About the optimization process

[RunqingJiang]

I‘m sorry to bother you. I have a question that how do you deal the indicator function when you implement the ASGD.I’m looking forward to your reply.

[chihming]

What does the indicator function mean? Could you give me a concrete example?

[RunqingJiang]

Thanks for reply.In HOP-Rec method,the ranking objective function contains an indicator function.As the paper says, you use the ASGD to optimize the target function.How to deal the derivative of discontinuous function like indicator function?

[chihming]

We will cumulate the log-loss when the corresponding condition holds.

[RunqingJiang]

Thanks for your answer,I've got it.