diff --git a/fluid/machine_reading_comprehesion/DuReader/README.md b/fluid/machine_reading_comprehesion/README.md
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/README.md
rename to fluid/machine_reading_comprehesion/README.md
diff --git a/fluid/machine_reading_comprehesion/DuReader/args.py b/fluid/machine_reading_comprehesion/args.py
similarity index 71%
rename from fluid/machine_reading_comprehesion/DuReader/args.py
rename to fluid/machine_reading_comprehesion/args.py
index 96422f4460cf0570d410c145f36e5074c9fc1013..228375584eec4d9602bb77a853cfd61c4016e909 100644
--- a/fluid/machine_reading_comprehesion/DuReader/args.py
+++ b/fluid/machine_reading_comprehesion/args.py
@@ -26,16 +26,11 @@ def parse_args():
         '--prepare',
         action='store_true',
         help='create the directories, prepare the vocabulary and embeddings')
+    parser.add_argument('--train', action='store_true', help='train the model')
     parser.add_argument(
-        '--train',
-        action='store_true',
-        help='train the model')
-    parser.add_argument(
-        '--evaluate',
-        action='store_true',
-        help='evaluate the model on dev set')
+        '--evaluate', action='store_true', help='evaluate the model on dev set')
     parser.add_argument(
-        '--predict', 
+        '--predict',
         action='store_true',
         help='predict the answers for test set with trained model')
     parser.add_argument(
@@ -96,55 +91,19 @@ def parse_args():
         default=1000,
         help="cal dev loss every n batches."
         "(default: %(default)d)")
-    parser.add_argument(
-        '--optim', 
-        default='adam', 
-        help='optimizer type')
-    parser.add_argument(
-        '--trainset',
-        nargs='+', 
-        help='train dataset')
-    parser.add_argument(
-        '--devset',
-        nargs='+',
-        help='dev dataset')
-    parser.add_argument(
-        '--testset',
-        nargs='+',
-        help='test dataset')
-    parser.add_argument(
-        '--vocab_dir', 
-        help='dict')
-    parser.add_argument(
-        '--max_p_num', 
-        type=int, 
-        default=5)
-    parser.add_argument(
-        '--max_a_len', 
-        type=int,
-        default=200)
-    parser.add_argument(
-        '--max_p_len', 
-        type=int, 
-        default=500)
-    parser.add_argument(
-        '--max_q_len',
-        type=int,
-        default=9)
-    parser.add_argument(
-        '--doc_num',
-        type=int,
-        default=5)
-    parser.add_argument(
-        '--para_print',
-        action='store_true')
-    parser.add_argument(
-        '--drop_rate', 
-        type=float, default=0.0)
-    parser.add_argument(
-        '--random_seed',
-        type=int,
-        default=123)
+    parser.add_argument('--optim', default='adam', help='optimizer type')
+    parser.add_argument('--trainset', nargs='+', help='train dataset')
+    parser.add_argument('--devset', nargs='+', help='dev dataset')
+    parser.add_argument('--testset', nargs='+', help='test dataset')
+    parser.add_argument('--vocab_dir', help='dict')
+    parser.add_argument('--max_p_num', type=int, default=5)
+    parser.add_argument('--max_a_len', type=int, default=200)
+    parser.add_argument('--max_p_len', type=int, default=500)
+    parser.add_argument('--max_q_len', type=int, default=9)
+    parser.add_argument('--doc_num', type=int, default=5)
+    parser.add_argument('--para_print', action='store_true')
+    parser.add_argument('--drop_rate', type=float, default=0.0)
+    parser.add_argument('--random_seed', type=int, default=123)
     parser.add_argument(
         '--log_path',
         help='path of the log file. If not set, logs are printed to console')
diff --git a/fluid/machine_reading_comprehesion/DuReader/data/download.sh b/fluid/machine_reading_comprehesion/data/download.sh
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/data/download.sh
rename to fluid/machine_reading_comprehesion/data/download.sh
diff --git a/fluid/machine_reading_comprehesion/DuReader/data/md5sum.txt b/fluid/machine_reading_comprehesion/data/md5sum.txt
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/data/md5sum.txt
rename to fluid/machine_reading_comprehesion/data/md5sum.txt
diff --git a/fluid/machine_reading_comprehesion/DuReader/dataset.py b/fluid/machine_reading_comprehesion/dataset.py
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/dataset.py
rename to fluid/machine_reading_comprehesion/dataset.py
