publications on Non-Standard Computation

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in preparation

Tian Gan, Susan Stepney, Martin Trefzer.
Combining Multiple Inputs to a Delay-line Reservoir Computer: Control of a Forced Van der Pol Oscillator System. (in preparation)

Penn Faulkner Rainford, Aalap Mogre, Victor Velasco-Berrelleza, Charles J. Dorman, Sarah Harris, Carsten Kröger, Susan Stepney.
A π-calculus model of Supercoiling DNA Circuits. (in preparation)

Penn Faulkner Rainford, Susan Stepney.
Exploring the potential of a Boolean Circuit with Novelty Search. (in preparation)

Justin Robertson, Susan Stepney, Angelika Sebald.
Artificial Chemistries based on Boolean Networks. (in preparation)

Susan Stepney, Steve A. Smith, Jenny Owen.
HashLife entropy. (in preparation)

Riv Waldegrave, Susan Stepney, Martin Trefzer.
Stopping Graphs Growing. (in preparation)

Chester Wringe, Susan Stepney, Martin Trefzer.
Reservoir Computing Benchmarks: a review. (in preparation)

submitted

Matthew Dale, Sarah Jenkins, Richard F. L. Evans, Simon O'Keefe, Angelika Sebald, Susan Stepney, Martin Trefzer.
Reservoir computing with thin-film ferromagnetic devices, arXiv:2101.12700 [cs.ET]. (submitted)

accepted / in press

Matthew Dale, Richard F. L. Evans, Angelika Sebald, Susan Stepney.
Reservoir Computing with nanowire exchange-coupled spin torque oscillator arrays.
UCNC 2023, Jacksonville, Florida, USA, March 2023. (in press)

David Griffin, Susan Stepney, Ian T. Vidamour.
Exploring the Robustness of Magnetic Ring Arrays Reservoir Computing with Linear Field Calibration.
UCNC 2023, Jacksonville, Florida, USA, March 2023. (in press)

Jess Park, Susan Stepney, Irene d'Amico.
Spatial correlations in the qubit properties of D-Wave 2000Q measured and simulated qubit networks.
UCNC 2023, Jacksonville, Florida, USA, March 2023. (in press)

Susan Stepney.
R.U.R. and the test of time.
In Jitka Cejkova (ed) Karel Čapek's R.U.R. and the Vision of Artificial Life, MIT Press, 2023. (in press)

Susan Stepney.
Life as a Cyber-Bio-Physical System (keynote paper). GPTP 2022, Ann Arbor, MI, USA, June 2022. Springer 2023. (in press)

Susan Stepney, Simon Hickinbotham.
On the Open-endedness of detecting Open-endedness. Artificial Life (in press)

Chester Wringe, Susan Stepney, Martin Trefzer.
Modelling and Evaluating Restricted ESNs.
UCNC 2023, Jacksonville, Florida, USA, March 2023. (in press)

Zongyu Yin, Federico Reuben, Susan Stepney, Tom Collins.
Deep learning's shallow gains: A comparative evaluation of algorithms for automatic music generation. Machine Learning (accepted)

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2023

journal papers

Dan A. Allwood, Matthew O. A. Ellis, David Griffin, Thomas J. Hayward, Luca Manneschi, Mohammad F. Kh. Musameh, Simon O'Keefe, Susan Stepney, Charles Swindells, Martin A. Trefzer, Eleni Vasilaki, Guru Venkat, Ian Vidamour, Chester Wringe.
A perspective on physical reservoir computing with nanomagnetic devices.
Applied Physics Letters 122:040501, 2023.

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2022

journal papers

Ian T. Vidamour, Matthew O. A. Ellis, David Griffin, Guru Venkat, Charles Swindells, Richard W. S. Dawidek, Thomas J. Broomhall, Nina-Juliane Steinke, Joshaniel F. K. Cooper, Francisco Maccherozzi, Sarnjeet S. Dhesi, Susan Stepney, Eleni Vasilaki, Dan A. Allwood, Thomas J. Hayward.
Quantifying the Computational Capability of a Nanomagnetic Reservoir Computing Platform with Emergent Magnetization Dynamics.
Nanotechnology, 33:485203, 2022

Zongyu Yin, Federico Reuben, Susan Stepney, Tom Collins.
Measuring When a Music Generation Algorithm Copies Too Much: The Originality Report, Cardinality Score, and Symbolic Fingerprinting by Geometric Hashing.
SN Computer Science, 3:340, 2022

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2021

book chapters

Matthew Dale, Julian F. Miller, Susan Stepney, Martin Trefzer.
Reservoir Computing in Material Substrates.
in Kohei Nakajima, Ingo Fischer, eds, Reservoir Computing: Theory, Physical Implementations and Applications, pp.141–166, Springer, 2021

Marina Sanz Orell, James Bown, Susan Stepney, Richard Walsh, Alan Winfield.
Robot Narratives.
in Andrew Adamatzky, ed, Handbook of Unconventional Computing volume I: theory and algorithms, pp.221-246. World Scientific, 2021

journal papers

Timothy Atkinson, Detlef Plump, Susan Stepney.
Evolving graphs with semantic neutral drift
Natural Computing, 20(1):127–143, 2021

Matthew Dale, Simon O'Keefe, Angelika Sebald, Susan Stepney, Martin Trefzer.
Reservoir computing quality: connectivity and topology.
Natural Computing, 20(2):205–216, 2021

Simon Hickinbotham, Susan Stepney, Paulien Hogeweg.
Nothing in evolution makes sense except in the light of parasitism: evolution of complex replication strategies.
Royal Society Open Science, 8(8):210441, 2021

Susan Stepney, Viv Kendon.
The representational entity in physical computing.
Natural Computing, 20(2):233–242, 2021

Hiromi Yasuda, Philip R. Buskohl, Andrew Gillman, Todd D. Murphey, Susan Stepney, Richard A. Vaia, Jordan R. Raney.
Mechanical computing.
Nature, 598:39–48, 2021.

refereed workshop and conference papers

Matthew Dale, Simon O'Keefe, Angelika Sebald, Susan Stepney, Martin Trefzer.
Computing with magnetic thin films: using film geometry to improve dynamics.
UCNC 2021, Helsinki, Finland, October 2021. LNCS 12984:19-34. Springer 2021

Tian Gan, Susan Stepney, Martin Trefzer.
Tradeoffs with physical delay feedback reservoir computing.
SSCI 2021, Orlando, FL, USA, December 2021 (online). IEEE 2021.

Susan Stepney.
Modelling and measuring open-endedness.
The Fourth Workshop on Open-Ended Evolution (OEE4),
at ALife 2021, Prague, Czech Republic (online), 2021

Susan Stepney.
Non-instantaneous information transfer in physical reservoir computing.
UCNC 2021, Helsinki, Finland, October 2021. LNCS 12984: 164-176. Springer 2021

Susan Stepney, Simon Hickinbotham.
What is a Parasite? Defining reaction and network properties in an open ended automata chemistry.
ALife 2021, Prague, Czech Republic (online), pp.598-606. MIT Press, 2021.

