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Co-authored-by: Ubuntu <ubuntu@ip-172-31-28-63.ap-northeast-1.compute.internal>

Co-authored-by: Steve <ubuntu@ip-172-31-34-29.ap-northeast-1.compute.internal>

* add label propagation module

* fix prev bug in example

* add dgn

* fix linting and doc issues

* update label propagation & dgn

* update label propagation & dgn

* update example

* fix unit test

* fix agg heritage issue

* fix agg issue

* fix lint

* fix idx

* fix lp gpu issue

* Update

* Update
Co-authored-by: mufeili <mufeili1996@gmail.com>

* [example] label propagation and correct&smooth

* update

* update

* update

* update

* [docs] add speed for c&s

* update

* [fix] remove gat&consistent with the author's code

* [feat] multi-type adj norm supported

* update
Co-authored-by: Mufei Li <mufeili1996@gmail.com>