ConvChk.m and ConvChkGlob.m

Module that checks for convergence. Returns true (1) if converged, false (0) otherwise.

The variables used in this module are as follows.

sqErr 

The square of the matrix benefL2  (see Section 4.1.9).

MSE 

The scalar value which is the mean value of all the elements in the matrix sqErr .

msErr 

The array holding MSE  values for each pSS  (see Section 4.1.1) number of epochs, therefore an interpretation of the progress in time of the training session. This variable is plotted across number of epochs at the end of training (see Section 3.1.3.1).

HitTally 

Number of elements of the matrix sqErr  that are below the given error criterion, i.e. acceptable outputs of units in all patterns.

rejected 

Used as convergence criterion in classifier networks with 1-out-of-many encoding at the output layer, where only one unit should be active at any one time. It holds the number of rejected patterns where there are more than one output unit active and close to each other more than the value of the rejectionCriterion  (see Section 4.1.1) variable.

stopper 

Maximum element of the matrix sqErr , therefore the one largest squared error value of the all output unit values across all patterns, i.e. maximum error.

Misses 

Inverse meaning of the variable HitTally , therefore number of elements of the matrix sqErr  that are above given error criterion, therefore outputs across all patterns that are not acceptable.

allstopper 

The array holding stopper  values for each pSS  (see Section 4.1.1) number of epochs, therefore an interpretation of the progress in time of the training session. This variable is plotted across number of epochs at the end of training (see Section 3.1.3.1).

After calculating the variables needed for the convergence check, a message is printed out giving information about all the current error values. Then, according to the selected error criterion a switch statement is executed and the convergence check is decided and returned as a boolean value from the function.

The possible convergence check criteria are described in the following subsections, according to the value of the variable checkType  defined in Section 4.1.1.