Zongyu Yin, Federico Reuben, Susan Stepney, Tom Collins.
“A Good Algorithm Does Not Steal – It Imitates”: The Originality Report as a Means of Measuring when a Music Generation Algorithm Copies Too Much.
EvoMusArt, April 2021, Seville, Spain (online), LNCS 12693, pp. 360–375, Springer, 2021.
[best paper award nominee]

other

Susan Stepney.
Computing with Open Dynamical Systems (keynote paper).
2021 IEEE Conference on Cognitive and Computational Aspects of Situation Management (CogSIMA), May 2021, Tallin, Estonia (online), pp139–143, IEEE, 2021.

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2020

journal papers

Timothy Atkinson, Detlef Plump, Susan Stepney.
Horizontal Gene Transfer for Recombining Graphs.
Genetic Programming and Evolvable Machines, 21:321-347 2020

Penelope Faulkner Rainford, Angelika Sebald, Susan Stepney.
MetaChem: An algebraic framework for Artificial Chemistries
Artificial Life, 26(2):153–195 2020

refereed workshop and conference papers

Matthew Dale, Susan Stepney, Martin Trefzer.
Designing Computational Substrates using Open-Ended Evolution. (extended abstract)
ALife 2020, Montreal, Canada (virtual), July 2020, pp.665-667. MIT Press, 2020

Susan Stepney, Simon Hickinbotham.
Innovation, Variation, and Emergence in an Automata Chemistry.
ALife 2020, Montreal, Canada (virtual), July 2020, pp.753-760. MIT Press, 2020.

other

Susan Stepney.
R.U.R. a zkouška času.
In Jitka Cejkova (ed) Robot 100: Sto rozumů, University of Chemistry and Technology Prague, 2020. (Czech translation)

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2019

book chapters

Susan Stepney.
Digital Emergence.
in: Sophie Gibb, Robin Findlay Hendry, Tom Lancaster, editors. Routledge Handbook of Emergence. Chapter 26, pp.329–338. Routledge, 2019

Susan Stepney, Ada Diaconescu, René Doursat, Jean-Louis Giavitto, Julian F. Miller, Antoine Spicher.
Evolving, Growing, and Gardening Cyber-Physical Systems
In Rachel Armstrong (editor), Experimental Architecture, pp.89–101. Routledge, 2019

journal papers

Matthew Dale, Julian F. Miller, Susan Stepney, Martin Trefzer.
A Substrate-Independent Framework to Characterise Reservoir Computers
Proceedings of the Royal Society A, 475(2226), 2019

refereed workshop and conference papers

Timothy Atkinson, Detlef Plump, Susan Stepney.
Evolving Graphs Using Horizontal Gene Transfer.
GECCO 2019, Prague, Czech Republic, July 2019, pp.968–976, ACM Press, 2019

Matthew Dale, Jack Dewhirst, Simon O'Keefe, Angelika Sebald, Susan Stepney, Martin Trefzer.
The role of structure and complexity on Reservoir Computing quality.
UCNC 2019, Tokyo, Japan, June 2019, LNCS 11493:52–64, Springer, 2019

Penelope Faulkner Rainford, Angelika Sebald, Susan Stepney.
An Object Oriented Implementation of the MetaChem framework.
ALife 2019, Newcastle, UK, July 2019, pp.119-126. MIT Press, 2019

Susan Stepney, Viv Kendon.
The role of the representational entity in physical computing.
UCNC 2019, Tokyo, Japan, June 2019, LNCS 11493:219–231, Springer, 2019

Isaac Watson, Angelika Sebald, Susan Stepney.
A Meta-Atom Based Sub-Symbolic Artificial Chemistry.
ALife 2019, Newcastle, UK, July 2019, pp.127-134. MIT Press, 2019

other

Simon Hickinbotham, Susan Stepney, Jon Timmis.
ECAL 2015 special issue editorial
Natural Computing 18(1):1–3, 2019

Susan Stepney.
Visualising high-dimensional state spaces with “tuple plots”
arXiv:1905.08729 [physics.data-an], 2019

Susan Stepney.
Co-designing the computational model and the computing substrate.
UCNC 2019, Tokyo, Japan, June 2019, LNCS 11493:5–14, Springer, 2019 (invited talk)

Susan Stepney, Segey Verlan.
UCNC 2018 special issue editorial.
Natural Computing 18(3):513–514, 2019

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2018

books / proceedings

Susan Stepney, Andrew Adamatzky, editors.
Inspired by Nature. Springer, 2018

Susan Stepney, Steen Rasmussen, Martyn Amos, editors.
Computational Matter. Springer, 2018

Susan Stepney, Sergey Verlan, editors.
Unconventional Computation and Natural Computation, UCNC 2018, Fontainebleau, France, June 2018.
LNCS 10867. Springer, 2018.

Richard Walsh, Susan Stepney, editors.
Narrating Complexity. Springer, 2018

book chapters

Marco Bernini, Susan Stepney, Merja Polvinen.
Discussion and Comment (A Simple Story of a Complex Mind?).
in Richard Walsh, Susan Stepney, eds, Narrating Complexity, Chapter 8, pp.81-83. Springer, 2018

Hajo Broersma, Susan Stepney, Göran Wendin
Computability and Complexity of Unconventional Computing Devices
in: Susan Stepney, Steen Rasmussen, Martyn Amos, editors. Computational Matter. Chapter 11, pp.185-229. Springer, 2018

Leo Caves, Ana Teixeira de Melo, Susan Stepney, Emma Uprichard.
Time will Tell: narrative expressions of time in a complex world.
in Richard Walsh, Susan Stepney, eds, Narrating Complexity, Chapter 19, pp.269-284. Springer, 2018

Penelope Faulkner, Mihail Krastev, Angelika Sebald, Susan Stepney.
Sub-Symbolic Artificial Chemistries.
in Susan Stepney, Andrew Adamatzky, eds, Inspired by Nature, Springer, 2018

Dominic Horsman, Viv Kendon, Susan Stepney.
Abstraction/Representation Theory and the Natural Science of Computation
in Michael E. Cuffaro, Samuel C. Fletcher, eds, Physical Perspectives on Computation, Computational Perspectives on Physics. pp.127-149. Cambridge University Press, 2018

Zoran Konkoli, Susan Stepney, Hajo Broersma, Paolo Dini, Chrystopher Nehaniv.
Philosophy of Computation
in: Susan Stepney, Steen Rasmussen, Martyn Amos, editors. Computational Matter. Chapter 10, pp.153-184. Springer, 2018

Zoran Konkoli, Stefano Nichele, Matthew Dale, and Susan Stepney.
Reservoir computing with computational matter
in: Susan Stepney, Steen Rasmussen, Martyn Amos, editors. Computational Matter. Chapter 14, pp.269-292. Springer, 2018