diff --git a/fluid/machine_reading_comprehesion/DuReader/rc_model.py b/fluid/machine_reading_comprehesion/rc_model.py
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/rc_model.py
rename to fluid/machine_reading_comprehesion/rc_model.py
diff --git a/fluid/machine_reading_comprehesion/DuReader/run.py b/fluid/machine_reading_comprehesion/run.py
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/run.py
rename to fluid/machine_reading_comprehesion/run.py
diff --git a/fluid/machine_reading_comprehesion/DuReader/run.sh b/fluid/machine_reading_comprehesion/run.sh
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/run.sh
rename to fluid/machine_reading_comprehesion/run.sh
diff --git a/fluid/machine_reading_comprehesion/DuReader/utils/__init__.py b/fluid/machine_reading_comprehesion/utils/__init__.py
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/utils/__init__.py
rename to fluid/machine_reading_comprehesion/utils/__init__.py
diff --git a/fluid/machine_reading_comprehesion/DuReader/utils/download_thirdparty.sh b/fluid/machine_reading_comprehesion/utils/download_thirdparty.sh
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/utils/download_thirdparty.sh
rename to fluid/machine_reading_comprehesion/utils/download_thirdparty.sh
diff --git a/fluid/machine_reading_comprehesion/DuReader/utils/dureader_eval.py b/fluid/machine_reading_comprehesion/utils/dureader_eval.py
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/utils/dureader_eval.py
rename to fluid/machine_reading_comprehesion/utils/dureader_eval.py
diff --git a/fluid/machine_reading_comprehesion/DuReader/utils/get_vocab.py b/fluid/machine_reading_comprehesion/utils/get_vocab.py
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/utils/get_vocab.py
rename to fluid/machine_reading_comprehesion/utils/get_vocab.py
diff --git a/fluid/machine_reading_comprehesion/DuReader/utils/marco_tokenize_data.py b/fluid/machine_reading_comprehesion/utils/marco_tokenize_data.py
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/utils/marco_tokenize_data.py
rename to fluid/machine_reading_comprehesion/utils/marco_tokenize_data.py
diff --git a/fluid/machine_reading_comprehesion/DuReader/utils/marcov1_to_dureader.py b/fluid/machine_reading_comprehesion/utils/marcov1_to_dureader.py
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/utils/marcov1_to_dureader.py
rename to fluid/machine_reading_comprehesion/utils/marcov1_to_dureader.py
diff --git a/fluid/machine_reading_comprehesion/DuReader/utils/marcov2_to_v1_tojsonl.py b/fluid/machine_reading_comprehesion/utils/marcov2_to_v1_tojsonl.py
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/utils/marcov2_to_v1_tojsonl.py
rename to fluid/machine_reading_comprehesion/utils/marcov2_to_v1_tojsonl.py
diff --git a/fluid/machine_reading_comprehesion/DuReader/utils/preprocess.py b/fluid/machine_reading_comprehesion/utils/preprocess.py
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/utils/preprocess.py
rename to fluid/machine_reading_comprehesion/utils/preprocess.py
diff --git a/fluid/machine_reading_comprehesion/DuReader/utils/run_marco2dureader_preprocess.sh b/fluid/machine_reading_comprehesion/utils/run_marco2dureader_preprocess.sh
similarity index 100%
rename from fluid/machine_reading_comprehesion/DuReader/utils/run_marco2dureader_preprocess.sh
rename to fluid/machine_reading_comprehesion/utils/run_marco2dureader_preprocess.sh
diff --git a/fluid/machine_reading_comprehesion/DuReader/vocab.py b/fluid/machine_reading_comprehesion/vocab.py
similarity index 98%
rename from fluid/machine_reading_comprehesion/DuReader/vocab.py
rename to fluid/machine_reading_comprehesion/vocab.py
index 4b66dffa791698ea5194618a2ab755c810b2c8de..14b608052132cc5c6f46810778511bc9a6a6915b 100644
--- a/fluid/machine_reading_comprehesion/DuReader/vocab.py
+++ b/fluid/machine_reading_comprehesion/vocab.py
@@ -25,6 +25,7 @@ class Vocab(object):
     """
     Implements a vocabulary to store the tokens in the data, with their corresponding embeddings.
     """
+
     def __init__(self, filename=None, initial_tokens=None, lower=False):
         self.id2token = {}
         self.token2id = {}
@@ -117,7 +118,9 @@ class Vocab(object):
         Args:
             min_cnt: tokens with frequency less than min_cnt is filtered
         """
-        filtered_tokens = [token for token in self.token2id if self.token_cnt[token] >= min_cnt]
+        filtered_tokens = [
+            token for token in self.token2id if self.token_cnt[token] >= min_cnt
+        ]
         # rebuild the token x id map
         self.token2id = {}
         self.id2token = {}