update readme

JiaxiangBU · Mar 22, 2020 · f559004 · f559004
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 ## More
 
-Do the feature engineering on goal and spots with distance(Nandakumar
-2020)
+1.  Do the feature engineering on goal and spots with
+    distance(Nandakumar 2020)
+2.  We ignore the multicollinearity detection in the feature, we choose
+    XGBoost, thus it handles this problem itself, see more
+    <https://datascience.stackexchange.com/a/39806/60879>.
 
 <h4 align="center">