John McCaskill, Julian F. Miller, Susan Stepney, Peter Wills
Encoding and representation of information processing in irregular computational matter
in: Susan Stepney, Steen Rasmussen, Martyn Amos, editors. Computational Matter. Chapter 12, pp.231-248. Springer, 2018

Susan Stepney.
Complex Systems for Narrative Theorists.
in Richard Walsh, Susan Stepney, eds, Narrating Complexity, Chapter 3, pp.27-36. Springer, 2018

Susan Stepney, Simon Hickinbotham.
UCOMP Roadmap: Survey, Challenges, Recommendations
in Susan Stepney, Steen Rasmussen, Martyn Amos, editors. Computational Matter. Chapter 2, pp.9-31. Springer, 2018

Susan Stepney, Steen Rasmussen, Martyn Amos.
Introduction to Computational Matter
in Susan Stepney, Steen Rasmussen, Martyn Amos, editors. Computational Matter. Chapter 1, pp.1-8. Springer, 2018

Susan Stepney, Richard Walsh.
From Simplex to Complex Narrative?.
in Richard Walsh, Susan Stepney, eds, Narrating Complexity, Chapter 23, pp.319-322. Springer, 2018

Richard Walsh, Leo Caves, Ana Teixeira de Melo, Susan Stepney, Emma Uprichard.
Discussion and Comment (Time Will Tell).
in Richard Walsh, Susan Stepney, eds, Narrating Complexity, Chapter 20, pp. 285-287. Springer, 2018

Richard Walsh, Susan Stepney.
Introduction and Overview: Who, What, Why.
in Richard Walsh, Susan Stepney, eds, Narrating Complexity, Chapter 1, pp.3-9. Springer, 2018

Richard Walsh, Susan Stepney.
Commentary on contributions.
in Richard Walsh, Susan Stepney, eds, Narrating Complexity, Chapter 22, pp.295-318. Springer, 2018

refereed workshop and conference papers

Timothy Atkinson, Detlef Plump, Susan Stepney.
Evolving Graphs by Graph Programming
EuroGP 2018, Parma, Italy, April 2018. LNCS 10781:35–51, Springer 2018

Timothy Atkinson, Detlef Plump, Susan Stepney.
Probabilistic Graph Programs for Randomised and Evolutionary Algorithms
International Conference on Graph Transformation (ICGT), Toulouse, France, June 2018. LNCS 10887:63–78. Springer, 2018

George Gabriel, Susan Stepney.
Dynamical Music with Musical Boolean Networks
EvoMusArt 2018, Parma, Italy, April 2018. LNCS 10783:18–33. Springer, 2018

Penelope Faulkner Rainford, Angelika Sebald, Susan Stepney.
Modular combinations of Artificial Chemistries.
in ALife 2018, Tokyo, Japan, July 2018, pp.361–367. MIT Press, 2018

other

Guillaume Beslon, Santiago Elena, Paulien Hogeweg, Dominique Schneider, Susan Stepney
Evolving Living Technologies — Insights from the EvoEvo project
SSBSE 2018, Montpellier, France, September 2018, LNCS 11036:46-62, Springer. (invited talk)

Matthew Dale, Julian F. Miller, Susan Stepney, Martin Trefzer.
Characterising Unconventional Computers using Novelty Search
Late breaking abstracts, ALife 2018, Tokyo, Japan, July 2018

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2017

book chapters

Matthew Dale, Julian F. Miller, Susan Stepney.
Reservoir Computing as a model for in materio computing.
in Andrew Adamatzky, ed, Advances in Unconventional Computing, vol 1, pp.533-571, Springer, 2017

Dominic Horsman, Viv Kendon, Susan Stepney, Peter Young.
Abstraction and representation in living organisms: when does a biological system compute?
in Gordana Dodig-Crnkovic, Raffaela Giovagnoli, eds, Representation and Reality in Humans, Other Living Organisms and Intelligent Machines, pp.91-116, Springer, 2017

Susan Stepney.
Introduction to Unconventional Computing
in Eduardo Reck Miranda, ed, Guide to Unconventional Computing for Music, chapter 1, pp.1-21, Springer, 2017

journal papers

Andrew Adamatzky, Selim Akl, Mark Burgin, Cristian S. Calude, José Félix Costa, Mohammad M. Dehshibi, Yukio-Peggio Gunji, Zoran Konkoli, Bruce MacLennan, Bruno Marchal, Maurice Margenstern, Genaro J. Martínez, Richard Mayne, Kenichi Morita, Andrew Schumann, Yaroslav D. Sergeyev, Georgios Ch. Sirakoulis, Susan Stepney, Karl Svozil, Hector Zenil.
East-West Paths to Unconventional Computing,
Progress in Biophysics and Molecular Biology, 131:469-493, 2017.

Edward Clark, Simon Hickinbotham, Susan Stepney.
Semantic Closure Demonstrated by the Evolution of a Universal Constructor Architecture in an Artificial Chemistry
Journal of The Royal Society Interface, 14:20161033, 2017

Dominic Horsman, Susan Stepney, Viv Kendon.
The Natural Science of Computation
Communications of ACM, 60(8):31-34, August 2017

Benjamin Russell, Susan Stepney.
The Geometry of Speed Limiting Resources in Physical Models of Computation.
International Journal of Foundations of Computer Science 28(4):321-333, 2017

Alexander P. Turner, Leo S. D. Caves, Susan Stepney, Andy M. Tyrrell, Michael A. Lones.
Artificial Epigenetic Networks: Automatic Decomposition of Dynamical Control Tasks using Topological Self-Modification.
IEEE Transactions on Neural Networks and Learning Systems, 28(1):218-230, 2017

refereed workshop and conference papers

Timothy Atkinson, Detlef Plump, Susan Stepney.
Probabilistic Graph Programming
Electronic pre-proceedings, GCM 2017, Marburg, Germany, July 2017.

Matthew Dale, Susan Stepney, Julian F. Miller, Martin Trefzer.
Reservoir Computing in Materio: a computational framework for in materio computing
IJCNN 2017, Anchorage, Alaska, USA, May 2017, pp.2178-2185, IEEE Press, 2017

Penelope Faulkner, Angelika Sebald, Susan Stepney.
Tuning Jordan Algebra Artificial Chemistries with Probability Spawning Functions.
ECAL 2017, Lyon, France, September 2017, pp.497-504, MIT Press, 2017

Mihail Krastev, Angelika Sebald, Susan Stepney.
Functional grouping analysis of varying reactor types in the Spiky-RBN AChem.
ECAL 2017, Lyon, France, September 2017, pp.247-254, MIT Press 2017

other

Matthew Dale, Julian F. Miller, Susan Stepney, Martin Trefzer.
Extendible Hardware Platform for Reservoir Computing in materio
Poster abstracts, UCNC 2017, Fayetteville, Arkansas, USA, June 2017

Matthew Dale, Julian F. Miller, Susan Stepney, Martin Trefzer.
Reservoir Computing in materio with LEDs
Poster abstracts, UCNC 2017, Fayetteville, Arkansas, USA, June 2017

