Controlling elements of nnTool
To run NNTool, you have to execute the command in the command box MATLAB:
>> nntool
After that the main NNTool window will appear, it is called “Network/Data Manager”
Fig. 1.14. Main window of NNTool
“Networks and Data” panel has functional keys with such functions.
Help – brief description of controlling elements of the given window;
New data – calling the window, with the ability to create new set of data
New Network – calling the window to create new network;
Import – import of data from the MATLAB working space to the NNTool variable space;
Export – data export from NNTool variable space to the MATLAB working space.
View – graphical representation of the given network architecture;
Delete – deleting of the given object.
On the “Networks Only” panel situated keys working only with networks. After choosing any other object these keys become disabled.
While working with NNTool it is necessary to remember that keys View, Delete, Initialize, Simulate, Train and Adapt acts applicable to the object that is marked in the given instant. If there is no such object or it is impossible to perform the given action, corresponding key is disabled.
TASK
Create and train neuron network to perform an operation y=x12+x2, if the input order is given P1=[1 0.5 0 1; -2 0 0.5 1] and aims T1=[-1 0.25 0.5 2] .