O2O

2014- 2014- 4 2010- 1

21097075

POI/DEAL

O2O

smartbox

POI/DEAL

KTV

l 1-2 l 3-5

l 30%+3000w

l Top495%

30.00%

35.00%

40.00%

45.00%

50.00%

55.00%

2015

0101

20

1501

16

2015

0131

20

1502

15

2015

0302

20

1503

17

2015

0401

20

1504

16

2015

0501

20

1505

16

2015

0531

20

1506

15

2015

0701

20

1507

16

2015

0801

20

1508

16

2015

0831

20

1509

15

2015

0930

20

1510

15

smartbox

-

JOIN

POI/DEAL

LABEL

-

KV

hadoop

hive

spark

-

QUERY-DEAL CTR

POI-USER

DEAL-USER

QUERY CTR CVR

DEAL CTR CVR Isnew

USER

POI WIFI DEAL

QUERY-POI

-

querybrandname

POI

POI

-

1

1

2 2

- Application

Flume Impression Log

Labeled Data

Order/Click Log

Deal DB

Model 1

Feature

Offline Training

Model 2

Online Training

Rerank Service

DEBU

G

ABTEST

--

protoBufferLib

serialize

KV

deserialize

OnlineFeatureMap

-

rank

Online learning GBDT

GBDT

LR

-

CTRP(click|show)

acaonP(acaon|click)

P(instant)

E&E

POI/DEAL ?

l l

-

hadoop

hive

spark

storm

ATP

hdfs

hive

hbase

tair

updater

T

-

Geohash

6

3

1

2

X

wifi

Geohash

POI

DEAL

QUERY X

-

POI

-

Label

KV

1

2

3

4

N+1

N+2

N

GBDT

LR

-

2

storm

LR SVM

MinMax Standard

API Command

Chi squared

Topic Model GBDT

Mutual Informaaon

DEBUG

l

-GBDT

Hypothesis

Loss Funcaon

Update Funcaon

Tree 1 Tree 2 Tree M

......

1( ) ( ; )

M

M m mm

h x T x=

= 2

1

1min ( ) min ( ( ))2

N

i ih H h H iL h y h x

=

1, 1

{ , } arg min ( , ( ) ( ; ))m m

N

m m i m m miL y h x T x

=

= +

-GBDT Command sample

. /gbdt_train -train trainset -test testset -model model_path -conf config_file

arguments (conf/gbdt.conf)

dim=100 # depth=4 # iteraaons=100 # shrinkage=0.2 # fraao=1.0 # draao=1.0 # maxBins=40 # bin loss=LogLikelihood # loglikelihood square error init=false # hasInitValue=false # debug=true # debug