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1
Recent Activities for the Rakuten Global e-commerce
Atividades de Pesquisa da Rakuten para o e-commerce Global
Rakuten Institute of Technology, New York
2
Rakuten Institute of Technology
Turning emerging and growing new technology seedsinto new business/service opportunities
to enrich the internet life (& real life) all over the world
Mission
The Next Reality- New reality through emerging technologies -
Concept Tokyo & NY
Strategic R&D organization for Rakuten group
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Our goal
How was the carrot you got
yesterday?Today this fresh lettuce is good Recommendation
You will take a
vacation?
The travel agent over there gives
good serviceAffiliation
You are on diet, but like sweet food?
This sweet tomato is good for your health
Personalization
Old-fashioned vegetable shop
owner
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Our goal
You want to know the
vegetable in this photo…
It is an artichoke.
Image recognition
You can boil it and eat it with
mayonnaiseWorld knowledge
Recently, it is very popular among young
people
Opinion mining
Old-fashioned vegetable shop
owner
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Create happy shopping experiences
Hints from a legendary & successful owner at a market
Understand language
Master his products
Understand the customers
World Knowledge
Recognize image, video
Remember for the future
Manipulate knowledge
Think, inference, analysis
Situation adaptation
Friendly service
NLP
Multi-media
Data
Semantic
Data
I/F
AI
Infrastructure
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Research Topics
1. Rakuten Hub Category
2. Category Correction
3. Attribute Extraction
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Research Topics
1. Rakuten Hub Category
2. Category Correction
3. Attribute Extraction
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Different Category Structures of Rakuten Group Companies
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Hub and Spoke Model
HUB
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Global vs. Local
Problem: Culture/Market dependencyWe need one uniform DB structure = Global Catalog
Organize globally Adapt Locally
Sports Equipment
PelotaBaseball
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Overview
attribute value
Product information by Attributes and
values
Product types
Product category for display is decided by “product types” and a set of attribute values
Mapping
R-HC Local Hierarchy
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Definition of Global Category
135 top categoriesCulture/country independent
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Definition of Attribute (bag)
Set of attributes for each category
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Tool to be provided
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Research Topics
1. Rakuten Hub Category
2. Category Correction
3. Attribute Extraction
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2. Category Correction
Muffler
SakeNOISE!
Muffler
Muffler
Users are annoyed, Merchants are in trouble → Detecting the misplaced products → Reassigning them into the right genres
Many products are assigned into a wrong category
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Bottle720mlJapan
DeliciousTengumailight
Japanese SakeJapanese Sake
TengumaiNote:“Tengumai” is a famous Japanese sake (rice wine)
The words, which are assigned into only one category automatically
dictionary
Definitive Category Words (DCW)
Modified TF/IDF strategies
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Actual Contributions
0
10
20
30
40
Jul. Aug. Sep. Oct. Nov.
GMS
0
10
20
30
40
Jul. Aug. Sep. Oct. Nov.
GMS
(1) 2 big merchants2 million products (2011/9)
FIX Merchant A FIX2011 2011
(3) Expanding to more categories
(2) 2 categories, which include 1,000 merchants1 million products (2011/11)
Merchant B
→ Contributed to GMS
5 million products (2012/10)
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Research Topics
1. Rakuten Hub Category
2. Category Correction
3. Attribute Extraction
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3. Automatic Attribute Extraction
Unsupervised Extraction of Attribute and value from product description
Attribute Value
Color Red
County Chile
Grape Cabernet franc,Merlot,
Vintage 2009
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Product information is embedded in texts
38% 62%
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Synonym Detection
• Attribute names that share a popular value and don’t appear in the same table are synonym
RegionFrance, German, Italy …
Alcohol
District
Temperaturefor drinking
15 degree, 8 degree …
Synonym
Not Synonym
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KB for wine category
Grape Type
Volume Region Winery Taste
Chardonnay 750ML France Farnese Dry
Chardonnay100%
720ML Italy Mas de Monistrol
Full body
Merlot 375ML Spain Leroy Medium body
Riesling 500ML Chile M. Chapoutier Slightly sweet
Syrah 1500ML German Mastroberardino
Sweet
Grenache 360ML Australia Santero Medium dry
Merlot 200ML America Saltarelli Extremely sweet
Tempranillo 3000ML Bordeaux Cavicchioli Medium dry
Sangiovese 1800ML Champagne Fontodi Red Full body
Syrah100% 1000ML Argentina Ca'Rugate Middle sweet
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Our Goal
Technologies for
Happy
Shopping
Experiences
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Our Goal