Dear MATLAB experts, I need your hlep
I'm new in MATLAB world 🙂 and as a beginner I have problem with my task.
I have to forecast demand for one product. I have history data for 5 years (2007 – 2011) and I have to predict demand for that product for 2012. I read the documentation and start with designing neural net. I create 2 types of neural net — Focused Time-Delay NN and NARX. (I have data for additional factors for demand – eg. price … and that's why I choose NARX).
My problem is>
1. Focused Time-Delay NN and NARX NN not predict. The result is simulated data for known demand. (eg. demand for 2011). If the last data for December 2011 is NaN then I get value for that. I am confused — Is that prediction for December 2011 valid?
2. The result from Focused Time-Delay NN and NARX NN (forecast value for December 2011) is different. ( with FTDNN I get 600.000 but with NARX 460.000)
Q1: How to use time series to predict? Q2: What about different delays? Q3: Is data set enough for training and testing?
Please help me to write code for predicting
Thank you very much, I really appreciate all your effort to solve my problem
BB
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