Neural Network how to change output threshold?

Hi, I created and trained a neural network using Matlab Toolbox to analise if a movie (given its features as input) is violent or not. The output is two classes that represent violent or not violent.

Exemple of a movie output using the network: Class 1 - 0,68; Class 2 - 0,32. Since all my movies on the trained group only had classes like: Class 1 - 1; Class 2 - 0; or Class 1 - 0 ;Class 2 - 1; I would like to know what is the default threshold that says that the output is considered 1 or 0 - I didn't change any setting on that - and how to change the threshold.

Thanks in advance.

[Sivakumaran Chandrasekaran]

after simulation(using sim command), you might be getting a value. you can fix that value as threshold and can work on

Answer 1

[Greg Heath]

Target of a c-class classifier should have columns from the unit matrix eye(c)

 trueindices = [ 5 3 1 2 4 ]
target      = ind2vec(trueindices)
output      = target + 0.15*randn(5)
predindices  = vec2ind(output)

Hope this helps.

Thank you for formally accepting my answer

Greg