Returns the value of Akaike Information Criterion evaluated at the estimated parameter array. Note that the Compute method must be invoked first before invoking this method. Otherwise, the return value is 0.

Returns the value of Log-likelihood function evaluated at the estimated parameter array. Note that the Compute method must be invoked first before invoking this method. Otherwise, the return value is 0.

The value of the upperbound on the first element (sigma) of the array of returned estimated coefficients.

Returns the estimated value of sigma squared. Note that the Compute method must be invoked first before invoking this method. Otherwise, the return value is NaN.