References and Software References from lecture Bak, P., Tang, C. and Wiesenfeld, K. (1987) Self-organized criticality: an explanation of 1 / f noise. Physical Review Letters 59, 381–384. [online] http://dx.doi.org/10.1103%2FPhysRevLett.59.381 Batty, M. (2006) Rank Clocks. Nature 444, 592-596. Brakman, S., Garretsen, J.H., Marrewijk, J.G.M. van, and Berg, M. van den (1999) The return of Zipf: towards a further understanding of the rank-size distribution. Journal of Regional Science 183-213. Heppenstall, A.J., Evans, A.J. and Birkin, M.H., (2007) Genetic Algorithm Optimisation of a Multi-Agent System for Simulating a Retail Market. Environment and Planning B. v.34. Heppenstall, A.J., Evans, A.J. and Birkin, M.H., (2006) Application of Multi-Agent Systems to Modelling a Dynamic, Locally Interacting Retail Market. JASSS. vol 9(3). Heppenstall, A.J., Evans, A.J. and Birkin, M.H. (2005), A Hybrid Multi-Agent/Spatial Interaction Model System for Petrol Price Setting. Transactions in GIS 9(1): 35 - 51. Heppenstall, A.J. and Ross, A.N. (2007) An Application of Agent-Based Modelling for Investigating the Emergence of Structure and Dynamic Processes within a Complex Retail Market. European Academy of Management Paris, May 16 - 19. http://www.euram2007.org/ Heppenstall, A.J., McFarland, O.E. and Evans, A.E. (2005), The Application of MultiAgent Systems and Social Network Theory to Petrol Pricing on UK Motorways. Lecture Notes in Artificial Intelligence 3690, pp. 551–554. Nair, A.S., Jyh-Charn Liu, Rilett, L., and Gupta, S. (2001) Non-linear analysis of traffic flow. Intelligent Transportation Systems, 2001. Proceedings. 2001 IEEE. 681685 [online] http://rtds.cs.tamu.edu/publications/conferences/CHAOS1.PDF Scheffer, M., Bascompte, J., Brock, W.A., Brovkin, V., Carpenter, S.R., Dakos, V., Held, H., van Nes, E.H., Rietkerk, M. and Sugihara, G. (2009) Early-warning signals for critical transitions. Nature 461, 53-59 [online] http://www.nature.com/nature/journal/v461/n7260/full/nature08227.html Shiner, J.S., Davison, Matt and Landsberg, P.T. (1999) On a simple measure for complexity. Physical Review E, 59, (2), 1459-1464 [online] http://dx.doi.org/doi:10.1103/PhysRevE.59.1459 Weaver, W. (1948) Science and Complexity. American Scientist. 36, 536-544. [online] http://www.ceptualinstitute.com/genre/weaver/weaver-1947b.htm Wilson, A.G. (1981) Catastrophe Theory and Bifurcation: Applications to Urban and Regional Systems. Crook Helm Press. 0709927029 Zipf, G.K. (1949) Human Behavior and the Principle of Least Effort. Cambridge MA : Addison-Wesley. Materials used The graph for 2009 populations is from Carnegie Mellon University PhD student Brendan O’Connor’s blog: http://anyall.org/blog/2009/05/zipfs-law-and-world-city-populations/ and is derived from populationdata.net figures: http://www.populationdata.net/index2.php?option=palmares&rid=4&nom=grandesvilles The logistic map figures are from the blog of Dan Olner, PhD student at Leeds: http://www.coveredinbees.org/processing/exploringchaos/index.html Further reading A good starting point on complexity statistics is Bruce Edmunds’ Complexity Bibliography: http://bruce.edmonds.name/combib/ A good starting point on Kolmogorov complexity is Marcus Hutter’s site: http://www.hutter1.net/ait.htm If you are interested in the arguments around these issues, a good starting point is the lectures by Seth Bullock and others from the Southampton Spring School in Complexity Science, 2006: http://videolectures.net/sscs06_southampton/ For a paper on analysis of a model of traffic flow, see: Saavedra, P. and Velasco, R. M. (2009) Phase-space analysis for hydrodynamic traffic models Physical Review E, 79, 066103 [online] http://pre.aps.org/pdf/PRE/v79/i6/e066103 Good texts The classic lay introduction to chaos is: Gleick, J. (1987) Chaos: Making a New Science. http://www.around.com/chaos.html Classical engineering treatment of chaos: Tel, T. and Gruiz, M. Chaotic Dynamics. Cambridge University Press. Programmers who want to build their own analysis software might want: Steeb, W-H. (2002) The Nonlinear Workbook. World Scientific Although we haven’t covered fractals here, they are an essential part of chaoscentred literature. If you want a good introductory text, then you could do worse than: Hastings, H.M. and Sugihara, G. (1993) Fractals: A User’s Guide for the Natural Sciences. Oxford Science Publications. Software Most developments in chaotic systems concentrate on purely mathematical systems – they’re just very much easier to understand and deal with. So, most software does the same. The following two sites include a wide variety of software, the latter site including a lot of pure-maths treatments, however, there are some useful bits and pieces, especially on the recurrence plots site. Recurrence plots and other complexity measures: http://www.recurrence-plot.tk/programmes.php Complex Systems: http://www.calresco.org/sos/software.htm