Package: diffusion 0.4.0

diffusion: Forecast the Diffusion of New Products

Various diffusion models to forecast new product growth. Currently the package contains Bass, Gompertz, Gamma/Shifted Gompertz and Weibull curves. See Meade and Islam (2006) <doi:10.1016/j.ijforecast.2006.01.005>.

Authors:Oliver Schaer [aut, cre], Nikolaos Kourentzes [aut], Ivan Svetunkov [aut]

diffusion_0.4.0.tar.gz
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diffusion.pdf |diffusion.html✨
diffusion/json (API)
NEWS

# Install 'diffusion' in R:

install.packages('diffusion', repos = c('https://mamut86.r-universe.dev', 'https://cloud.r-project.org'))

Bug tracker:https://github.com/mamut86/diffusion/issues

Datasets:

tsAc - Time series: Assassins Creeds
tsCarstock - Time series: Stock of cars
tsChicken - Time series: Chicken weight
tsCovid - Time series: COVID-19 confirmed cases US
tsIbm - Time series: Sales of IBM Computers
tsMetal - Time series: U.S. Merchant Marine conversion to metal
tsSafari - Time series: Safari Browser market share
tsWindows - Time series: Windows OS Platform Statistics

On CRAN:

diffusion diffusion-models forecasting growth-curve-models lifecycle new-product

5.54 score 8 stars 29 scripts 290 downloads 5 mentions 8 exports 66 dependencies

Last updated 7 months agofrom:13cce4653f. Checks:OK: 7. Indexed: yes.

Target	Result	Date
Doc / Vignettes	OK	Nov 23 2024
R-4.5-win	OK	Nov 23 2024
R-4.5-linux	OK	Nov 23 2024
R-4.4-win	OK	Nov 23 2024
R-4.4-mac	OK	Nov 23 2024
R-4.3-win	OK	Nov 23 2024
R-4.3-mac	OK	Nov 23 2024

Exports:difcurve diffusion is.bass is.diffusion Nortonbass Nortonbass_error Nortonbass_startvalgen seqdiffusion

Dependencies:abind backports boot broom car carData cli colorspace cowplot cpp11 Deriv doBy dplyr fansi farver Formula generics ggplot2 glue gtable isoband labeling lattice lifecycle lme4 lmtest magrittr MASS Matrix MatrixModels mgcv microbenchmark minqa modelr munsell nlme nloptr nnet numDeriv optimx pbkrtest pillar pkgconfig pracma purrr quantreg R6 RColorBrewer Rcpp RcppEigen rlang sandwich scales SparseM stringi stringr survival systemfit tibble tidyr tidyselect utf8 vctrs viridisLite withr zoo

Citation

Development and contributors

Readme and manuals

Help Manual

Help page	Topics
Calculates the values for various diffusion curves, given some parameters.	difcurve
Fit various diffusion curves.	diffusion
Diffusion class checkers	is.bass is.diffusion
Plot a fitted diffusion curve.	plot.diffusion
Predict future periods of a fitted diffusion curve.	predict.diffusion
Print a fitted diffusion curve.	print.diffusion
Time series: Assassins Creeds	tsAc
Time series: Stock of cars	tsCarstock
Time series: Chicken weight	tsChicken
Time series: COVID-19 confirmed cases US	tsCovid
Time series: Sales of IBM Computers	tsIbm
Time series: U.S. Merchant Marine conversion to metal	tsMetal
Time series: Safari Browser market share	tsSafari
Time series: Windows OS Platform Statistics	tsWindows