Overview

I joined the Computer Science department as Senior Lecturer in Computer Science following several years as a Lecturer at the University of Plymouth. My research interests lie on the interface between multi-objective optimisation, evolutionary computation, explainable AI, and hyper-heuristics.

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Publications

_{Copyright Notice: Any articles made available for download are for personal use only. Any other use requires prior permission of the author and the copyright holder.}

| 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 |

2024

• Walter M, Manikowski P, Craven M, Walker D. (2024) Explaining Optimisation of Offshore Wind Farms using Metaheuristics, Handbook of Formal Optimization.

2023

• Sadler S, Rahat A, Walker D, Archambault D. (2023) Extrema Graphs: Fitness Landscape Analysis to the Extreme!, GECCO '23 Companion: Companion Conference on Genetic and Evolutionary Computation, Proceedings of the Companion Conference on Genetic and Evolutionary Computation, DOI:10.1145/3583133.3596343. [PDF]
• Al-Saadi M, Khan A, Kelefouras V, Walker DJ, Al-Saadi B. (2023) SDN-Based Routing Framework for Elephant and Mice Flows Using Unsupervised Machine Learning, Network, volume 3, no. 1, pages 218-238, DOI:10.3390/network3010011. [PDF]
• Walter MJ, Barrett A, Walker DJ, Tam K. (2023) Adversarial AI Testcases for Maritime Autonomous Systems, AI, Computer Science and Robotics Technology, volume 2, DOI:10.5772/acrt.15. [PDF]

2022

• Bacardit J, Brownlee AEI, Cagnoni S, Iacca G, McCall J, Walker D. (2022) The intersection of evolutionary computation and explainable AI, GECCO '22: Genetic and Evolutionary Computation Conference, Proceedings of the Genetic and Evolutionary Computation Conference Companion, DOI:10.1145/3520304.3533974. [PDF]
• Walter MJ, Walker DJ, Craven MJ. (2022) An explainable visualisation of the evolutionary search process, GECCO '22: Genetic and Evolutionary Computation Conference, Proceedings of the Genetic and Evolutionary Computation Conference Companion, DOI:10.1145/3520304.3533984. [PDF]
• Ross JAJ, Tam K, Walker DJ, Jones KD. (2022) Towards a Digital Twin of a Complex Maritime Site for Multi-Objective Optimization, 2022 14th International Conference on Cyber Conflict: Keep Moving! (CyCon), 31st May - 3rd Jun 2022, 2022 14th International Conference on Cyber Conflict: Keep Moving! (CyCon), DOI:10.23919/cycon55549.2022.9811082. [PDF]
• Walter MJ, Walker DJ, Craven MJ. (2022) Visualizing Population Dynamics to Examine Algorithm Performance, IEEE Transactions on Evolutionary Computation, volume 26, no. 6, pages 1501-1510, DOI:10.1109/tevc.2022.3157143. [PDF]
• Wood Z, Walker D, Parry G. (2022) A computational method to track the evolution of business models in the Digital Economy, Proceedings of the Annual Hawaii International Conference on System Sciences, volume 2022-January, pages 1300-1309.
• Milne-Ives M, Fraser LK, Khan A, Walker D, van Velthoven MH, May J, Wolfe I, Harding T, Meinert E. (2022) Life Course Digital Twins-Intelligent Monitoring for Early and Continuous Intervention and Prevention (LifeTIME): Proposal for a Retrospective Cohort Study, JMIR Res Protoc, volume 11, no. 5, DOI:10.2196/35738. [PDF]

2021

• Varga MN, Gaudl SE, Walker DJ. (2021) Many-objective population visualisation with geons, GECCO '21: Genetic and Evolutionary Computation Conference, Proceedings of the Genetic and Evolutionary Computation Conference Companion, DOI:10.1145/3449726.3463162. [PDF]
• Manikowski PL, Walker DJ, Craven MJ. (2021) Multi-Objective Optimisation of the Benchmark Wind Farm Layout Problem, Journal of Marine Science and Engineering, volume 9, no. 12, pages 1376-1376, DOI:10.3390/jmse9121376. [PDF]
• Al-Saadi M, Khan A, Kelefouras V, Walker DJ, Al-Saadi B. (2021) Unsupervised Machine Learning-Based Elephant and Mice Flow Identification, INTELLIGENT COMPUTING, VOL 2, volume 284, pages 357-370, DOI:10.1007/978-3-030-80126-7_27. [PDF]

