[doc] add learningsys paper link
[doc] add learningsys paper link

eric-haibin-lin/mxnet,DR08/mxnet,ForkedReposBak/mxnet,Ldpe2G/mxnet,fullfanta/mxnet,gautamkmr/incubator-mxnet,navrasio/mxnet,Mega-DatA-Lab/mxnet,stefanhenneking/mxnet,hpi-xnor/BMXNet,hotpxl/mxnet,nicklhy/mxnet,madjam/mxnet,Ldpe2G/mxnet,kevinthesun/mxnet,hesseltuinhof/mxnet,dmlc/mxnet,coder-james/mxnet,crazy-cat/incubator-mxnet,arank/mxnet,dmlc/mxnet,xcgoner/dist-mxnet,reminisce/mxnet,jamesliu/mxnet,yuruofeifei/mxnet,weleen/mxnet,vikingMei/mxnet,solin319/incubator-mxnet,vikingMei/mxnet,piiswrong/mxnet,arikpoz/mxnet,ForkedReposBak/mxnet,indhub/mxnet,zhreshold/mxnet,likelyzhao/mxnet,jermainewang/mxnet,fullfanta/mxnet,likelyzhao/mxnet,thirdwing/mxnet,Guneet-Dhillon/mxnet,Guneet-Dhillon/mxnet,precedenceguo/mxnet,ptrendx/mxnet,jamesliu/mxnet,arank/mxnet,CodingCat/mxnet,Guneet-Dhillon/mxnet,LinkHS/incubator-mxnet,yuruofeifei/mxnet,formath/mxnet,jermainewang/mxnet,arikpoz/mxnet,rishita/mxnet,precedenceguo/mxnet,DR08/mxnet,DR08/mxnet,hotpxl/mxnet,danithaca/mxnet,jiajiechen/mxnet,hesseltuinhof/mxnet,nicklhy/mxnet,TuSimple/mxnet,jennyzhang0215/incubator-mxnet,jamesliu/mxnet,apache/incubator-mxnet,dmlc/mxnet,kkk669/mxnet,ykim362/mxnet,ptrendx/mxnet,vikingMei/mxnet,antoan2/incubator-mxnet,vikingMei/mxnet,weleen/mxnet,EvanzzzZ/mxnet,gautamkmr/incubator-mxnet,Prasad9/incubator-mxnet,ShownX/incubator-mxnet,yuruofeifei/mxnet,saurabh3949/mxnet,larroy/mxnet,jermainewang/mxnet,Guneet-Dhillon/mxnet,wangyum/mxnet,ZihengJiang/mxnet,formath/mxnet,EvanzzzZ/mxnet,fullfanta/mxnet,hotpxl/mxnet,ZihengJiang/mxnet,Northrend/mxnet,solin319/incubator-mxnet,CodingCat/mxnet,fullfanta/mxnet,saurabh3949/mxnet,smolix/incubator-mxnet,precedenceguo/mxnet,hesseltuinhof/mxnet,Ldpe2G/mxnet,Northrend/mxnet,eric-haibin-lin/mxnet,rishita/mxnet,hesseltuinhof/mxnet,LinkHS/incubator-mxnet,indhub/mxnet,EvanzzzZ/mxnet,jiajiechen/mxnet,stefanhenneking/mxnet,reminisce/mxnet,LinkHS/incubator-mxnet,lxn2/mxnet,zhreshold/mxnet,jiajiechen/mxnet,pluskid/mxnet,DR08/mxnet,coder-james/mxnet,kkk669/mxnet,TuSimple/mxnet,lxn2/mxnet,navrasio/mxnet,ptrendx/mxnet,thirdwing/mxnet,jamesliu/mxnet,rishita/mxnet,wangyum/mxnet,weleen/mxnet,xcgoner/dist-mxnet,vikingMei/mxnet,wangyum/mxnet,gautamkmr/incubator-mxnet,eric-haibin-lin/mxnet,tlby/mxnet,yajiedesign/mxnet,sxjscience/mxnet,yuruofeifei/mxnet,nicklhy/mxnet,precedenceguo/mxnet,jennyzhang0215/incubator-mxnet,eric-haibin-lin/mxnet,yuruofeifei/mxnet,antoan2/incubator-mxnet,eric-haibin-lin/mxnet,tlby/mxnet,apaleyes/mxnet,sergeykolychev/mxnet,ykim362/mxnet,navrasio/mxnet,hpi-xnor/BMXNet,ptrendx/mxnet,szha/mxnet,weleen/mxnet,luoyetx/mxnet,rahul003/mxnet,lxn2/mxnet,precedenceguo/mxnet,jiajiechen/mxnet,Ldpe2G/mxnet,jamesliu/mxnet,tlby/mxnet,arank/mxnet,kevinthesun/mxnet,larroy/mxnet,arikpoz/mxnet,coder-james/mxnet,kevinthesun/mxnet,EvanzzzZ/mxnet,yajiedesign/mxnet,sergeykolychev/mxnet,mbaijal/incubator-mxnet,rishita/mxnet,thirdwing/mxnet,jiajiechen/mxnet,piiswrong/mxnet,Prasad9/incubator-mxnet,jiajiechen/mxnet,solin319/incubator-mxnet,kevinthesun/mxnet,rahul003/mxnet,larroy/mxnet,jermainewang/mxnet,lxn2/mxnet,ptrendx/mxnet,saurabh3949/mxnet,piiswrong/mxnet,formath/mxnet,Guneet-Dhillon/mxnet,ShownX/incubator-mxnet,Northrend/mxnet,danithaca/mxnet,crazy-cat/incubator-mxnet,mbaijal/incubator-mxnet,pluskid/mxnet,apaleyes/mxnet,ZihengJiang/mxnet,arank/mxnet,fullfanta/mxnet,coder-james/mxnet,sergeykolychev/mxnet,Mega-DatA-Lab/mxnet,CodingCat/mxnet,navrasio/mxnet,sxjscience/mxnet,antoan2/incubator-mxnet,tornadomeet/mxnet,dmlc/mxnet,zhreshold/mxnet,Ldpe2G/mxnet,smolix/incubator-mxnet,stefanhenneking/mxnet,Prasad9/incubator-mxnet,ykim362/mxnet,wangyum/mxnet,crazy-cat/incubator-mxnet,thirdwing/mxnet,madjam/mxnet,rahul003/mxnet,rishita/mxnet,piiswrong/mxnet,LinkHS/incubator-mxnet,LinkHS/incubator-mxnet,sxjscience/mxnet,EvanzzzZ/mxnet,lxn2/mxnet,szha/mxnet,hpi-xnor/BMXNet,tornadomeet/mxnet,szha/mxnet,solin319/incubator-mxnet,ptrendx/mxnet,arank/mxnet,precedenceguo/mxnet,Northrend/mxnet,sergeykolychev/mxnet,thirdwing/mxnet,jennyzhang0215/incubator-mxnet,danithaca/mxnet,ykim362/mxnet,arank/mxnet,Guneet-Dhillon/mxnet,rishita/mxnet,sxjscience/mxnet,danithaca/mxnet,tornadomeet/mxnet,smolix/incubator-mxnet,luoyetx/mxnet,ZihengJiang/mxnet,fullfanta/mxnet,formath/mxnet,pluskid/mxnet,vikingMei/mxnet,eric-haibin-lin/mxnet,reminisce/mxnet,sergeykolychev/mxnet,ykim362/mxnet,thirdwing/mxnet,tornadomeet/mxnet,smolix/incubator-mxnet,leezu/mxnet,Guneet-Dhillon/mxnet,Prasad9/incubator-mxnet,hesseltuinhof/mxnet,likelyzhao/mxnet,CodingCat/mxnet,smolix/incubator-mxnet,solin319/incubator-mxnet,yuruofeifei/mxnet,danithaca/mxnet,rahul003/mxnet,nicklhy/mxnet,EvanzzzZ/mxnet,Prasad9/incubator-mxnet,indhub/mxnet,jermainewang/mxnet,thirdwing/mxnet,mbaijal/incubator-mxnet,DickJC123/mxnet,nicklhy/mxnet,gautamkmr/incubator-mxnet,Prasad9/incubator-mxnet,indhub/mxnet,yajiedesign/mxnet,formath/mxnet,apaleyes/mxnet,LinkHS/incubator-mxnet,xcgoner/dist-mxnet,indhub/mxnet,arikpoz/mxnet,larroy/mxnet,larroy/mxnet,solin319/incubator-mxnet,antoan2/incubator-mxnet,likelyzhao/mxnet,ForkedReposBak/mxnet,zhreshold/mxnet,ptrendx/mxnet,Northrend/mxnet,mbaijal/incubator-mxnet,arank/mxnet,xcgoner/dist-mxnet,rishita/mxnet,precedenceguo/mxnet,xcgoner/dist-mxnet,ShownX/incubator-mxnet,EvanzzzZ/mxnet,Ldpe2G/mxnet,jennyzhang0215/incubator-mxnet,piiswrong/mxnet,navrasio/mxnet,ForkedReposBak/mxnet,sxjscience/mxnet,pluskid/mxnet,zhreshold/mxnet,wangyum/mxnet,stefanhenneking/mxnet,solin319/incubator-mxnet,leezu/mxnet,szha/mxnet,szha/mxnet,luoyetx/mxnet,Northrend/mxnet,leezu/mxnet,smolix/incubator-mxnet,weleen/mxnet,pluskid/mxnet,smolix/incubator-mxnet,kevinthesun/mxnet,likelyzhao/mxnet,sxjscience/mxnet,ShownX/incubator-mxnet,saurabh3949/mxnet,stefanhenneking/mxnet,hpi-xnor/BMXNet,kevinthesun/mxnet,weleen/mxnet,smolix/incubator-mxnet,Ldpe2G/mxnet,arikpoz/mxnet,gautamkmr/incubator-mxnet,formath/mxnet,larroy/mxnet,likelyzhao/mxnet,xcgoner/dist-mxnet,luoyetx/mxnet,DickJC123/mxnet,fullfanta/mxnet,hesseltuinhof/mxnet,tornadomeet/mxnet,likelyzhao/mxnet,ForkedReposBak/mxnet,pluskid/mxnet,Northrend/mxnet,ZihengJiang/mxnet,lxn2/mxnet,dmlc/mxnet,arank/mxnet,hpi-xnor/BMXNet,sxjscience/mxnet,Prasad9/incubator-mxnet,hotpxl/mxnet,TuSimple/mxnet,tlby/mxnet,ShownX/incubator-mxnet,crazy-cat/incubator-mxnet,szha/mxnet,pluskid/mxnet,lxn2/mxnet,hotpxl/mxnet,reminisce/mxnet,Mega-DatA-Lab/mxnet,ptrendx/mxnet,vikingMei/mxnet,antoan2/incubator-mxnet,LinkHS/incubator-mxnet,mbaijal/incubator-mxnet,Mega-DatA-Lab/mxnet,ZihengJiang/mxnet,gautamkmr/incubator-mxnet,TuSimple/mxnet,likelyzhao/mxnet,DickJC123/mxnet,Mega-DatA-Lab/mxnet,luoyetx/mxnet,yajiedesign/mxnet,Northrend/mxnet,TuSimple/mxnet,ykim362/mxnet,Mega-DatA-Lab/mxnet,antoan2/incubator-mxnet,jennyzhang0215/incubator-mxnet,leezu/mxnet,dmlc/mxnet,zhreshold/mxnet,tornadomeet/mxnet,ForkedReposBak/mxnet,reminisce/mxnet,ykim362/mxnet,crazy-cat/incubator-mxnet,formath/mxnet,tornadomeet/mxnet,vikingMei/mxnet,kkk669/mxnet,Ldpe2G/mxnet,saurabh3949/mxnet,ForkedReposBak/mxnet,nicklhy/mxnet,TuSimple/mxnet,ptrendx/mxnet,zhreshold/mxnet,jennyzhang0215/incubator-mxnet,rahul003/mxnet,madjam/mxnet,stefanhenneking/mxnet,dmlc/mxnet,jiajiechen/mxnet,saurabh3949/mxnet,hotpxl/mxnet,nicklhy/mxnet,lxn2/mxnet,nicklhy/mxnet,TuSimple/mxnet,DR08/mxnet,tlby/mxnet,nicklhy/mxnet,apaleyes/mxnet,CodingCat/mxnet,madjam/mxnet,jamesliu/mxnet,DR08/mxnet,szha/mxnet,coder-james/mxnet,weleen/mxnet,pluskid/mxnet,navrasio/mxnet,reminisce/mxnet,xcgoner/dist-mxnet,reminisce/mxnet,xcgoner/dist-mxnet,ShownX/incubator-mxnet,luoyetx/mxnet,leezu/mxnet,coder-james/mxnet,kkk669/mxnet,navrasio/mxnet,Mega-DatA-Lab/mxnet,apache/incubator-mxnet,TuSimple/mxnet,zhreshold/mxnet,jennyzhang0215/incubator-mxnet,rahul003/mxnet,jiajiechen/mxnet,kevinthesun/mxnet,eric-haibin-lin/mxnet,yajiedesign/mxnet,wangyum/mxnet,madjam/mxnet,TuSimple/mxnet,apaleyes/mxnet,mbaijal/incubator-mxnet,solin319/incubator-mxnet,hpi-xnor/BMXNet,zhreshold/mxnet,CodingCat/mxnet,saurabh3949/mxnet,navrasio/mxnet,Mega-DatA-Lab/mxnet,ShownX/incubator-mxnet,DickJC123/mxnet,yuruofeifei/mxnet,leezu/mxnet,jermainewang/mxnet,antoan2/incubator-mxnet,sxjscience/mxnet,kkk669/mxnet,DR08/mxnet,tlby/mxnet,