What is the "w_k" mean?

[Panda_Food]

Dear friends:

Can you help me understand the w_k here?

I believe I understand the other parts in the formula.

(If possible, could provide a short answer so I can better understand?)

[rmwkwok]

Hello @Panda_Food,

w_k^{(j)} is the k-th component of the vector w^{(j)}.

Cheers,
Raymond