From: @yuzhenhua666
Reviewed-by: @linqingke,@c_34
Signed-off-by: @linqingke,@c_34

From: @yuzhenhua666
Reviewed-by: @liangchenghui,@c_34
Signed-off-by: @c_34

From: @linqingke
Reviewed-by: @wuxuejian,@liangchenghui
Signed-off-by: @liangchenghui

From: @zyli2020
Reviewed-by: 
Signed-off-by:

From: @yao_yf
Reviewed-by: @zhunaipan,@stsuteng
Signed-off-by: @stsuteng

From: @bai-yangfan
Reviewed-by: @c_34,@guoqi1024
Signed-off-by: @c_34

From: @wanyiming
Reviewed-by: @kingxian,@zh_qh
Signed-off-by: @kingxian

From: @shuzigood
Reviewed-by: @guoqi1024,@yingjy
Signed-off-by: @guoqi1024

From: @huangxinjing
Reviewed-by: @yao_yf,@stsuteng,@kisnwang
Signed-off-by: @stsuteng

Merge pull request !7599 from linqingke/ncf

Merge pull request !6760 from lijiaqi/sparse_optimizer

Merge pull request !7055 from linqingke/deepfm

Merge pull request !6679 from yao_yf/ms_hub_config