GitLab

Co-authored-by: Minjie Wang <wmjlyjemaine@gmail.com>

* init

* rm data

* README

* fix rating values that are not decimal

* rm stale codes

* small fix

* upd

* rewrite decoder

* fix many

* many fix; performance matched

* upd; handle sparse input

* upd

* address comments

* more docstring; download data automatically

* shared param mode