\There is nothing wrong with a good illusion as long as one does not claim it is reality." Howard Pattee ((Pattee 88] p.74) In the previous two chapters, the behaviour of Cosmos has been analysed in considerable detail. However, as suggested in Section 6.8, it is still unclear exactly what the scientiic value of these results is, in terms of what they can tell us about biological evolution, or ...

Stefan Antusch, Mar Bastero-Gil, Steve F. King, and Qaisar Shafi School of Physics and Astonomy, University of Southampton, Southampton, SO17 1BJ, United Kingdom Departamento de Fisica Teorica y del Cosmos and Centro Andaluz de Fisica de Particulas Elementales (CAFPE), Universidad de Granada, E-19071 Granada, Spain Bartol Research Institute, University of Delaware, Newark, Delaware 19716, USA (...

We examine the problem of learning and planning on highdimensional domains with long horizons and sparse rewards. Recent approaches have shown great successes in many Atari 2600 domains. However, domains with long horizons and sparse rewards, such as Montezuma’s Revenge and Venture, remain challenging for existing methods. Methods using abstraction (Dietterich 2000; Sutton, Precup, and Singh 19...

T. Primera, A. Bazavovb∗, C. Bernardc, C. DeTard , D. Due, A.X. El-Khadra f , E.D. Freelandg, E. Gámizh, Steven Gottlieb†b, U.M. Helleri, J. Komijani j, A.S. Kronfeld j,k, J. Laihoe, P.B. Mackenziek, E.T. Neill,m, J.N. Simonek, R.L. Sugarn, D. Toussainta, R.S. Van de Waterk, and R. Zhouk a Physics Department, University of Arizona, Tucson, AZ 85721, USA b Department of Physics, Indiana Universi...

We discuss the high energy behaviour of total cross-sections for protons and photons, in a QCD based framework with particular emphasis on the role played by soft gluons. 1 Talk given by G.P. at QCD@work, International Workshop on QCD, Martina Franca, Italy, June 1620,2001 Soft Gluons and the Energy Dependence of Total Cross-Sections R. M. Godbole∗, A. Grau, G. Pancheri∗∗ and Y. N. Srivastava ∗...

Opinions expressed herein do not necessarily concur with the Federal Reserve Board or any other employees of the Federal R.eserve System. The authors are also grateful co Stephen Brown for providing some of the international stock market data. Some of the UK stock market data used in the analysis herein were extracted from the London Share Price Database, which is a copyright work of the L,ondo...

Ultra-relativistic heavy ion collisions produce a high-temperature, thermalized system that may mimic the conditions present shortly after the big bang. This writeup will given an overview of early results from the Relativistic Heavy Ion Collider (RHIC), and discuss what we have learned about hot, strongly interacting nuclear systems. The thermal and chemical composition of the system will be d...

A partial review of Thomas Nagel’s book, Mind and Cosmos: Why the Materialist Neo-Darwinian Conception of Nature Is Almost Certainly False is used to articulate some systems-theoretic ideas about the challenge of understanding subjective experience. The article accepts Nagel’s view that reductionist materialism fails as an approach to this challenge, but argues that seeking an explanation of mi...

L. Tolós,1,* R. Molina,2 E. Oset,2 and A. Ramos3 1Theory Group KVI, University of Groningen, Zernikelaan 25, NL-9747 AA Groningen, The Netherlands 2Instituto de Fı́sica Corpuscular (Centro Mixto CSIC-UV), Institutos de Investigación de Paterna, Apartado 22085, ES-46071 Valencia, Spain 3Departament d’Estructura i Constituents de la Matèria i Institut de Ciències del Cosmos. Facultat de Fı́sica. Un...

Frequent sub-graph mining entails two significant overheads. The first is concerned with candidate set generation. The second with isomorphism checking. These are also issues with respect to other forms of frequent pattern mining but are exacerbated in the context of frequent sub-graph mining. To reduced the search space, and address these twin overheads, a weighted approach to sub-graph mining...