Do Young Eun
  ACM SIGMETRICS International Conference on Measurement and Modeling of Computer Systems (SIGMETRICS), 2012.
  Acceptance rate: 31/203 = 15.27%
  [arXiv preprint]

• Toward Distributed Optimal Movement Strategy for Data Harvesting in Wireless Sensor Networks
  Chul-Ho Lee, Do Young Eun
  IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON), 2012.
  Acceptance rate: 19.4%

• Smart Sleep: Sleep More to Reduce Delay in Duty-Cycled Wireless Sensor Networks
  Chul-Ho Lee, Do Young Eun
  IEEE International Conference on Computer Communications (INFOCOM), 2011.
  Acceptance rate: (291+136)/1823 = 23.42%

• Exploiting Heterogeneity in Mobile Opportunistic Networks: An Analytic Approach
  Chul-Ho Lee, Do Young Eun
  IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON), 2010.
  Acceptance rate: 21%

• Super-diffusive Behavior of Mobile Nodes and Its Impact on Routing Protocol Performance
  Sungwon Kim, Chul-Ho Lee, Do Young Eun
  IEEE Transactions on Mobile Computing (TMC), Vol. 9, No. 2, pages 288-304, Feb. 2010.

• Heterogeneity in Contact Dynamics: Helpful or Harmful to Forwarding Algorithms in DTNs?
  Chul-Ho Lee, Do Young Eun
  International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt), 2009.

US Patents Granted

• Patent #10785713 "Device and method for accessing multiple networks in wireless communication system"

• Patent #10728792 "Device and method for receiving streaming service data in mobile communication system supporting plurality of radio access interfaces"

• Patent #10356000 "Apparatus and method for uploading data in mobile communication system supporting a plurality of radio access interfaces"

• Patent #10111171 "Method and apparatus for HTTP adaptive streaming in wireless network environment"

• Patent #10057147 "Apparatus and method for controlling data flow in communication system"

• Patent #9949208 "Method and apparatus for selecting power preference information in a wireless communication system network"

• Patent #9913280 "Method and apparatus of allocating resources for terminal in wireless communication system"

Awards and Recognition

• NVIDIA GPU Grant Award, 2020

• ACM MobiHoc 2019 Best Paper Award Finalist, 2019

• Distinguished TPC Member of IEEE INFOCOM 2018, 2019, 2020, 2021

• Florida Tech ACITC Minigrant Award, 2018

• ACM SIGMETRICS 2012 Student Travel Grant Award, 2012

• IEEE SECON 2012 Student Travel Grant Award, 2012

• IEEE ICC 2011 Student Travel Grant Award, 2011

Current Gradate Students

• Shiju Li (PhD student)

• Xin Huang (PhD student)

• Srinivas Tenneti (PhD student, NC State Univ., co-advised with Prof. Do Young Eun)

Former Students

• Joseph Nke, M.S., Dec. 2020

• James Bologna, M.S., May 2019

• Ebipamo Osaisai, M.S., May 2019

• McNels Sylvestre Philippe Auguste, B.S., May 2019

• Prosper Mapfeka, B.S., May 2018

Professional Activities

Conference Technical Program Committee

• SIAM International Conference on Data Mining 2022

• IEEE INFOCOM 2017, 2018, 2019, 2020, 2021, 2022

• ACM MobiHoc 2019, 2020, 2021, 2022

• IEEE/IFIP WiOpt 2018, 2019, 2020, 2021

• ACM HPDC Workshop – SNTA 2020, 2021

• IEEE SECON 2016

• IEEE/ACM MOBILESoft – Vision Track 2019

• IEEE/ACM MOBILESoft – ACM Student Research Competition 2015, 2016, 2017

• ACM International Workshop on Foundations of Mobile Computing (FOMC) 2014

Journal Technical Committee

• Elsevier Computer Communications