Usage
crost.ma(data,h=10,w=NULL,nop=c(2,1),type=c("croston","sba","sbj"), cost=c("mar","msr","mae","mse"),outplot=c(FALSE,TRUE), na.rm=c(FALSE,TRUE))
Arguments
data
Intermittent demand time series.
w
Moving average order. If w == NULL then moving average orders are optimised. If w is a single value then the same order is used for smoothing both the demand and the intervals. If two values are provided then the second is used to smooth the intervals.
nop
Specifies the number of model parameters. Used only if they are optimised. 1. 1 - Demand and interval moving average order are the same; 2. 2 - Different demand and interval orders.
type
Croston's method variant: 1. "croston" Croston's method; 2. "sba" Syntetos-Boylan approximation; 3. "sbj" Shale-Boylan-Johnston.
cost
Cost function used for optimisation: 1. "mar" - Mean Absolute Rate; 2. "msr" - Mean Squared Rate; 3. "mae" - Mean Absolute Error; 4. "mse" - Mean Squared Error.
outplot
If TRUE a plot of the forecast is provided.
na.rm
A logical value indicating whether NA values should be remove using the method.