pygsti.tools.effect_penalty

pygsti.tools.effect_penalty(EVec)
Penalty assigned to a POVM effect vector EVec. Effects
must have eigenvalues between 0 and 1. A positive return value indicates this criterion is not met and the E-vector is invalid.
Parameters:EVec (numpy array) – effect vector array of shape (N,1) for some N.
Returns:
Return type:float