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NEWS.Rmd
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---
output:
md_document:
variant: markdown_github
---
```{r Setup, include=FALSE}
library(gasper)
knitr::opts_chunk$set(
collapse = TRUE,
out.width = '50%',
comment = "#>"
)
```
gasper News
# gasper 1.1.6 (02/28/2024)
* add `SuiteSparseData` data frame mirrors the structure presented on the SuiteSparse Matrix Collection website. Enables now easily query and download specific matrices directly from the Collection.
* add GSP intro in vignettes
# gasper 1.1.5 (10/27/2023)
* change `b` by `beta` in `betathresh` and `SUREThresh` to avoid confusion with the parameter that control the number of scales in other functions.
* add Level dependent SURE thresholding `LD_SUREthresh`.
* add graph Fourier transform functions `forward_gft`/`inverse_gft`.
* add `spectral_coords` function to compute spectral coordinates of a graph using the two smallest non-zero eigenvalues of the graph Laplacian.
* add random walk and normalized Laplacian matrix to `laplacian_mat` (keep unnormalized as default).
* add more info in doc.
* add `localize_gft`/`localize_sgwt` fun.
* add custom frame filters support (in `forward/inverse_sgwt`, `HPFVN`, `plot_filter` and `tight_frame`) by passing additional arguments (`filter_params`/`filter_func`).
* add `get_graph_info` to retrieve from SuiteSparse the two/three tables with "Matrix Information," "Matrix Properties" and, if available, "SVD Statistics".
* change `info` output in `dowload_graph` to `temp` to access temp dir instead.
* add optional logical argument `svd` to fetch singular values is needed and provided.
# gasper 1.1.4 relase (08/26/2023)
* satisfy CRAN policy (by removing external download).
* CRAN resubmission.
# gasper 1.1.3 relase (02/11/2023)
* fix CITATION file to work properly when the package is not installed.
* fix error in `HPFVN`.
# gasper 1.1.2 relase (01/06/2023)
* satisfy CRAN policy: 'Packages which use Internet resources should fail gracefully with an informative message
if the resource is not available or has changed (and not give a check warning nor error).'
* CRAN resubmission.
# gasper 1.1.1 release (02/16/2021)
* correction of an error in `laplacian_mat` function (in the case of full matrix input).
* replace `graphname` by `matrixname` (matrices in the SuiteSparse are not necessarily adjacency matrices).
* error correction in `SNR` fun (wrong output for matrices)
* add Peak Signal to Noise Ratio (`PNSR`) function.
# gasper 1.1.0 release (02/09/2021)
* fix bug in `download_graph` function for downloading graph matrix without coordinates.
* add citation info issue#1.
* bibliography of SURE paper updated in the vignettes.
* add boolean argument allowing to export the coefficients of the frame after thresholding (TRUE by default) in `SURE*thresh` functions (FALSE save memory allocation for large graphs).
* add a new output `dim` to `download_graph` providing a url to a temporary file containing the information about the considered matrix.
* add new argument to `randsignal` to avoid full spectrum calculation.
* add new import (methods, Matrix, RSpectra) to consider large sparse matrices.
* modify `randsignal` to benefit from sparse computation (much faster).
* add `SNR` function (to remove rwavelet import used only in vignettes)
* add a new output `dim` to `download_graph` providing the numbers of rows, columns and numerically nonzero elements of the sparse matrix.
* add Matrix Market files import (remove data.frame storage to save a lot of memory and speed-up computation) to `download_graph`.
* add fast forward/inverse sgwt functions (`foward_sgwt` and `inverse_sgwt`). Faster than calculation via `tight_frame`/`analysis` and potentially useful when frame elements do not need to be calculated.
* add graph extension of the Von Neummann variance estimator using finest scale coefficients (`HPFVN`).
* add kernel tight-frame evaluation function `zetav` (to avoid redundancy).
* add new `plot_filter` function (plot wavelet tight-frame functions).
# gasper 1.0.1 release (07/27/2020)
* fix warnings bug `SUREthresh` functions.
* adapt DESCRIPTION to meet CRAN's expectations (i.e., omit the redundant "in R" from the title, use the Authors\@R field and declare Maintainer, Authors and Contributors with their appropriate roles with person() calls, do not start the description with "This package", package name, title or similar. Just start with "Provides ..." or similar, do not start the description with "This package", package name, title or similar).
* optionally specify a RNG seed (for reproducible experiments) in swissroll.R.
* remove `adjacency_mat` N arg.
* CRAN resubmission.
# gasper 1.0.0 release (07/23/2020)
* First release.
* CRAN submission.