Susan Stepney.
Book Review: Artificial Chemistries.
Artificial Life 23(3):449-451, 2017

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2016

book chapters

Susan Stepney.
The Art of Penrose Life.
in Andrew Adamatzky, Genaro Juarez Martinez, eds, Designing Beauty: The Art of Cellular Automata, pp.103-109, Springer, 2016

journal papers

Wolfgang Banzhaf, Bert Baumgaertner, Guillaume Beslon, René Doursat, James A. Foster, Barry McMullin, Vinicius Veloso de Melo, Thomas Miconi, Lee Spector, Susan Stepney, Roger White.
Defining and Simulating Open-Ended Novelty: Requirements, Guidelines, and Challenges.
Theory in Biosciences, 135(3):131-161, 2016

Simon Hickinbotham, Edward Clark, Adam Nellis, Susan Stepney, Tim Clarke, Peter Young.
Maximising the adjacent possible in automata chemistries
Artificial Life Journal, 22(1):49-75, 2016

refereed workshop and conference papers

Matthew Dale, Julian F. Miller, Susan Stepney, Martin Trefzer.
Reservoir Computing in Materio: An Evaluation of Configuration through Evolution
ICES 2016 at SSCI 2016, Athens, Greece, December 2016, IEEE 2016

Matthew Dale, Julian F. Miller, Susan Stepney, Martin Trefzer.
Evolving Carbon Nanotube Reservoir Computers.
UCNC 2016, Manchester, UK, July 2016, LNCS 9726:49–61, Springer, 2016

Penelope Faulkner, Angelika Sebald, Susan Stepney.
Jordan Algebra AChems: Exploiting Mathematical Richness for Open Ended Design.
ALife 2016, Cancun, Mexico, July 2016, pp.582–589, MIT Press, 2016

Simon Hickinbotham, Susan Stepney.
Augmenting Live Coding with Evolved Patterns
EvoMusArt, Porto, Portugal, March 2016, LNCS 9596:31–46, Springer, 2016
[best paper award nominee]

Simon Hickinbotham, Susan Stepney.
Bio-Reflective Architectures for Evolutionary Innovation.
ALife 2016, Cancun, Mexico, July 2016, pp.192–199, MIT Press, 2016

Mihail Krastev, Angelika Sebald, Susan Stepney.
Emergent Bonding Properties in the Spiky RBN AChem.
ALife 2016, Cancun, Mexico, July 2016, pp.600–607, MIT Press, 2016

other

Wolfgang Banzhaf, Guillaume Beslon, Réne Doursat, Susan Stepney.
Open-Endedness: Definitions and Shortcuts (abstract).
The Second Workshop on Open-Ended Evolution, at ALife 2016, Cancun, Mexico, 2pp, 2016

Matthew Dale, Julian F. Miller, Susan Stepney, Martin Trefzer.
Modelling and Training Unconventional in-Materio Computers using Bio-Inspired Techniques (abstract).
Late Breaking Abstracts booklet, ALife 2016, Cancun, Mexico, pp.11–12, 2016

Simon Hickinbotham, Susan Stepney.
Editorial/Introduction to the Artificial Life 2015 Conference Special Issue
Artificial Life 22(4):429-430, 2016

Tim Hoverd, Susan Stepney.
EvoMachina: a novel evolutionary algorithm inspired by bacterial genome reorganisation (abstract).
Late Breaking Abstracts, UCNC 2016, Manchester, UK, 2pp., 2016
[highly commended poster award]

Tim Hoverd, Susan Stepney.
EvoMachina: a novel evolutionary algorithm inspired by bacterial genome reorganisation.
2nd EvoEvo workshop, at CCS 2016, Amsterdam, Netherlands, 2016

Susan Stepney
Report on UCNC 2015: the 14th International Conference on Unconventional Computation and Natural Computation
EATCS Bulletin 118, Feb 2016

Susan Stepney
Report on UCNC 2016: the 15th International Conference on Unconventional Computation and Natural Computation
EATCS Bulletin 120, October 2016

Susan Stepney, Guillaume Beslon.
Open-Endedness: Definitions and Shortcuts.
2nd EvoEvo workshop, at CCS 2016, Amsterdam, Netherlands, 2016

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books / proceedings

Paul Andrews, Leo Caves, René Doursat, Simon Hickinbotham, Fiona Polack, Susan Stepney, Tim Taylor, Jon Timmis, editors.
Proceedings of the European Conference on Artificial Life 2015 (ECAL 2015), York, UK, July 2015.
MIT Press, 2015.

Paul Andrews, Leo Caves, René Doursat, Simon Hickinbotham, Fiona Polack, Susan Stepney, Tim Taylor, Jon Timmis, editors.
Late Breaking Proceedings of the European Conference on Artificial Life 2015, York, UK, July 2015.

journal papers

Viv Kendon, Angelika Sebald, Susan Stepney.
Heterotic Computing: past, present, future.
Philosophical Transactions of the Royal Society A, 373:20140225, 2015

Benjamin Russell, Susan Stepney.
Zermelo Navigation in the Quantum Brachistochrone
Journal of Physics A, 48:115303, 2015

refereed workshop and conference papers

Paul S. Andrews, Susan Stepney.
A Metamodel for the Evolution of Evolution
ECAL 2015, York, UK, July 2015, pp.621–628. MIT Press, 2015

Simon Hickinbotham, Susan Stepney.
Conservation of matter increases evolutionary activity
ECAL 2015, York, UK, July 2015, pp.98–105. MIT Press, 2015

Simon Hickinbotham, Susan Stepney.
Environmental bias forces parasitism in Tierra
ECAL 2015, York, UK, July 2015, pp.294–301. MIT Press, 2015

Chris Timperley, Susan Stepney.
Wallace: An efficient generic evolutionary framework
ECAL 2015, York, UK, July 2015, pp.365–372. MIT Press, 2015

other

Viv Kendon, Angelika Sebald, Susan Stepney.
Heterotic Computing: exploiting hybrid computational devices.
Philosophical Transactions of the Royal Society A, 373:20150091, 2015

Susan Stepney
Report on UCNC 2012: the 11th International Conference on Unconventional Computation and Natural Computation.
EATCS Bulletin, 115:169-171, 2015

Susan Stepney.
Afterword: Mighty Oaks from Little Acorns Grow.
in Martyn Amos, Ra Page, eds, Beta-Life: Stories from an ALife Future, Comma Press, 2015

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journal papers

C. Horsman, Susan Stepney, Rob Wagner, Viv Kendon.
When does a physical system compute?
Proceedings of the Royal Society A, 470(2169) 20140182 2014.

Michael A. Lones, Luis A. Fuente, Alexander P. Turner, Leo S. D. Caves, Susan Stepney, Stephen L. Smith, Andy M. Tyrrell.
Artificial Biochemical Networks: evolving dynamical systems to control dynamical systems.
IEEE Transactions on Evolutionary Computation, 18(2):145-166, 2014

Benjamin Russell and Susan Stepney.
Applications of Finsler Geometry to Speed Limits to Quantum Information Processing.
International Journal of Foundations of Computer Science, 25(4):489-505 2014.

