1
$\begingroup$

I need to solve the equation of

$$\log\left(\frac{\operatorname{Pr}(Y=k|X=x)}{\operatorname{Pr}(Y=K|X=x)}\right)$$

$$=\log\left(\frac{\pi_k \exp\left((x-\mu_k)^T|\Sigma|^{-1}(x-\mu_k)\right)} {\pi_K \exp\left((x-\mu_K)^T|\Sigma|^{-1}(x-\mu_K)\right)}\right)$$

to find the following constants $a_k$, $b_{kj}$ and $c_{kjl}$--

enter image description here

using the assumptions of quadratic discriminant analysis.

$\endgroup$

1 Answer 1

1
$\begingroup$

I think I got it, I was supposed to multiply and divide the original expression terms from LDA by $(n-K)/(n_k-1)$ and $(n-K)/(n_K-1)$ respectively. Please let me know if this is correct:

enter image description here

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.