diff --git a/openhgnn/dataset/ohgb.md b/openhgnn/dataset/ohgb.md
index 8d98570b..3e93369f 100644
--- a/openhgnn/dataset/ohgb.md
+++ b/openhgnn/dataset/ohgb.md
@@ -66,8 +66,8 @@ Evaluation metric is Macro-F1 and Micro-F1.
 | GTN          | 0.5791   | 0.6003   |
 | NARS         | 0.5470   | 0.6259   |
 | HPN          | 0.5596   | 0.5703   |
+| SimpleHGN    | 0.5521   | 0.5635   |
 | HAN          | 0.5530   | 0.5605   |
-| SimpleHGN    |          |          |
 | HGT          | 0.5440   | 0.5519   |
 
 ### Dataset `ohgbn-yelp2`
diff --git a/space4hgnn/README.md b/space4hgnn/README.md
index 1343ac19..b80e8e62 100644
--- a/space4hgnn/README.md
+++ b/space4hgnn/README.md
@@ -1,5 +1,7 @@
 # Design Space for Heterogeneous Graph Neural Network
 
+Paper: [Space4HGNN: A Novel, Modularized and Reproducible Platform to Evaluate Heterogeneous Graph Neural Network](https://arxiv.org/abs/2202.09177)
+
 Following [GraphGym](https://github.com/snap-stanford/GraphGym), we release a platform Space4HGNN for designing and evaluating Heterogeneous Graph Neural Networks (HGNN). It is implemented with PyTorch and DGL, using the OpenHGNN package.
 
 ## How to run
@@ -122,7 +124,7 @@ If you encounter the error ``bash: ./space4hgnn/parallel.sh: Permission denied``
 
 ### 3 Analyze the results
 
-#### 3.1 Gather all results 
+#### 3.1 Gather all results
 
 To gather all experiments results, we should run the following command to gather all results into one ``.csv`` file.