From a newbie - Neural Net prediction

Hi all,

As stated in the subject, i'm just starting to learn how to use RapidMiner and I wish to predict the amount of traffic (number of cars) passing a point at certain times of the day (e.g. every 15 mins), having the history (or data) for the past one year.

I have tried using the Neural Net operator in rapidminer with "vehicle_count" as the label (or target) but the predicted "count" when i apply the model is way off the mark.

What am i missing? Please, any help would be very much appreciated.

Thanks,

Leo