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# CITATION file created with {cffr} R package
# See also: https://docs.ropensci.org/cffr/
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cff-version: 1.2.0
message: 'To cite package "fastlpr" in publications use:'
type: software
license: GPL-3.0-only
title: 'fastlpr: Fast Local Polynomial Regression and Kernel Density Estimation'
version: 1.0.1
identifiers:
- type: doi
  value: 10.32614/CRAN.package.fastlpr
abstract: Non-Uniform Fast Fourier Transform ('NUFFT')-accelerated local polynomial
  regression and kernel density estimation for large, scattered, or complex-valued
  datasets. Provides automatic bandwidth selection via Generalized Cross-Validation
  (GCV) for regression and Likelihood Cross-Validation (LCV) for density estimation.
  This is the 'R' port of the 'fastLPR' 'MATLAB'/'Python' toolbox, achieving O(N +
  M log M) computational complexity through custom 'NUFFT' implementation with Gaussian
  gridding. Supports 1D/2D/3D data, complex-valued responses, heteroscedastic variance
  estimation, and confidence interval computation. Performance optimized with vectorized
  'R' code and compiled helpers via 'Rcpp'/'RcppArmadillo'. Extends the 'FKreg' toolbox
  of Wang et al. (2022) <https://doi.org/10.48550/arXiv.2204.07716> with 'Python'
  and 'R' ports. Applied in Li et al. (2022) <https://doi.org/10.1016/j.neuroimage.2022.119190>.
  Uses 'NUFFT' methods based on Greengard and Lee (2004) <https://doi.org/10.1137/S003614450343200X>,
  binning-accelerated kernel estimation of Wand (1994) <https://doi.org/10.1080/10618600.1994.10474656>,
  and local polynomial regression framework of Fan and Gijbels (1996, ISBN:978-0412983214).
authors:
- family-names: Wang
  given-names: Ying
  email: yingwangrigel@gmail.com
- family-names: Li
  given-names: Min
  email: minli.231314@gmail.com
preferred-citation:
  type: manual
  title: 'fastLPR: Fast Local Polynomial Regression via NUFFT in MATLAB, Python, and
    R'
  authors:
  - family-names: Wang
    given-names: Ying
    email: yingwangrigel@gmail.com
  - family-names: Li
    given-names: Min
    email: minli.231314@gmail.com
  - family-names: Paz-Linares
    given-names: Deirel
  - family-names: Valdes-Sosa
    given-names: Pedro A.
  year: '2026'
  notes: R package version 1.0.0
  url: https://github.com/rigelfalcon/fastLPR
repository: https://cran.r-universe.dev
repository-code: https://github.com/rigelfalcon/fastLPR
commit: 957f391906e0d332832564c565d957c082268874
url: https://github.com/rigelfalcon/fastLPR
date-released: '2026-04-21'
contact:
- family-names: Wang
  given-names: Ying
  email: yingwangrigel@gmail.com