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Predictor Identifier: Nonparametric PREDiction (NPRED) Partial informational correlation (PIC) is used to identify the meaningful predictors to the response from a large set of potential predictors.
The initial version of NPRED is at Hydrology@UNSW. This is a new version of NPRED without calling Fortran codes.
Applications of this package can be found in: * Jiang, Z., Sharma, A., & Johnson, F. (2021). Variable transformations in the spectral domain – Implications for hydrologic forecasting. Journal of Hydrology, 126816. doi * Jiang, Z., Rashid, M. M., Johnson, F., & Sharma, A. (2020). A wavelet-based tool to modulate variance in predictors: an application to predicting drought anomalies. Environmental Modelling & Software, 135, 104907. doi * Jiang, Z., Sharma, A., & Johnson, F. (2020). Refining Predictor Spectral Representation Using Wavelet Theory for Improved Natural System Modeling. Water Resources Research, 56(3), e2019WR026962. doi
You can install the package via devtools from GitHub with:
devtools::install_github("zejiang-unsw/NPRED")or via CRAN with:
install.packages("NPRED")Sharma, A., Mehrotra, R. (2014). An information theoretic alternative to model a natural system using observational information alone. Water Resources Research, 50(1): 650-660.
Galelli S., Humphrey G.B., Maier H.R., Castelletti A., Dandy G.C. and Gibbs M.S. (2014). An evaluation framework for input variable selection algorithms for environmental data-driven models, Environmental Modelling and Software, 62, 33-51.
Sharma, A., Mehrotra, R., Li, J., & Jha, S. (2016). A programming tool for nonparametric system prediction using Partial Informational Correlation and Partial Weights. Environmental Modelling & Software, 83, 271-275.
Mehrotra, R., & Sharma, A. (2006). Conditional resampling of hydrologic time series using multiple predictor variables: A K-nearest neighbour approach. Advances in Water Resources, 29(7), 987-999.
These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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