Benjamin Russell, Susan Stepney.
Zermelo Navigation and a Speed Limit to Quantum Information Processing
Physical Review A, 90, 012303, 2014.

Susan Stepney.
Local and global models of physics and computation.
International Journal of General Systems, 4(7):673-681, 2014.

refereed workshop and conference papers

Ali Afshar Dodson, Susan Stepney, Emma Uprichard, Leo Caves.
Using the CoSMoS approach to study Schelling’s Bounded Neighbourhood Model.
CoSMoS Workshop, New York, USA, July 2014, pp.1–12. Luniver Press, 2014

Paul S. Andrews, Susan Stepney.
Using CoSMoS to Reverse Engineer a Domain Model for Aevol.
CoSMoS Workshop, New York, USA, July 2014, pp.61–79. Luniver Press, 2014

C. Horsman, Susan Stepney, Viv Kendon.
When does an unconventional substrate compute?
In 13th International Conference on Unconventional Computation & Natural Computation (UCNC 2014), London, Ontario, Canada, July 2014, Poster Proceedings.
University of Western Ontario Technical Report #758, 2014

Adam Nellis, Susan Stepney.
Computational novelty: Phenomena, mechanisms, worlds.
ALife XIV, New York, USA, July 2014, pp.506–513. MIT Press, 2014

Chris Timperley, Susan Stepney.
Reflective Grammatical Evolution.
ALife XIV, New York, USA, July 2014, pp.71–78. MIT Press, 2014

other

Benjamin Russell, Susan Stepney.
A Geometrical Derivation of a Family of Quantum Speed Limit Results
arXiv:1410.3209 [quant-ph], 2014

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book chapters

Susan Stepney.
Unconventional Computing.
in Werner Dubitzky, Olaf Wolkenhauer, Kwang-Hyun Cho, Hiroki Yokota (eds) Encyclopedia of Systems Biology, pp.2311-15, Springer, 2013

journal papers

Luis A. Fuente, Michael A. Lones, Alexander P. Turner, Susan Stepney, Leo S. D. Caves, Andy M. Tyrrell.
Computational Models of Signalling Networks for Non-linear Control.
BioSystems 112(2):122-130, 2013

Michael A. Lones, Alexander P. Turner, Luis A. Fuente, Susan Stepney, Leo S. D. Caves, Andy M. Tyrrell.
Biochemical Connectionism
Natural Computing, 12(4):453-472, 2013

Alexander P. Turner, Michael A. Lones, Luis A. Fuente, Susan Stepney, Leo S. D. Caves, Andy M. Tyrrell.
The Incorporation of Epigenetics in Artifical Gene Regulatory Networks.
BioSystems 112(2):56-62, 2013

refereed workshop and conference papers

Luis A. Fuente, Michael A. Lones, Alexander P. Turner, Susan Stepney, Leo S. D. Caves, Andy M. Tyrrell.
Adaptive Robotic Gait Control using coupled Artificial Signalling Networks, Hopf Oscillators and Inverse Kinematics.
CEC 2013, Cancun, Mexico, June 2013. IEEE, 2013

Benjamin Russell, Susan Stepney.
Geometric Methods for Analysing Quantum Speed Limits: time-dependent controlled quantum systems with constrained control functions.
12th International Conference on Unconventional Computation & Natural Computation (UCNC 2013), Milan, Italy, July 2013. LNCS 7956:198-208, Springer, 2013

Benjamin Russell, Susan Stepney.
Numerical Analysis of Quantum Speed Limits: controlled quantum spin chain systems with constrained control functions.
12th International Conference on Unconventional Computation & Natural Computation (UCNC 2013), Milan, Italy, July 2013. LNCS 7956:209-219, Springer, 2013

Alexander P. Turner, Michael A. Lones, Luis A. Fuente, Susan Stepney, Leo S. D. Caves, Andy M. Tyrrell.
The Artificial Epigenetic Network.
SSCI, Malaysia, April 2013, pp.66-72, IEEE, 2013

other

Michael Lones, Andy Tyrrell, Susan Stepney, Leo Caves.
Special issue on the frontiers of natural computing
Natural Computing 12(4):441-2, 2013

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2012

book chapters

Susan Stepney.
Nonclassical Computation: a dynamical systems perspective.
in Grzegorz Rozenberg, Thomas Bäck, Joost N. Kok, eds, Handbook of Natural Computing, volume 4, chapter 59, pp.1979-2025, Springer, 2012

journal papers

Martyn Amos, Susan Stepney, Rene Doursat, Francisco J. Vico, Steen Rasmussen.
TRUCE: A Coordination Action for Unconventional Computation.
Int. J. Unconventional Computing, 8(4):333-337, 2012

Matthias Bechmann, Angelika Sebald, Susan Stepney.
Boolean logic gate design principles for unconventional computers: an NMR case study.
Int. J. Unconventional Computing, 8(2):139-159, 2012

Susan Stepney.
Programming Unconventional Computers: dynamics, development, self-reference.
Entropy, 14(10), 1939-1952, 2012

refereed workshop and conference papers

Luis A. Fuente, Michael A. Lones, Alexander P. Turner, Susan Stepney, Leo S. Caves, Andy M. Tyrrell.
Evolved Artificial Signalling Networks for the Control of a Conservative Complex Dynamical System.
9th International Conference on Information Processing in Cells and Tissues (IPCAT 2012) Cambridge, UK, April 2012. LNCS 7223:38-49, Springer 2012

Benjamin Russell and Susan Stepney.
Applications of Optimal Control Theory to Constrained Analogues of the Margolus-Levitin Theorem (abstract).
Physics and Computation 2012, Swansea, UK, August 2012.

Susan Stepney, Samson Abramsky, Matthias Bechmann, Jerzy Gorecki, Viv Kendon, Thomas J. Naughton, Mario J. Perez-Jimenez, Francisco J. Romero-Campero, Angelika Sebald.
Heterotic computing examples with optics, bacteria, and chemicals.
11th International Conference on Unconventional Computation & Natural Computation 2012 (UCNC 2012), Orleans, France, September 2012. LNCS 7445:198-209, Springer, 2012

Susan Stepney, Ada Diaconescu, René Doursat, Jean-Louis Giavitto, Taras Kowaliw, Ottoline Leyser, Bruce MacLennan, Olivier Michel, Julian F. Miller, Igor Nikolic, Antoine Spicher, Christof Teuscher, Gunnar Tufte, Francisco J. Vico, Lidia Yamamoto.
Gardening Cyber-Physical Systems. (abstract)
11th International Conference on Unconventional Computation & Natural Computation 2012 (UCNC 2012), Orleans, France, September 2012. LNCS 7445:237-238, Springer, 2012

Susan Stepney, Viv Kendon, Peter Hines, Angelika Sebald.
A Framework for Heterotic Computing.
8th workshop on Quantum Physics and Logic (QPL 2011) Nijmegen, Netherlands, October 2011 EPTCS 95:263-273, 2012