2020

• Walter M, Walker D, Craven M. (2020) Visualising Evolution History in Multi- and Many-objective Optimisation, Parallel Problem Solving from Nature.
• Walker DJ, Craven MJ. (2020) Identifying good algorithm parameters in evolutionary multi- and many-objective optimisation: A visualisation approach, Applied Soft Computing, volume 88, pages 105902-105902, article no. 105902, DOI:10.1016/j.asoc.2019.105902. [PDF]

2019

• Oudah H, Ghita B, Bakhshi T, Alruban A, Walker DJ. (2019) Using Burstiness for Network Applications Classification, Journal of Computer Networks and Communications, volume 2019, pages 1-10, DOI:10.1155/2019/5758437. [PDF]
• Johns M, Mahmoud H, Walker D, Ross N, Keedwell EC, Savic D. (2019) Augmented Evolutionary Intelligence: Combining Human and Evolutionary Design for Water Distribution Network Optimisation, Genetic and Evolutionary Computing Conference, GECCO 2019, Prague, Czech Republic, 13th - 17th Jul 2019.

2018

• Walker DJ. (2018) Visualisation with Treemaps and Sunbursts in Evolutionary Many-objective Optimisation, Genetic Programming and Evolvable Machines.
• Johns M, Walker DJ, Keedwell E, Savic D. (2018) Interactive Visualisation of Water Distribution Network Optimisation, International Conference on Hydroinformatics (HIC 2018), 1st - 6th Jul 2018.
• Walker DJ, Johns M, Keedwell E, Savic D. (2018) Generating Heuristics to Mimic Experts in Water Distribution Network Optimisation, Computing and Control in the Water Industry (CCWI 2018), 23rd - 25th Jul 2018.
• Walker DJ, Craven M. (2018) Visualising the Operation of Evolutionary Algorithms Optimising Water Distribution Network Design Problems, 13th International Hydroinformatics Conference.
• Walker D, Johns M, Keedwell E, Savic D. (2018) Towards Interactive Evolution: A Distributed Optimiser for Multi- objective Water Distribution Network Design, 13th International Hydroinformatics Conference (HIC 2018).
• Walker DJ, Craven MJ. (2018) Toward the Online Visualisation of Algorithm Performance for Parameter Selection, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), volume 10784 LNCS, pages 547-560, DOI:10.1007/978-3-319-77538-8_38.

2016

• Walker DJ, Keedwell, Savic. (2016) Multi-objective Optimisation of a Water Distribution Network with a Sequence-based Selection Hyper-heuristic, Computing and Control for the Water Industry 2016, Amsterdam, 7th - 9th Nov 2017.
• Walker D, Fieldsend J, Everson R. (2016) Visualisation Methods in Genetic and Evolutionary Computation (VizGEC 2016) chairs' welcome & organization, GECCO 2016 Companion - Proceedings of the 2016 Genetic and Evolutionary Computation Conference, DOI:10.1145/2908961.2931743.
• Walker DJ, Keedwell EK. (2016) Towards Many-objective Optimisation with Hyper-heuristics: Identifying Good Heuristics with Indicators, PPSN 2016 14th International Conference on Parallel Problem Solving from Nature, Edinburgh Scotland, 17th - 21st Sep 2016, Lecture Notes in Computer Science.
• Walker DJ, Keedwell EK. (2016) Multi-objective Optimisation with a Sequence-based Selection Hyper-heuristic, The Genetic and Evolutionary Computation Conference (GECCO 2016), Denver, Colorado, Usa, 20th - 24th Jul 2016.

