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Dr Han Liu

Dr Han Liu

Research Associate

School of Computer Science and Informatics

I am currently a Research Associate in Data Science in the School of Computer Science and Informatics at the Cardiff University. I have previously been a Research Associate in Computational Intelligence in the School of Computing at the University of Portsmouth. I received a BSc in Computing from University of Portsmouth in 2011, an MSc in Software Engineering from University of Southampton in 2012, and a PhD in Machine Learning from University of Portsmouth in 2015.

My research interests include data mining, machine learning, neural networks, rule based systems, intelligent systems, expert systems, fuzzy systems, big data analytics, granular computing and complex systems and networks.

I have some skills in programming and development such as Java, PHP, MySQL, Zend Framework, JavaScript and Object Oriented Methodology. I am proficient in optimisation, feature selection, feature extraction, classification, regression, association, clustering and prediction.

I have published two research monographs in Springer and over 50 papers in areas such as data mining, machine learning and intelligent systems. I have been registered as a reviewer for several established journals such as IEEE Transactions on Fuzzy Systems and Information Sciences (Elsevier). I was a member of the programme committee for the 17th International Conference on Machine Learning and Cybernetics (ICMLC 2018) and the 31st IEEE International Conference on Systems, Man and Cybernetics (SMC 2018) with the responsibility to review papers. In addition, I was awarded Member of the Institution of Engineering and Technology (IET) with designatory letters MIET in February 2016.

Education and qualifications

  • 2015: PhD (Machine Learning) University of Portsmouth, Portsmouth, UK
  • 2012: MSc (Software Engineering) University of Southampton, Southampton, UK
  • 2011: BSc (Computing) University of Portsmouth, Portsmouth, UK

Career overview

  • 2017 - present: Research Associate, School of Computer Science and Informatics, Cardiff University
  • 2016 - 2017: Research Associate, School of Computing, University of Portsmouth
  • 2016 - 2016: Research Assistant, Department of Operations and Systems Management, University of Portsmouth
  • 2013 - 2016: Demonstrator, School of Computing, University of Portsmouth

Honours and awards

  • Outstanding Contribution Award, 17th International Conference on Machine Learning and Cybernetics, China, 2018
  • Finalist of Lotfi Zadeh Best Paper Award, 17th International Conference on Machine Learning and Cybernetics, China, 2018
  • Finalist of Lotfi Zadeh Best Paper Award, 16th International Conference on Machine Learning and Cybernetics, China, 2017
  • Award of Key Scientific Article, Advances in Engineering, Canada, 2016
  • Member of IET (MIET), Institution of Engineering and Technology, UK, 2016
  • PhD Studentship in Computing, Faculty of Technology, University of Portsmouth, UK, 2012

Professional memberships

  • Member of the Institute of Electronic and Electrical Engineering (MIEEE)
  • Member of the Institution of Engineering and Technology (MIET)
  • Member of the IEEE Big Data Community
  • Member of the IEEE Computational Intelligence Society
  • Member of the IEEE Computer Society
  • Member of the IEEE Systems, Man and Cybernetics Society

