Update train.py

train.py

@@ -224,11 +224,12 @@ if __name__ == "__main__":
     num_anchors = len(anchors)
     #------------------------------------------------------#
     #   Yolov4的tricks应用
-    #   mosaic 马赛克数据增强 True or False
+    #   mosaic 马赛克数据增强 True or False 
+    #   实际测试时mosaic数据增强并不稳定，所以默认为False
     #   Cosine_scheduler 余弦退火学习率 True or False
     #   label_smoothing 标签平滑 0.01以下一般 如0.01、0.005
     #------------------------------------------------------#
-    mosaic = True
+    mosaic = False
     Cosine_scheduler = False
     label_smoothing = 0