kevinthesun/mxnet,indhub/mxnet,mbaijal/incubator-mxnet,madjam/mxnet,dmlc/mxnet,DR08/mxnet,sergeykolychev/mxnet,yuruofeifei/mxnet,antoan2/incubator-mxnet,madjam/mxnet,apache/incubator-mxnet,ZihengJiang/mxnet,ykim362/mxnet,tornadomeet/mxnet,apaleyes/mxnet,Ldpe2G/mxnet,larroy/mxnet,likelyzhao/mxnet,yajiedesign/mxnet,wangyum/mxnet,yuruofeifei/mxnet,arikpoz/mxnet,precedenceguo/mxnet,yajiedesign/mxnet,precedenceguo/mxnet,tlby/mxnet,ykim362/mxnet,TuSimple/mxnet,hpi-xnor/BMXNet,xcgoner/dist-mxnet,crazy-cat/incubator-mxnet,jennyzhang0215/incubator-mxnet,LinkHS/incubator-mxnet,jermainewang/mxnet,jennyzhang0215/incubator-mxnet,reminisce/mxnet,hesseltuinhof/mxnet,szha/mxnet,solin319/incubator-mxnet,crazy-cat/incubator-mxnet,luoyetx/mxnet,sergeykolychev/mxnet,piiswrong/mxnet,Prasad9/incubator-mxnet,hesseltuinhof/mxnet,yajiedesign/mxnet,EvanzzzZ/mxnet,CodingCat/mxnet,danithaca/mxnet,wangyum/mxnet,LinkHS/incubator-mxnet,ForkedReposBak/mxnet,ShownX/incubator-mxnet,jermainewang/mxnet,reminisce/mxnet,DR08/mxnet,CodingCat/mxnet,gautamkmr/incubator-mxnet,danithaca/mxnet,weleen/mxnet,piiswrong/mxnet,leezu/mxnet,arank/mxnet,formath/mxnet,eric-haibin-lin/mxnet,indhub/mxnet,pluskid/mxnet,larroy/mxnet,Guneet-Dhillon/mxnet,rishita/mxnet,madjam/mxnet,wangyum/mxnet,rahul003/mxnet,saurabh3949/mxnet,hotpxl/mxnet,stefanhenneking/mxnet,apaleyes/mxnet,luoyetx/mxnet,ForkedReposBak/mxnet,hpi-xnor/BMXNet,ptrendx/mxnet,kkk669/mxnet,stefanhenneking/mxnet,Mega-DatA-Lab/mxnet,arikpoz/mxnet,madjam/mxnet,tlby/mxnet,rahul003/mxnet,arikpoz/mxnet,hesseltuinhof/mxnet,leezu/mxnet,rishita/mxnet,Prasad9/incubator-mxnet,navrasio/mxnet,jamesliu/mxnet,indhub/mxnet,jamesliu/mxnet,Guneet-Dhillon/mxnet,coder-james/mxnet,weleen/mxnet,tlby/mxnet,danithaca/mxnet,piiswrong/mxnet,piiswrong/mxnet,szha/mxnet,arikpoz/mxnet,mbaijal/incubator-mxnet,formath/mxnet,kkk669/mxnet,tlby/mxnet,stefanhenneking/mxnet,kkk669/mxnet,jiajiechen/mxnet,yajiedesign/mxnet,CodingCat/mxnet,ZihengJiang/mxnet,reminisce/mxnet,tornadomeet/mxnet,apaleyes/mxnet,ShownX/incubator-mxnet,gautamkmr/incubator-mxnet,sergeykolychev/mxnet,kkk669/mxnet,crazy-cat/incubator-mxnet,lxn2/mxnet,fullfanta/mxnet,jermainewang/mxnet,thirdwing/mxnet,ZihengJiang/mxnet,leezu/mxnet,saurabh3949/mxnet,danithaca/mxnet,fullfanta/mxnet,Northrend/mxnet,apache/incubator-mxnet,thirdwing/mxnet,mbaijal/incubator-mxnet,vikingMei/mxnet,eric-haibin-lin/mxnet,sxjscience/mxnet,smolix/incubator-mxnet,crazy-cat/incubator-mxnet,jamesliu/mxnet,rahul003/mxnet,coder-james/mxnet,luoyetx/mxnet,indhub/mxnet,gautamkmr/incubator-mxnet,dmlc/mxnet,kevinthesun/mxnet,larroy/mxnet,sergeykolychev/mxnet,EvanzzzZ/mxnet,hpi-xnor/BMXNet,coder-james/mxnet,hotpxl/mxnet,hotpxl/mxnet,antoan2/incubator-mxnet,apaleyes/mxnet