Alexander P. Turner, Michael A. Lones, Luis A. Fuente, Susan Stepney, Leo S. Caves, Andy M. Tyrrell.
Using Artificial Epigenetic Regulatory Networks To Control Complex Tasks Within Chaotic Systems.
9th International Conference on Information Processing in Cells and Tissues (IPCAT 2012) Cambridge, UK, April 2012. LNCS 7223:1-11, Springer 2012

other

Paul S. Andrews, Susan Stepney.
EmergeNET4: engineering emergence
Natural Computing 11(3):415-6, 2012

Simon Hickinbotham, Edward Clark, Susan Stepney, Tim Clarke, Adam Nellis, Mungo Pay, Peter Young
Specification of the stringmol chemical programming language version 0.2,
Technical report YCS-2010-458, University of York, 2012

Susan Stepney.
Unconventional Computer Programming.
Symposium on Natural/Unconventional Computing and Its Philosophical Significance, Birmingham, UK, July 2012 pp.12-15, 2012

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2011

refereed workshop and conference papers

Edward Clark, Simon Hickinbotham, Susan Stepney, Tim Clarke, Adam Nellis, Mungo Pay, Peter Young.
Degeneracy enriches Artificial Chemistry binding systems.
ECAL 2011, Paris, France, August 2011, pp.133-140. MIT Press 2011

Simon Hickinbotham, Susan Stepney, Adam Nellis, Tim Clarke, Ed Clark, Mungo Pay, Peter Young.
Embodied genomes and metaprogramming.
ECAL 2011, Paris, France, August 2011, pp.334-341. MIT Press 2011

Tim Hoverd, Susan Stepney.
Energy as a driver of diversity in open-ended evolution.
ECAL 2011, Paris, France, August 2011, pp.356-363. MIT Press 2011

Viv Kendon, Angelika Sebald, Susan Stepney, Matthias Bechmann, Peter Hines, Robert C. Wagner
Heterotic Computing.
Unconventional Computation 2011, Turku, Finland, June 2011. LNCS 6714:113-124, Springer, 2011

Michael A. Lones, Andy M. Tyrrell, Susan Stepney, Leo S. Caves
Controlling legged robots with coupled Artificial Biochemical Networks.
ECAL 2011, Paris, France, August 2011, pp.465-472. MIT Press 2011

Adam Nellis, Susan Stepney.
Embodied copying for richer evolution.
ECAL 2011, Paris, France, August 2011, pp.597-604. MIT Press 2011

Susan Stepney, Tim Hoverd.
Reflecting on Open-Ended Evolution.
ECAL 2011, Paris, France, August 2011, pp.781-788. MIT Press 2011

other

Jon Timmis, Paul S. Andrews, Susan Stepney.
Editorial for special issue on the interaction between computation and biology
Natural Computing 10(1):187-8, 2011

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2010

book chapters

Nick Owens, Susan Stepney.
The Game of Life Rules on Penrose Tilings: still life and oscillators.
in Andy Adamatzky, ed, Game of Life Cellular Automata, chapter 18, pp331-378, Springer, 2010

journal papers

Nick Owens, Susan Stepney.
Investigations of the Game of Life cellular automata rules on Penrose Tilings: lifetime, ash and oscillator statistics.
Journal of Cellular Automata 5(3):207-225, 2010

Edward J. Powley, Susan Stepney.
Counting preimages of homogeneous configurations in 1-dimensional cellular automata.
Journal of Cellular Automata, 5(4-5):353-381, 2010

Marta Roselló-Merino, Matthias Bechmann, Angelika Sebald, Susan Stepney.
Classical Computing in Nuclear Magnetic Resonance.
Int. J. Unconventional Computing 6(3-4):163-195, 2010

refereed workshop and conference papers

Matthias Bechmann, Angelika Sebald, Susan Stepney.
From binary to continuous gates -- and back again
ICES 2010, York, UK, September 2010. LNCS 6274:335-347, Springer 2010

Adam Faulconbridge, Susan Stepney, Julian Miller, Leo Caves
RBN-World: The hunt for a rich AChem.
ALife XII, Odense, Denmark, August 2010. pp261-268, MIT Press 2010

Simon Hickinbotham, Edward Clark, Susan Stepney, Tim Clarke, Adam Nellis, Mungo Pay, Peter Young.
Diversity from a monoculture: effects of mutation-on-copy in a string-based artificial chemistry.
ALife XII, Odense, Denmark, August 2010. pp.24-31, MIT Press 2010

Tim Hoverd, Susan Stepney.
Formalising Harmony Seeking Rules of Morphogenesis.
ALife XII, Odense, Denmark, August 2010. pp.386-393, MIT Press 2010

Michael Lones, Andy Tyrrell, Susan Stepney, Leo Caves.
Controlling Complex Dynamics with Artificial Biochemical Networks.
EuroGP 2010, Istanbul, Turkey, April 2010, LNCS 6021:159-170, Springer 2010

Adam Nellis, Susan Stepney.
Automatically moving between levels in Artificial Chemistries.
ALife XII, Odense, Denmark, August 2010. pp269-276, MIT Press 2010

Jennifer Owen, Susan Stepney, Jon Timmis, Alan Winfield
Exploiting Loose Horizontal Coupling in Evolutionary Swarm Robotics.
ANTS 2010, Brussels, Belgium, September 2010, LNCS 6234:432-439, Springer 2010

other

Simon Hickinbotham, Edward Clark, Susan Stepney, Tim Clarke, Adam Nellis, Mungo Pay, Peter Young
Specification of the stringmol chemical programming language version 0.1,
Technical report YCS-2010-457, University of York, 2010

Susan Stepney
Visualising the dynamics of Random Boolean Networks: examples of network size, mutation, canalisation,
Technical report YCS-2010-448, University of York, February 2010

Susan Stepney
Report on 8th International Conference on Unconventional Computation 2009.
EATCS Bulletin, 100:173-175, 2010

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2009

journal papers

Edward J. Powley, Susan Stepney.
Automorphisms of transition graphs for linear cellular automata.
Journal of Cellular Automata 4(4):293-310, 2009

Edward J. Powley, Susan Stepney.
Automorphisms of transition graphs for elementary cellular automata.
Journal of Cellular Automata 4(2):125-136, 2009

Susan Stepney.
Non-Classical Hypercomputation.
Int. J. Unconventional Computing 5(3-4):267-276, 2009

Juan E. Tapiador, J. C. Hernandez-Castro, John A. Clark, Susan Stepney.
Highly entangled multi-qubit states with simple algebraic structure.
J. Phys. A 42:415301, 2009

refereed workshop and conference papers

Darren Beaumont, Susan Stepney.
Grammatical Evolution of L-Systems.
CEC 2009, Trondheim, Norway, May 2009, pp.2446-2453. IEEE Press, 2009

