Preface to the first edition Preface to the second edition Acknowledgements Ⅰ Basictopics 1 Introduction: why nonlinear methods? 2 Linear tools and general considerations 2.1 Stationarity and sampling 2.2 Testing for stationarity 2.3 Linear correlations and the power spectrum 2.3.1 Stationarity and the low—frequency component in the power spectrum 2.4 Linear filters 2.5 Linearpredictions 3 Phase space methods 3.1 Determinism: uniqueness in phase space 3.2 Delayreconstruction 3.3 Finding a good embedding 3.3.1 False neighbours 3.3.2 The time lag 3.4 Visual inspection of data 3.5 Poincare surface of section 3.6 Recurrenceplots 4 Determinism and predictability 4.1 Sources of predictability 4.2 Simple nonlinear prediction algorithm 4.3 Verification ofsuccessful prediction 4.4 Cross—prediction errors: probing stationarity 4.5 Simple nonlinear noise reduction 5 Instability: Lyapunov exponents 5.1 Sensitive dependence on initial conditions 5.2 Exponentialdivergence 5.3 Measuring the maximalexponent from data 6 Self—similarity:dimensions 6.1 Attractor geometry and fractals 6.2 Correlationdimension 6.3 Correlation sum from a time series 6.4 Interpretation and pitfalls 6.5 Temporalcorrelations, non—stationarity, and space time separation plots 6.6 Practicalconsiderations 6.7 A useful application: determination of the noise level using the correlation integral 6.8 Multi—scale or self—similar signals 6.8.1 Scalinglaws 6.8.2 Detrended fluctuation analysis 7 Using nonlinear methods when determinismis weak 7.1 Testing for nonlinearity with surrogate data 7.1.1 The null hypothesis 7.1.2 How to make surrogate data sets 7.1.3 Which statistics to use 7.1.4 What can go wrong 7.1.5 What we havelearned 7.2 Nonlinear statistics for system discrimination 7.3 Extracting qualitative information from a time series 8 Selected nonlinear phenomena 8.1 Robustness and limit cycles 8.2 Coexistence of attractors 8.3 Transients 8.4 Intermittency 8.5 Structural stabilitY 8.6 Bifurcations 8.7 Quasi—periodicity
Ⅱ Advancedtopics 9 Advanced embedding methods 9.1 Embedding theorems 9.1.1 Whitney’’s embedding theorem 9.1.2 Takens’’s delay embedding theorem 9.2 The time lag 9.3 Filtered delay embeddings 9.3.1 Derivative coordinates 9.3.2 Principal component analysis 9.4 Fluctuating time intervals 9.5 Multichannel measurements 9.5.1 Equivalent variables at different positions 9.5.2 Variables with different physical meanings 9.5.3 Distributed systems 9.6 Embedding of interspike intervals 9.7 High dimensional chaos and the limitations of the time delay embedding 9.8 Embedding for systems with time delayed feedback 10 Chaotic data and noise 10.1 Measurement noise and dynamical noise 10.2 Effects of noise 10.3 Nonlinear noise reduction 10.3.1 Noise reduction by gradient descent 10.3.2 Local projective noise reduction 10.3.3 Implementation oflocally projective noise reduction 10.3.4 How much noise.is taken out? 10.3.5 Consistencytests 10.4 An application: foetal ECG extraction 11 More aboutinvariant quantities 11.1 Ergodicity and strange attractors 11.2 Lyapunov exponents Ⅱ 11.2.1 The spectrum of Lyapunov exponents and invariant manifolds 11.2.2 Flows versus maps 11.2.3 Tangent space method 11.2.4 Spuriousexponents 11.2.5 Almost two dimensional flows 11.3 Dimensions Ⅱ 11.3.1 Generalised dimensions, multi—fractals 11.3.2 Information dimension from a time series 11.4 Entropies 11.4.1 Chaos and the flow ofinformation 11.4.2 Entropies of a static distribution 11.4.3 The Kolmogorov—Sinai entropy 11.4.4 The e—entropy per unit time 11.4.5 Entropies from time series data 11.5 How things are related 11.5.1 Pesin’’sidentity 11.5.2 Kaplan—Yorkeconjecture 12 Modelling and forecasting 12.1 Linear stochastic models and filters 12.1.1 Linear filters 12.1.2 Nonlinear filters 12.2 Deterministicdynamics 12.3 Local methods in phase space 12.3.1 Almost model free methods 12.3.2 Local linear fits 12.4 Global nonlinear models 12.4.1 Polynomials 12.4.2 Radial basis functions 12.4.3 Neuralnetworks 12.4.4 What to do in practice 12.5 Improved cost functions 12.5.1 Overfitting and modelcosts 12.5.2 The errors—in—variables problem 12.5.3 Modelling versus prediction 12.6 Model verification 12.7 Nonlinear stochastic processes from data 12.7.1 Fokker—Planck equations from data 12.7.2 Markov chains in embedding space 12.7.3 No embedding theorem for Markov chains 12.7.4 Predictions for Markov chain data 12.7.5 Modelling Markov chain data 12.7.6 Choosing embedding parameters for Markov chains 12.7.7 Application: prediction of surface wind velocities 12.8 Predicting prediction errors 12.8.1 Predictabilitymap 12.8.2 Individual error prediction 12.9 Multi—step predictions versus iterated one—step predictions 13 Non—stationary signals 13.1 Detecting non—stationarity 13.1.1 Making non—stationary data stationary 13.2 Over—embedding 13.2.1 Deterministic systems with parameter drift 13.2.2 Markov chain with parameter drift 13.2.3 Data analysis in over—embedding spaces 13.2.4 Application: noise reduction for human voice 13.3 Parameter spaces from data 14 Coupling and synchronisation of nonlinear systems 14.1 Measures for interdependence 14.2 Transfer entropy 14.3 Synchronisation 15 Chaos control 15.1 Unstable periodic orbits and their invariant manifolds 15.1.1 Locating periodic orbits 15.1.2 Stable/unstable manifolds from data 15.2 OGY—control and derivates 15.3 Variants of OGY—control 15.4 Delayed feedback 15.5 Tracking 15.6 Relatedaspects
A Using the TISEAN programs A.1 Information relevant to most of the routines A.1.1 Efficient neighbour searching A.1.2 Re—occurring command options A.2 Second—order statistics and linear models A.3 Phase space tools A.4 Prediction and modelling A.4.1 Locally constant predictor A.4.2 Locally linear prediction A.4.3 Global nonlinear models A.5 Lyapunov exponents A.6 Dimensions and entropies A.6.1 The correlation sum A.6.2 Information dimension, fixed mass algorithm A.6.3 Entropies A.7 Surrogate data and test statistics A.8 Noise reduction A.9 Finding unstable periodic orbits A.10 Multivariate data
B Description of the experimental data sets B.1 Lorenz—like chaos in an NH3 laser B.2 Chaos in a periodically modulated NMR laser B.3 Vibrating string B.4 Taylor—Couette flow B.5 Multichannel physiological data B.6 Heart rate during atrial fibrillation B.7 Human electrocardiogram (ECG) B.8 Phonation data B.9 Postural control data B.10 Autonomous CO2 laser with feedback B.11 Nonlinear electric resonance Circuit B.12 Frequency doubling solid state laser B.13 Surface wind velocities References Index