(8), we can also obtain the approximate forms,F M (Θ, w) andF L (Θ, w), of the F M -and F L -scores, and then present similar objective functions to that for the F μ -score.
in the next section, we examine experimentally the performance of classifiers obtained by estimating w to maximizeF M (Θ, w) andF L (Θ, w).