What is the minimum sample that I should take to do forecasting of a vegetable sold by company on per day basis. I am using Functional Artificial Neural Network to do the forecasting. I have taken data of 40 days and I am getting large error.

During training of my FLANN model :

BLUE Line ---> Actual sales data,

GREEN Line -----> Predicted sales data

[Greg Heath]

Insufficient information.

Why is the modifier "Functional" used? I have never seen it before.

What are the inputs and targets?

What MATLAB NNET are you using?

[ I N ] = size(input) = ?

[ O N ] = size(target) = ?

 H = number of hidden nodes?