Recurrence quantification analysis and principal components in the detection of short complex signals

Zbilut, Joseph P.; Giuliani, Alessandro; Webber, Charles L.

doi:10.1016/s0375-9601(97)00843-8

Cited by 141 publications

(93 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to obtain r for the different n values, a log-log plot is in order. The choice of τ is debatable [79]. In the following we have chosen τ = 500 like in other related studies [20], for n = 1 to 15.…”

Section: Grassberger-procacia Methodsmentioning

confidence: 99%

Equilibrium and dynamic methods when comparing an English text and its Esperanto translation

Ausloos¹

2008

Physica A: Statistical Mechanics and its Applications

View full text Add to dashboard Cite

A comparison of two english texts from Lewis Carroll, one (Alice in wonderland), also translated into esperanto, the other (Through a looking glass) are discussed in order to observe whether natural and artificial languages significantly differ from each other. One dimensional time series like signals are constructed using only word frequencies (FTS) or word lengths (LTS). The data is studied through (i) a Zipf method for sorting out correlations in the FTS and (ii) a Grassberger-Procaccia (GP) technique based method for finding correlations in LTS. Features are compared : different power laws are observed with characteristic exponents for the ranking properties, and the phase space attractor dimensionality. The Zipf exponent can take values much less than unity (ca. 0.50 or 0.30) depending on how a sentence is defined. This non-universality is conjectured to be a measure of the author style. Moreover the attractor dimension r is a simple function of the so called phase space dimension n, i.e., r = n λ , with λ = 0.79. Such an exponent should also conjecture to be a measure of the author creativity. However, even though there are quantitative differences between the original english text and its esperanto translation, the qualitative differences are very minutes, indicating in this case a translation relatively well respecting, along our analysis lines, the content of the author writing.

show abstract

Section: Grassberger-procacia Methodsmentioning

confidence: 99%

Equilibrium and dynamic methods when comparing an English text and its Esperanto translation

Ausloos¹

2008

Physica A: Statistical Mechanics and its Applications

View full text Add to dashboard Cite

show abstract

“…Hence, in a second step we will employ principal component analysis (PCA) to reduce the dimensionality of the CRQA measures, which has been suggested as a viable solution to reduce data complexity when using conceptually related and highly correlated CRQA measures [48,49]. Also, the questionnaire data collected consisted of multiple questions related to subjective aspects of social relations among team members and perceived team performance, and will be reduced to a more manageable set of variables via PCA as well.…”

Section: Data Analysis Strategymentioning

confidence: 99%

Physiological evidence of interpersonal dynamics in a cooperative production task

Mønster

Håkonsson

Eskildsen

et al. 2016

Physiology & Behavior

118

145

View full text Add to dashboard Cite

Recent research suggests that shared behavioral dynamics during interpersonal interaction are indicative of subjective and objective outcomes of the interaction, such as feelings of rapport and success of performance. The role of shared physiological dynamics to quantify interpersonal interaction, however, has received comparativley little attention. In the present study, we investigate the coordination dynamics of multiple psychophysiological measures and their utility in capturing emotional dynamics in teams. We use data from an experiment where teams of three people built origami boats together in an assembly-line manner while their heart rate, skin conductance, and facial muscle activity were recorded. Our results show that physiological synchrony of skin conductance measures and eletromyographic measures of the corrugator supercilii develops spontaneously among team members during this cooperative production task. Moreover, high team synchrony is found indicative of team cohesion, while low team synchrony is found indicative of a teams' decision to adopt a new behavior across multiple production sessions. We conclude that team-level measures of synchrony offer new and complementary information compared to measures of individual levels of physiological activity.

show abstract

“…They used a graphical nonlinear method (Zbilut et al 1998;Marwan et al 2002): a recurrence plot to determine specific nonlinear indices. This method looks for recurrent values in a time series.…”

Section: Initial Rat Experiments: Graphical Methodsmentioning

confidence: 99%

Complexity of cardiovascular regulation in small animals

Aubert

Vandeput

Beckers

et al. 2009

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

Oscillations of heart rate and blood pressure are related to the activity of the underlying control mechanism. They have been investigated mostly with linear methods in the time and frequency domains. Also, in recent years, many different nonlinear analysis methods have been applied for the evaluation of cardiovascular variability. This review presents the most commonly used nonlinear methods. Physiological understanding is obtained from various results from small animals.

show abstract

Recurrence quantification analysis and principal components in the detection of short complex signals

Cited by 141 publications

References 24 publications

Equilibrium and dynamic methods when comparing an English text and its Esperanto translation

Equilibrium and dynamic methods when comparing an English text and its Esperanto translation

Physiological evidence of interpersonal dynamics in a cooperative production task

Complexity of cardiovascular regulation in small animals

Contact Info

Product

Resources

About