Speaking engagements

  • "Multi-level Fusion of Classifiers through Fuzzy Ensemble Learning”, International Symposium on Computational Intelligence and Design, IEEE Computational Intelligence Society, 8 December 2018.
  • “J-measure Based Pruning for Advancing Classification Performance of Information Entropy Based Rule Generation”, International Conference on Machine Learning and Cybernetics, IEEE Systems, Man and Cybernetics Society, 16 July 2018.
  • “Feature Analysis on the Containment Time for Cybersecurity Incidents”, International Conference on Machine Learning and Cybernetics, IEEE Systems, Man and Cybernetics Society, 16 July 2018.
  • “Algebraic Fusion of Multiple Classifiers for Handwritten Digits Recognition”, International Conference on Machine Learning and Cybernetics, IEEE Systems, Man and Cybernetics Society, 16 July 2018.
  • Suspended Accounts: A Source of Tweets with Disgust and Anger Emotions for Augmenting Hate Speech Data Sample”, International Conference on Machine Learning and Cybernetics, IEEE Systems, Man and Cybernetics Society, 16 July 2018.
  • “Improving Imbalanced Question Classification Using Structured Smote Based Approach”, International Conference on Machine Learning and Cybernetics, IEEE Systems, Man and Cybernetics Society, 16 July 2018.
  • “An Empirical Study of Shape Recognition in Ensemble Learning Context”, International Conference on Machine Learning and Cybernetics, IEEE Systems, Man and Cybernetics Society, 16 July 2018.
  • “Text Classification for Suicide Related Tweets”, International Conference on Machine Learning and Cybernetics, IEEE Systems, Man and Cybernetics Society, 16 July 2018.
  • “Suicide Related Text Classification with Prism Algorithm”, International Conference on Machine Learning and Cybernetics, IEEE Systems, Man and Cybernetics Society, 16 July 2018.
  • “Multi-task Feature Selection for Advancing Performance of Image Segmentation”, International Conference on Machine Learning and Cybernetics, IEEE Systems, Man and Cybernetics Society, 17 July 2018.
  • “Fuzzy Rule Based Systems for Gender Classification from Blog Data”, International Conference on Advanced Computational Intelligence, IEEE Systems, Man and Cybernetics Society, 30 March 2018.
  • "Granular Computing Based Machine Learning: A Big Data Processing Approach", Invited Talk at Data and Knowledge Engineering Research Seminar, School of Computer Science and Informatics, Cardiff University, UK, 27 November 2017.
  • "Granular Computing Based Machine Learning for Intelligent Processing of Big Data", Invited Lecture at Department of Automation, Yanshan University, China, 7 August 2017.
  • “Decision Tree Learning Based Feature Evaluation and Selection for Image Classification”, International Conference on Machine Learning and Cybernetics, IEEE Systems, Man and Cybernetics Society, China, 10 July 2017.
  • “Virtual Topology Partitioning Towards An Efficient Failure Recovery of Software Defined Networks”, International Conference on Machine Learning and Cybernetics, IEEE Systems, Man and Cybernetics Society, China, 10 July 2017.
  • “Domain Specific Syntax Based Approach for Text Classification in Machine Learning Context”, International Conference on Machine Learning and Cybernetics, IEEE Systems, Man and Cybernetics Society, China, 10 July 2017.
  • “Granular Computing Based Machine Learning for Processing of Big Data”, School of Computing Research Seminar, University of Portsmouth, UK, 25 January 2017.
  • “Complexity Control in Rule Based Models for Classification in Machine Learning Context”, UK Workshop on Computational Intelligence, Springer, UK, 7 September 2016.
  • “The Future of Artificial Intelligence: A Machine Learning Perspective”, Invited Lecture at the Institution of Engineering and Technology, IET Beijing Office, China, 2 September 2016.
  • “Nature and Biology Inspired Approach of Classification towards Reduction of Bias in Machine Learning”, International Conference on Machine Learning and Cybernetics, IEEE Systems, Man and Cybernetics Society, South Korea, 11 July 2016.
  • “Reduction of Bias in Machine Learning by Nature and Biology Inspired Approach”, Faculty of Technology Research Conference, University of Portsmouth, UK, 7 June 2016.
  • “Writing a Journal Article, Book Chapter and Research Monograph”, Graduate School Development Programme Workshop, University of Portsmouth, UK, 28 January 2016.
  • “Rule Based Systems for Big Data: A Machine Learning Approach”, University of Portsmouth Computing Seminar, University of Portsmouth, UK, 30 September 2015.
  • “Hybrid Ensemble Learning Approach for Generation of Classification Rules”, International Conference on Machine Learning and Cybernetics, IEEE Systems, Man and Cybernetics Society, China, 14 July 2015.
  • “Reduction of Bias and Variance by Ensemble Learning Approach”, Faculty of Technology Research Conference, University of Portsmouth, UK, 3 June 2015.
  • “Challenges and Opportunities of Machine Learning”, Invited Talk at the Institute of Cosmology and Gravitation Research Seminar, University of Portsmouth, UK, 21 April 2015.
  • “Reduction of Bias and Variance in Machine Learning”, School of Computing Student Conference, University of Portsmouth, UK, 18 March 2015.
  • “Data Mining and Machine Learning: Scientific and Philosophical Perspectives”, School of Computing Research Seminar, University of Portsmouth, UK, 7 January 2015.
  • “Construction of Rule Based Systems in Machine Learning Context”, Faculty of Technology Research Conference, University of Portsmouth, UK, 3 July 2014.
  • “Rule Based Systems: A Machine Learning Approach”, University of Portsmouth Computing Seminar, University of Portsmouth, UK, 26 March 2014.
  • “Knowledge Discovery and Predictive Modelling by Rule Based Networks”, School of Computing Research Seminar, University of Portsmouth, UK, 9 October 2013.
  • “Generation, Simplification and Representation of Classification Rules”, Faculty of Technology Research Conference, University of Portsmouth, UK, 26 June 2013.
  • “Healthcare Process Modelling by Rule Based Networks”, Healthy Computing Workshop, University of Portsmouth, UK, 22 May 2013.