2015

• Walker D, Everson R, Fieldsend J. (2015) Session details: VizGEC'15 Workshop, Proceedings of the Companion Publication of the 2015 Annual Conference on Genetic and Evolutionary Computation, DOI:10.1145/3251107.
• Walker D, Creaco E, Vamvakeridou-Lyroudia L, Farmani R, Kapelan Z, Savić D. (2015) Forecasting domestic water consumption from smart meter readings using statistical methods and artificial neural networks, Procedia Engineering, volume 119, no. 1, pages 1419-1428, DOI:10.1016/j.proeng.2015.08.1002.
• Walker DJ. (2015) Visualising Many-objective Populations with Treemaps, GECCO 2015 - Proceedings of the 17th International Conference on Genetic and Evolutionary Computation Companion, Madrid, 11th - 15th Jul 2015.
• Walker DJ, Jakovljevic D, Savic D, Radovanovic M. (2015) Multi-criterion Water Quality Analysis of the Danube River in Serbia: A Visualisation Approach, Water Research, volume 79, pages 158-172, DOI:10.1016/j.watres.2015.03.020. [PDF]

2014

• Walker D, Everson R, Fieldsend J. (2014) Session details: Workshop: visualisation methods in genetic and evolutionary computation, Proceedings of the Companion Publication of the 2014 Annual Conference on Genetic and Evolutionary Computation, DOI:10.1145/3250288.
• Walker D, Keedwell EC, Savic D, Kellagher R. (2014) An Artificial Neural Network-based Rainfall Runoff Model for Improved Drainage Network Modelling, 11th International Conference on Hydroinformatics, New York, 17th - 21st Aug 2014.
• Everson RM, Walker DJ, Fieldsend JE. (2014) Life on the Edge: Characterising the Edges of Mutually Non-dominating Sets, Evolutionary Computation, volume 22, no. 3, pages 479-501, DOI:10.1162/EVCO_a_00124. [PDF]

2013

• Walker D, Everson R, Fieldsend J. (2013) Session details: Visualisation methods in genetic and evolutionary computation (VizGEC 2013), Proceedings of the 15th annual conference companion on Genetic and evolutionary computation, DOI:10.1145/3253589.
• Everson RM, Walker DJ, Fieldsend JE. (2013) Edges of Mutually Non-dominating Sets, Genetic and Evolutionary Computation Conference, GECCO'13, Amsterdam.
• Walker DJ, Everson RM, Fieldsend JE. (2013) Visualising Mutually Non-dominating Solution Sets in Many-objective Optimisation, IEEE Transactions on Evolutionary Computation, volume 17, no. 2, pages 165-184, DOI:10.1109/TEVC.2012.2225064. [PDF]

2012

• Walker D, Everson R, Fieldsend J. (2012) Session details: Visualisation methods for genetic and evolutionary computation (VizGEC), Proceedings of the 14th annual conference companion on Genetic and evolutionary computation, DOI:10.1145/3245076.
• McClymont K, Walker DJ, Dupenois M. (2012) The Lay of the Land: a Survey of Problem Understanding, GECCO (Companion), Philadelphia, Pa, Usa.
• Walker DJ, Fieldsend JE, Everson RM. (2012) Visualising many-objective populations, GECCO (Companion), pages 451-458. [PDF]

2011

• McClymont K, Walker DJ, Keedwell EC, Everson RM, Fieldsend JE, Savic DA, Randall-Smith M. (2011) Novel Methods for Ranking District Metered Areas for Water Distribution Network Maintenance Scheduling, Eleventh International Conference on Computing and Control for the Water Industry (CCWI 2011), Exeter, Uk.
• McClymont K, Walker D, Keedwell E, Everson R, Fieldsend JE, Savic D, Randall-Smith M. (2011) Novel Methods for Ranking District Metered Areas for Water Distribution Network Maintenance Scheduling, CCWI, Exeter, 5th - 7th Sep 2011. [PDF]
• Walker DJ, Everson RM, Fieldsend JE. (2011) Rank-based dimension reduction for many-criteria populations, Genetic and Evolutionary Computation Conference, GECCO'11 - Companion Publication, pages 107-108, DOI:10.1145/2001858.2001919.

2010

• Walker DJ, Everson RM, Fieldsend JE. (2010) Ordering Multi-objective Populations with the Power Index, Postgraduate Conference for Computing: Applications and Theory (PCCAT 2010), Exeter, Uk.
• Walker DJ, Everson RM, Fieldsend JE. (2010) Visualisation and ordering of many-objective populations, IEEE Congress on Evolutionary Computation, pages 1-8. [PDF]

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