!5012 modify readme for GAT

Merge pull request !5012 from zhanke/gat_readme

model_zoo/official/gnn/gat/scripts/run_process_data_ascend.sh

@@ -16,7 +16,7 @@
 
 if [ $# != 2 ]
 then 
-    echo "Usage: sh run_train.sh [SRC_PATH] [DATASET_NAME]"
+    echo "Usage: sh run_train_ascend.sh [SRC_PATH] [DATASET_NAME]"
 exit 1
 fi
 
@@ -42,7 +42,7 @@ MINDRECORD_PATH=`pwd`/data_mr
 
 rm -f $MINDRECORD_PATH/*
 
-cd ../../utils/graph_to_mindrecord || exit
+cd ../../../../utils/graph_to_mindrecord || exit
 
 python writer.py --mindrecord_script $DATASET_NAME \
 --mindrecord_file "$MINDRECORD_PATH/$DATASET_NAME" \

model_zoo/official/gnn/gat/scripts/run_train_ascend.sh

@@ -16,7 +16,7 @@
 
 if [ $# != 1 ]
 then 
-    echo "Usage: sh run_train.sh [DATASET_NAME]"
+    echo "Usage: sh run_train_ascend.sh [DATASET_NAME]"
 exit 1
 fi
 

model_zoo/official/gnn/gat/src/dataset.py

@@ -12,7 +12,18 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 # ============================================================================
-"""Preprocess data obtained for training"""
+"""
+Preprocess data obtained for training
+Cora and Citeseer datasets are supported by our example, the original versions of these datasets are as follows:
+@inproceedings{nr,
+    title={The Network Data Repository with Interactive Graph Analytics and Visualization},
+    author={Ryan A. Rossi and Nesreen K. Ahmed},
+    booktitle={AAAI},
+    url={http://networkrepository.com},
+    year={2015}
+}
+In this example, we use dataset splits provided by https://github.com/kimiyoung/planetoid (Zhilin Yang, William W. Cohen, Ruslan Salakhutdinov, [Revisiting Semi-Supervised Learning with Graph Embeddings](https://arxiv.org/abs/1603.08861), ICML 2016).
+"""
 import numpy as np
 import mindspore.dataset as ds