40 citations · 58 across the 9 of their papers we have counts for
7 papers · 1 filter
Appropriateness of correlated first order auto-regressive processes for modeling daily temperature records
Radhakrishnan Nagarajan, R. B. Govindan
The present study investigates linear and volatile (nonlinear) correlations of first-order autoregressive process with uncorrelated AR (1) and long-range correlated CAR (1) Gaussia…
Correlation Statistics for cDNA Microarray Image Analysis
Radhakrishnan Nagarajan, Meenakshi Upreti
In this report, correlation of the pixels comprising a microarray spot is investigated. Subsequently, correlation statistics namely: Pearson correlation and Spearman rank correlati…
Local Analysis of Dissipative Dynamical Systems
Radhakrishnan Nagarajan
Linear transformation techniques such as singular value decomposition (SVD) have been used widely to gain insight into the qualitative dynamics of data generated by dynamical syste…
Reliable scaling exponent estimation of long-range correlated noise in the presence of random spikes
Radhakrishnan Nagarajan
Detrended fluctuation analysis (DFA) has been used widely to determine possible long-range correlations in data obtained from diverse settings. In a recent study [1], uncorrelated…
Effect of coarse-graining on detrended fluctuation analysis
Radhakrishnan Nagarajan
Several studies have investigated the scaling behavior in naturally occurring biological and physical processes using techniques such as detrended fluctuation analysis (DFA). Data…
Surrogate testing of linear feedback processes with non-Gaussian innovations
Radhakrishnan Nagarajan
Surrogate testing is used widely to determine the nature of the process generating the given empirical sample. In the present study, the usefulness of phase-randomized surrogates,…