Gemma Danks, Susan Stepney, Leo Caves.
Co-translational protein folding with L-Systems.
ECAL 2009, Budapest, Hungary, September 2009. LNCS 5777:289-296. Springer, 2011

Adam Faulconbridge, Susan Stepney, Julian Miller, Leo Caves
RBNWorld: Sub-symbolic Artificial Chemistry.
ECAL 2009, Budapest, Hungary, September 2009. LNCS 5777:377-384. Springer, 2011

Simon Hickinbotham, Ed Clark, Susan Stepney, Tim Clarke, Adam Nellis, Mungo Pay, Peter Young
Molecular microprograms.
ECAL 2009, Budapest, Hungary, September 2009. LNCS 5777:297-304. Springer, 2011

Simon Hickinbotham, Ed Clark, Susan Stepney, Tim Clarke, Peter Young
Gene Regulation in a Particle Metabolome.
CEC 2009, Trondheim, Norway, May 2009, pp.3024-3031. IEEE Press, 2009

Andrew J. Payne, Susan Stepney.
Representation and Structural biases in CGP.
CEC 2009, Trondheim, Norway, May 2009, pp.1064-1071. IEEE Press, 2009

Susan Stepney.
Visualising Random Boolean Network Dynamics: effects of perturbations and canalisation.
ECAL 2009, Budapest, Hungary, September 2009. LNCS 5777:369-376. Springer, 2011

Susan Stepney.
Visualising Random Boolean Network Dynamics.
GECCO 2009, Montreal, Canada, July 2009. pp1781-82. ACM Press

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journal papers

Susan Stepney.
The Neglected Pillar of Material Computation.
Physica D 237(9):1157-1164, July 2008

Susan Stepney, John A. Clark.
Searching for Quantum Programs and Quantum Protocols: a review.
Journal of Computational and Theoretical Nanoscience 5(5):942-969, May 2008

refereed workshop and conference papers

Kester Clegg, Susan Stepney.
Analogue Circuit Control through Gene Expression.
EvoHot, EuroGP, Naples, Italy, March 2008. LNCS 4974:154-163, Springer, 2008

Gemma Danks, Susan Stepney, Leo Caves.
Protein folding with stochastic L-Systems.
ALife XI, Winchester, UK, August 2008, pp150-157. MIT Press, 2008

Nick Owens, Susan Stepney.
Investigations of the Game of Life cellular automata rules on Penrose Tilings: lifetime and ash statistics.
Automata 2008, Bristol, UK, June 2008, pp 1-34. Luniver Press, 2008

Edward J. Powley, Susan Stepney.
Automorphisms of transition graphs for a linear cellular automaton.
Automata 2008, Bristol, UK, June 2008, pp 55-68. Luniver Press, 2008

Susan Stepney, Samson Abramsky, Andy Adamatzky, Colin Johnson, Jon Timmis.
Grand Challenge 7: Journeys in Non-Classical Computation.
Visions of Computer Science, London, UK, September 2008, pp407-421. BCS 2008

Andrew Weeks, Fiona Polack, Susan Stepney.
Investigating emergence by coarse graining Elementary Cellular Automata.
ALife XI, Winchester, UK, August 2008, pp686-693. MIT Press, 2008

other

Jon Timmis, Emma Hart, Andy Hone, Mark Neal, Adrian Robins, Susan Stepney, Andy Tyrrell.
Immuno-Engineering.
2nd IFIP International Conference on Biologically Inspired Collaborative Computing, 20th IFIPWorld Computer Congress, Milan, Italy, September 2008. IEEE Press 2008.

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2007

books / proceedings

A. Adamatzky, L. Bull, B. De Lacy Costello, Susan Stepney, C. Teuscher, editors.
Unconventional Computing 2007, Bristol, UK, July 2007.
Luniver Press, 2007.

book chapters

Susan Stepney.
Embodiment.
In Darren Flower, Jonathan Timmis, eds. In Silico Immunology, chapter 12, Springer, 2007.

journal papers

Heather Turner, Susan Stepney, Fiona Polack.
Rule Migration: Exploring a design framework for emergence.
Int. J. Unconventional Computing. 3(1):49-66, 2007

refereed workshop and conference papers

Matthias Bechmann, John A. Clark, Angelika Sebald, Susan Stepney.
Unentangling nuclear magnetic resonance computing.
Unconventional Computing 2007, Bristol, UK, July 2007, pp1-18. Luniver Press, 2007

Kester Clegg, Susan Stepney, Tim Clarke.
Evolutionary search applied to reconfigurable analogue control.
FPL 2007, Amsterdam, Netherlands, August 2007. IEEE, 2007

Kester Clegg, Susan Stepney, Tim Clarke.
Using Feedback to Regulate Gene Expression in a Developmental Control Architecture.
GECCO'07, London, UK, July 2007. pp966-973. ACM Press, 2007

Gemma Danks, Susan Stepney, Leo Caves.
Folding Protein-Like Structures with Open L-systems.
ECAL 2007, Lisbon, Portugal, September 2007. LNAI 4648:1100-1109, Springer, 2007

Susan Stepney, Tim Clarke, Peter Young.
PLAZZMID: an agent-based architecture inspired by bee and bacterial genomes.
ECAL 2007, Lisbon, Portugal, September 2007. LNAI 4648:1151-1160, Springer, 2007

Andrew Weeks, Susan Stepney, Fiona Polack.
Neutral Emergence and Coarse Graining.
ECAL 2007, Lisbon, Portugal, September 2007. LNAI 4648:1131-1140, Springer, 2007

other

Andrew Weeks, Susan Stepney, Fiona Polack.
Neutral Emergence: a proposal.
Symposium on Complex Systems Engineering, RAND Corporation, Santa Monica, CA, USA, 11-12 January 2007

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2006

books / proceedings

Cristian S. Calude, Michael J. Dinneen, Gheorghe Paun, Grzegorz Rozenberg, Susan Stepney, editors.
Unconventional Computation, UC 2006, York, UK, September 2006.
LNCS 4135. Springer, 2006.

book chapters

Susan Stepney, John A. Clark.
Evolving Quantum Programs and Protocols.
In Michael Rieth, Wolfram Schommers, eds. Handbook of Theoretical and Computational Nanotechnology, volume 3, chapter 3, pp 113-160, American Scientific Publishers, 2006

journal papers

Paul Massey, John A. Clark, Susan Stepney.
Human-Competitive Evolution of Quantum Computing Artefacts by Genetic Programming.
Evolutionary Computation Journal. 14(1):21-40, 2006

Susan Stepney, Samuel L. Braunstein, John A. Clark, Andy Tyrrell, Andrew Adamatzky, Robert E. Smith, Tom Addis, Colin Johnson, Jonathan Timmis, Peter Welch, Robin Milner, Derek Partridge.
Journeys in Non-Classical Computation II: Initial journeys and waypoints.
Int. J. Parallel, Emergent and Distributed Systems. 21(2):97-125, April 2006

refereed workshop and conference papers

John A. Clark, Susan Stepney.
Fusing Natural Computational Paradigms for Cryptanalysis.
CEC-2006, Vancouver, Canada, July 2006, pp 200-206, IEEE, 2006

