Merge pull request !4039 from huangxinjing/fix_pipeline_training_error

Merge pull request !4051 from GongLiyao/resnext_dev

Merge pull request !4048 from hemaohua/master

Merge pull request !4041 from anzhengqi/modify-alexnet-imagenet

Merge pull request !4036 from zhanghuiyao/fix_faster_rcnn

Merge pull request !2972 from xusheng/onnx_deeplabv3+

Merge pull request !3605 from lushuo/fasttext

Merge pull request !3996 from LGOODSKY/master

Merge pull request !3182 from Dammond/onnx_hourglas

Merge pull request !3381 from 徐锦明/master

Merge pull request !4024 from 张杰/master

Merge pull request !2971 from cyx/edsr

Merge pull request !3278 from xusheng/siamrpn

Merge pull request !4003 from anzhengqi/modify-networks

Merge pull request !3721 from Jamesbing/PyramidBox

Merge pull request !3662 from TBD1/RCAN

Merge pull request !4019 from lvmingfu/master

Merge pull request !4026 from 185******25/master

Merge pull request !3870 from 陈静/PAMTRI

Merge pull request !4018 from JoeyLin/master

Merge pull request !3628 from guozhijian/fix_md_column_order

Merge pull request !3266 from yang-how/master

Merge pull request !3990 from Bubble_Five/pointnet

Merge pull request !3973 from hemaohua/master