There is an experimental feature "rank" in GoChild website. Players upload sgf files. The system will learn these game records by extracting patterns. Player can then pick any opponent, the system will automatically play a match using data learned from these game records. Elo rating is calculated according to the outcome of the match.

I'm trying to find other website with similar feature. If there is, please tell me. Thanks!

There is the Go Style Web App which you can read more about here. It also analyzes a players games based on patterns and assigns them a rank.

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Patience, grasshopper.

Go Style Web App is very good. Their recent paper, "Evaluating Go Game Records for Prediction of Player Attributes", is well written.

GoChild's machine learning algorithm is based on "Move Prediction in the Game of Go" by Brett Alexander Harrison. Its target is to perform "Move Prediction" based on a set of game records. There are many similarities in these algorithms.

Thanks for sharing this website!