Preprints
Gravity driven shallow granular flows down flat frictional channels, Decembre 2011, Nicolas Brodu, Patrick Richard, Renaud Delannay. Showing the presence of rolls and a supported regime in granular flows in an a priori mundane setup, using DEM simulations. Submitted.
3D Terrestrial LiDAR data classification of complex natural scenes using a multi-scale dimensionality criterion: applications in geomorphology, Nov. 2011, Nicolas Brodu, Dimitri Lague. Recognition of the vegetation in 3D point clouds. See the dedicated page for information. Accepted with minor modifications, resubmitted.
Publications
International Journals
Exploring Two Novel Features for EEG-based Brain-Computer Interfaces: Multifractal Cumulants and Predictive Complexity, August 2010, Nicolas Brodu, Fabien Lotte, Anatole Lécuyer. To appear in the Neurocomputing journal. The source code associated with the paper is available here.
Reconstruction of Epsilon-Machines in Predictive Frameworks and Decisional States, January 2011, Nicolas Brodu. How to combine epsilon-machines with utility/loss functions, together with a new algorithm for estimating the system states' Markovian automaton. Please see the dedicated page for more information. To appear in Advances in Complex Systems.
A synthesis and a practical approach to complex systems, Jan 2008, Nicolas Brodu. This document is both a synthesis of current notions about complex systems, and a practical approach description. Complexity, 15(1), pp 36-60, 2008.
Query Sphere Indexing for Neighborhood Requests, June 2007, Nicolas Brodu. This is an algorithm for finding the neighbors of mobile objects, introducing a fast indexing scheme of the query sphere. The reference source code is available for an application to 3 dimensions. Journal of Graphics Tools, 13(3) pp 35-51, 2008.
International Conferences
Comparative Study of Band-Power Extraction Techniques for Motor Imagery Classification, August 2010, Nicolas Brodu, Fabien Lotte, Anatole Lécuyer. To appear in SSCI 2011 CCMB - 2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain. The source code for the experiments is available here.
Multifractal Feature Vectors for Brain-Computer Interfaces, June 2008, Nicolas Brodu. Proceedings of the 2008 IEEE World Congress on Computational Intelligence. EEG feature extraction using multifractal analysis, processing by more than 10 different classifiers, and combination with existing features. The source code corresponding to the experiments is available, and it is maintained in this SVN.
Minimal and necessary conditions for the emergence of species-specific recognition patterns, Octobre 2007, Nicolas Brodu. Proceedings of the EA 2007 conference, Springer Lecture Notes in Computer Science (LNCS) 4926, pp 73-86. Agents are given various machine learning capabilities and use them to recognize each other. The successful ones may reproduce, and end up exhibiting unpredictable species specific recognition patterns. The source code of the experiments is available here.
Quantifying the effect of learning on recurrent spiking neurons, April 2007, Nicolas Brodu. IEEE International Joint Conference on Neural Networks (IJCNN) proceedings. The source code of the algorithm described in this article as well as the experiments are available. You'll find more details about the incremental statistical complexity analyzer here.
Learning using Dynamical Regime Identification and Synchronization, April 2006, Nicolas Brodu. IEEE World Congress on Computational Intelligence, WCCI06/IJCNN, MonMM-2-6, proceedings pp662-668. The source code related to this article is here for the archives, though you might be interested in this more recent version. The presentation slides shown at the WCCI06 are also available.
Environmental fitness for sustained population dynamics, September 2005, Nicolas Brodu. IEEE Congress on Evolutionary Computation (CEC), Vol 1, p 343. The source code is available here. See also more details on this page.
Collective work
French Roadmap for complex Systems 2008-2009, Chevalarias, Bourgine, Perrier, et al. This second issue of the French Complex Systems Roadmap is the outcome of the Entretiens de Cargese 2008, an interdisciplinary brainstorming session organized over one week in 2008, jointly by RNSC, ISC-PIF and IXXI. It capitalizes on the first roadmap and gathers contributions of more than 70 scientists from major French institutions.
PhD Thesis
Practical Investigations of Complex Systems, June 2007, Nicolas Brodu. This is my PhD dissertation, accepted as submitted, which I've been told is very rare. Please see the dedicated page for more information.
Invited speaker presentations
A brief overview of causal and decisional states and their applications, October 2009. Talk given at the Dagstuhl center for the Machine learning approaches to statistical dependences and causality seminar.
Frameworks for causation, November 2009. Talk given at the 4th workshop on Causality and Complex Systems.
JSynoptic, October 2006, Nicolas Brodu. Presentation given at the 3rd ESA Workshop on Astrodynamics tools and techniques. The demo files are available too.
Miscellaneous
Real-time update of multi-fractal analysis on dynamic time series using incremental discrete wavelet transforms, November 2005, Nicolas Brodu. This preprint was submitted for so long without either negative or positive answer ("it's being processed"), that I will probably cancel the submission, rework the article and resubmit it somewhere else. The source code related to this article is available.
Patterns of emergence, March 2005. An old and slightly incorrect presentation about dynamical systems, self-organization, and emergence. Kept here for the records by honnesty.
Crogai project report: Using AI with steering behaviors to model crowds, December 2004, Nicolas Brodu.
An overview of multiplayer gaming, October 2004, Nicolas Brodu.
Reduced dimension models for weather forecasting, September 2000, Nicolas Brodu. See also my MScR page for information and comments.