Committees and reviewing

External committees

  • Programme Chair of the 2019 International Conference on Image, Video Processing and Artificial Intelligence
  • Special Session Chair of the 2019 International Conference on Machine Learning and Cybernetics
  • Special Session Chair of the 2019 International Conference on Wavelet Analysis and Pattern Recognition
  • Member of the Programme Committee of the 2019 International Conference on Machine Learning and Cybernetics
  • Member of the Programme Committee of the 2018 International Symposium on Computational Intelligence and Design
  • Member of the Programme Committee of the 2018 IEEE International Conference on Systems, Man and Cybernetics
  • Member of the Programme Committee of the 2018 International Conference on Machine Learning and Cybernetics
  • Member of the Programme Committee of the 2018 International Conference on Advanced Computational Intelligence
  • Member of the Programme Committee of the 2017 IEEE International Workshop on Complex Systems and Networks
  • Member of the Programme Committee of the 2017 UK Workshop on Computational Intelligence
  • Member of the Programme Committee of the 2017 International Conference on Machine Learning and Cybernetics
  • Member of the Programme Committee of the 2017 IET International Conference on Biomedical Image and Signal Processing
  • Member of the Programme Committee of the 2017 International Conference on Advanced Computational Intelligence
  • Member of the Programme Committee of the 2016 IEEE Symposium Series on Computational Intelligence
  • Member of the Programme Committee of the 2016 UK Workshop on Computational Intelligence
  • Member of the Programme Committee of the 2016 International Conference on Human System Interaction

Editorship

  • Associate Editor, Granular Computing, Springer
  • Lead Guest Editor, Special Issue Entitled "Granular Computing Based Machine Learning for Unstructured Data Processing" in Ganular Computing, Springer

Reviewers of Journals, Books and Conferences

  • Transactions on Fuzzy Systems, IEEE.
  • Transactions on Systems, Man and Cybernetics: Systems, IEEE.
  • Information Sciences, Elsevier.
  • Granular Computing, Springer.
  • Fuzzy Sets and Systems, Elsevier.
  • Applied Soft Computing, Elsevier.
  • IEEE Access.
  • International Journal of Machine Learning and Cybernetics, Springer.
  • International Journal of Fuzzy Systems, Springer.
  • Journal of Intelligent and Fuzzy Systems, IOS Press.
  • International Journal of Uncertainty, Fuzziness and Knowledge Based Systems, World Scientific Publishing.
  • International Journal of Computational Intelligence Systems, Atlantis Press.
  • International Journal of Knowledge-Based and Intelligent Engineering Systems, IOS Press.
  • Transactions on Computers, WSEAS.
  • Transactions on Mathematics, WSEAS.
  • The 9th International Conference on Advanced Computational Intelligence, 4-6 February 2017, Doha, Qatar, IEEE.
  • The 7th IEEE Symposium Series on Computational Intelligence, 6-9 December 2016, Athens, Greece.
  • Conference Proceedings entitled “Advances in Computational Intelligence Systems: Contributions Presented at the 16th UK Workshop on Computational Intelligence, September 7–9, 2016, Lancaster, UK”, Springer.
  • The 9th International Conference on Human System Interaction, 6-8 July 2016, Portsmouth, UK, IEEE.
  • Edited Volume entitled “Data Science and Big Data: An Environment of Computational Intelligence”, Studies in Computational Intelligence, Springer.
  • Edited Volume entitled “Sentiment Analysis and Ontology Engineering: An Environment of Computational Intelligence”, Studies in Computational Intelligence, Springer.
  • The 8th International Conference on Intelligent Robotics and Applications, 24-27 August 2015, Portsmouth, UK, Springer.
  • Edited Volume entitled “Granular Computing and Decision Making: Interactive and Iterative Approaches”, Studies in Big Data, Springer.
  • Edited Volume entitled “Information Granularity, Big Data and Computational Intelligence”, Studies in Big Data, Springer.
  • Conference Proceeding entitled “Engineering Applications of Neural Networks: 15th International Conference, EANN 2014, Sofia, Bulgaria, September 5-7, 2014”, Springer.

2019

2018

2017

Research Interests

  • Machine Learning
  • Rule Based Systems
  • Intelligent Systems
  • Fuzzy Systems
  • Data Mining
  • Computational Intelligence
  • Pattern Recognition
  • Cyber Security
  • Cyber Crime
  • Cyber Bullying
  • Cyber Hate
  • Big Data
  • Granular Computing

Research projects

  • 06/2018 - present, Research Associate, Research and Development (RAND) Project entitled “Understanding online hate speech as a motivator and predictor of hate crime”.
  • 06/2017 - 06/2018, Research Associate, Economic and Social Research Council (ESRC) Project entitled “Centre for Cyberhate Research and Policy”.
  • 06/2016 - 05/2017, Research Associate, Research Development Fund (RDF) Project entitled “Developing a collaborative research programme on computational models for emotion detection and their applications to online social interactions issues such as cyberbullying”.
  • 03/2016 - 05/2016, Research Assistant, Knowledge Transfer Partnership (KTP) Project entitled “Big Data Mining for Business Intelligence Horizon Scanning”.
  • 02/2013 - 11/2015, Research Student, PhD Thesis entitled “Rule Based Systems for Classification in Machine Learning Context”.
  • 06/2012 - 09/2012, Postgraduate Taught Student, MSc Project and Dissertation entitled “Module Recommender Systems for University”.
  • 11/2010 - 07/2011, Final Year Undergraduate and Research Assistant, Industry Research Project entitled “Pocket Data Mining”.