measurebias: measurebias

In mammask/droughtR: Reduced Bias Drought Forecasting Framework

measurebias

Description

Measures the amount of bias introduced to the training set due to incorrect computation of (N)SPI prior to out-of-sample validation

Usage

measurebias(
  x,
  trainratio,
  validationratio,
  testratio,
  stationaryspi,
  spiscale,
  dist = "gamma"
)

Arguments

x	data.table with rainfall records (Date, Rainfall)
trainratio	numeric; the proportion of the train set
validationratio	numeric; the proportion of the validation set
testratio	numeric; the proportion of the test set
stationaryspi	logical; When TRUE SPI is calculated; when FALSE NSPI is calculated
spiscale	integer; the scale of accumulated precipitation
dist	A character that can be either, "normal" when Normal distribution is used, "gamma" for Gamma, "zigamma" for zero adjusted Gamma and "weibull" for Weibull.

Value

list

Examples

rainfall = dummyrainfall(1950, 2000)
measurebias(rainfall, 0.6, 0.2, 0.2, TRUE, 12, "normal")

mammask/droughtR documentation built on Feb. 25, 2024, 2:26 p.m.