fix abtest doc

doc/ABTEST_IN_PADDLE_SERVING.md

@@ -21,7 +21,7 @@ The following Python code will process the data `test_data/part-0` and write to
 
 [//file]:#process.py
 ``` python
-from imdb_reader import IMDBDataset
+from paddle_serving_app.reader import IMDBDataset
 imdb_dataset = IMDBDataset()
 imdb_dataset.load_resource('imdb.vocab')
 
@@ -78,7 +78,7 @@ with open('processed.data') as f:
         feed = {"words": word_ids}
         fetch = ["acc", "cost", "prediction"]
         [fetch_map, tag] = client.predict(feed=feed, fetch=fetch, need_variant_tag=True)
-        if (float(fetch_map["prediction"][1]) - 0.5) * (float(label[0]) - 0.5) > 0:
+        if (float(fetch_map["prediction"][0][1]) - 0.5) * (float(label[0]) - 0.5) > 0:
             cnt[tag]['acc'] += 1
         cnt[tag]['total'] += 1
 

doc/ABTEST_IN_PADDLE_SERVING_CN.md

@@ -20,7 +20,7 @@ sh get_data.sh
 下面Python代码将处理`test_data/part-0`的数据，写入`processed.data`文件中。
 
 ```python
-from imdb_reader import IMDBDataset
+from paddle_serving_app.reader import IMDBDataset
 imdb_dataset = IMDBDataset()
 imdb_dataset.load_resource('imdb.vocab')
 
@@ -76,7 +76,7 @@ with open('processed.data') as f:
         feed = {"words": word_ids}
         fetch = ["acc", "cost", "prediction"]
         [fetch_map, tag] = client.predict(feed=feed, fetch=fetch, need_variant_tag=True)
-        if (float(fetch_map["prediction"][1]) - 0.5) * (float(label[0]) - 0.5) > 0:
+        if (float(fetch_map["prediction"][0][1]) - 0.5) * (float(label[0]) - 0.5) > 0:
             cnt[tag]['acc'] += 1
         cnt[tag]['total'] += 1