Susan Stepney, Fiona Polack, Heather Turner.
Engineering Emergence.
ICECCS'06, Stanford, CA, USA, August 2006, pp 89-97, IEEE, 2006

other

Kester Clegg, Susan Stepney.
Binding Analogue Feedback to Digital Genomes: Bio-inspired Regulatory Control for Analogue Devices (abstract).
ECSIS Symposium on Intelligent Systems for Defense and Security (ISDS), Iasi, Romania, 20-21 September 2006

Susan Stepney.
Hypercomputation and the Grand Challenge in Non-Classical Computation.
International Interdisciplinary Workshop on Future Trends in Hypercomputation, Sheffield, UK, 11-13 September 2006

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2005

journal papers

Iain Brown, Susan Stepney, Anthony Sudbery, Samuel L. Braunstein.
Searching for highly entangled multi-qubit states.
J. Phys. A, 38:1119-1131, 2005

John A. Clark, Jeremy L. Jacob, Susan Stepney.
The design of S-boxes by simulated annealing.
New Generation Computing, 23(3):219-231, May 2005

Susan Stepney, Samuel L. Braunstein, John A. Clark, Andy Tyrrell, Andrew Adamatzky, Robert E. Smith, Tom Addis, Colin Johnson, Jonathan Timmis, Peter Welch, Robin Milner, Derek Partridge.
Journeys in Non-Classical Computation I: A Grand Challenge for computing research.
Int. J. Parallel, Emergent and Distributed Systems 20(1):5-19, March 2005

Susan Stepney, Robert E. Smith, Jonathan Timmis, Andy M. Tyrrell, Mark J. Neal, Andrew N. W. Hone.
Conceptual Frameworks for Artificial Immune Systems.
Int. J. Unconventional Computing. 1(3):315-338, July 2005

refereed workshop and conference papers

Margaret Hill, Susan Stepney, Francis Wan.
Penrose Life: ash and oscillators.
ECAL 2005, Canterbury, UK, September 2005. LNAI 3630:471-480, Springer, 2005

Paul Massey, John A. Clark, Susan Stepney.
Evolution of a Human-Competitive Quantum Fourier Transform algorithm using genetic programming.
GECCO'05, Washington DC, June 2005, pp 1657-1664, ACM Press, 2005

John Newborough, Susan Stepney.
A generic framework for population-based algorithms, implemented on multiple FPGAs.
ICARIS 2005, Banff, Canada, August 2005. LNCS 3627:43-55, Springer, 2005

Fiona Polack, Susan Stepney.
Emergent Properties do not Refine.
REFINE 2005, Surrey, UK, April 2005. ENTCS 137(2):163-181, 2005

Fiona Polack, Susan Stepney, Heather Turner, Peter Welch, Fred Barnes.
An architecture for modelling emergence in CA-like systems.
ECAL 2005, Canterbury, UK, September 2005. LNAI 3630:433-442, Springer, 2005

Heather Turner, Susan Stepney.
Rule Migration: Exploring a design framework for modelling emergence in CA-like systems.
ECAL Workshop on Unconventional Computing, 2005

Andrew Weeks, Susan Stepney.
Artificial catalysed reaction networks for search.
ECAL Workshop on Artificial Chemistry, 2005

Peter Worth, Susan Stepney.
Growing Music: musical interpretations of L-Systems.
EvoMUSART, EuroGP, Lausanne, Switzerland, March 2005. LNCS 3449:545-550, Springer, 2005

other

Heather Turner, Susan Stepney, Fiona Polack.
A simulation environment for emergent properties (extended abstract).
ECCS'05, Paris, France, November 2005

Susan Stepney.
Desert Island Column.
Automated Software Engineering 12(1):139-141, 2005

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2004

refereed workshop and conference papers

Richard Banach, Czeslaw Jeske, Simon Fraser, Richard Cross, Mike Poppleton, Susan Stepney, Steve King.
Approaching the Formal Design and Development of Complex Systems: the Retrenchment Position.
Workshop on Software and Complex Systems, 9th IEEE Intl. Conf. on Engineering of Complex Computer Systems, Florence, Italy, April 2004

Leo Caves, John A. Clark, Susan Stepney.
Acquiring a Debt Worth Repaying.
BioGEC workshop, GECCO'04, Seattle, June 2004

John A. Clark, Jeremy L. Jacob, Susan Stepney.
Searching for cost functions.
CEC-2004, Portland OR, USA, June 2004, pp 1517-1524. IEEE, 2004

John A. Clark, Jeremy L. Jacob, Susan Stepney.
The design of S-boxes by simulated annealing.
CEC-2004, Portland OR, USA, June 2004, pp 1533-1537. IEEE, 2004

Paul Massey, John A. Clark, Susan Stepney.
Evolving quantum circuits and programs through genetic programming.
GECCO'04, Seattle, June 2004. LNCS 3103:569-580, Springer, 2004

Susan Stepney, Robert E. Smith, Jonathan Timmis, Andy M. Tyrrell.
Towards a Conceptual Framework for Artificial Immune Systems.
ICARIS 2004, Sicily, September 2004. LNCS 3239:53-64, Springer, 2004

Susan Stepney.
Teaching Post-Classical Computation.
ITiCSE, Leeds, UK, June 2004. ACM Press, 2004

other

Susan Stepney.
Book Review: Evolutionary Electronics: Automatic Design of Electronic Circuits and Systems by Genetic Algorithms.
Genetic Programming and Evolvable Machines 5(4):395-396, 2004

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2003

refereed workshop and conference papers

John A. Clark, Jeremy L. Jacob, Susan Stepney.
Secret Agents Leave Big Footprints.
GECCO'03, Chicago, July 2003. LNCS 2724:2022-2033, Springer, 2003

Matthew D. Russell, John A. Clark, Susan Stepney.
Making the Most of Two Heuristics: Breaking Transposition Ciphers with Ants.
CEC-2003, Canberra, Australia, December 2003, pp 2653-2658, IEEE, 2003

Matthew Russell, John A. Clark, Susan Stepney.
Using Ants to Attack a Classical Cipher. (poster paper)
GECCO'03, Chicago, July 2003. LNCS 2723:146-147, Springer, 2003

Susan Stepney.
Critical Critical Systems.
FASeC'02, London, December 2002. LNCS 2629:62-70, Springer, 2003

Susan Stepney, John A. Clark, Colin Johnson, Derek Partridge, Robert E. Smith.
Artificial Immune Systems and the Grand Challenge for Non-Classical Computation.
ICARIS 2003, Edinburgh, September 2003. LNCS 2787:204-216, Springer, 2003

other

Robin Milner, Susan Stepney.
Nanotechnology: Computer Science opportunities and challenges.
Submission by the UK Computing Research Committee to the Nanotechnology Working Group of the Royal Society and the Royal Academy of Engineering. August, 2003