Mechanisms behing catalog personalization at vente-privee

1. Personalization and
Recommendation Systems at
vente-privee
Betty Moreschini
Software Engineer
@bettymoreschini
@vpTech #VPTech

2. |-
Vente-privee
28/06/2018 Recommendation Systems at vente-privee2
 Destocking from other brands
• 54 000 flash sales in 2017 (~150 per day)
• 7 000 brands
 Present in 14 countries
• 72M users (21M in France)
• 2M unique visitors / day

3. |-
VP Tech
28/06/2018 Recommendation Systems at vente-privee3
 500+ persons in IT department
 ↗273 in 2017
 Diversity of technologies
• C#
• GoLang
• JavaScript
• Android
• iOS
• Haskell
• Ruby on Rails
• Python
• Kafka
• Elasticsearch
• RabbitMQ
• Node.js
• AWS
• Kubernetes
• …
We are hiring!

4. |-
Data Science at vente-privee
Intermediate purchase order
Automated articles classification from pictures
Customization
• Home Page
• Order Confirmation email
• Similar articles
28/06/2018 Recommendation Systems at vente-privee4

5. |- 28/06/2018 Recommendation Systems at vente-privee5
Zoom on Customization

6. |- 28/06/2018 Recommendation Systems at Vente Privée6
← One day
carrousel
← B2B
ordering
rule

7. |-
Home Page Customization: Obstacles
28/06/2018 Recommendation Systems at vente-privee7
Business
• Conflicts between business and technology:
B2B rules in Home Page ordering
Technical
• Incomplete or incorrect classifications

8. |-
Home Page Customization: Impacts
28/06/2018 Recommendation Systems at vente-privee8
AB Test: 1 month, 6M users
Personnalisation with B2B rules
• Entry rate: +1.5%
• Conversion rate: +1.4%
Personnalisation without B2B rules
• Entry rate: +3.9%
• Conversion rate: +2.3%

9. |- 28/06/2018 Recommendation Systems at vente-privee9
Product Customization: Catalog Customization

10. |-
Catalog Customization: Architecture
28/06/2018 Recommendation Systems at vente-privee10
Tracking
Recommendation
Aggregator
Member
Aggregator
Product
Aggregator
Popularity
Aggregator
Predict
Current
Operations
: Cassandra

11. |-
Catalog Customization: Architecture
28/06/2018 Recommendation Systems at vente-privee10
Tracking : Cassandra

12. |-
Catalog Customization: Architecture
28/06/2018 Recommendation Systems at vente-privee10
Product
Aggregator
User interaction with article
: Cassandra

13. |-
Product Aggregator
28/06/2018 Recommendation Systems at vente-privee11
User interacts with article
Member Product Score
Member1 Product1 32
Member1 Product2 2
Member1 Product3 12
Member2 Product8 8
Member1 Product1
33 +1

14. |-
Catalog Customization: Architecture
28/06/2018 Recommendation Systems at vente-privee12
Member
Aggregator
User interaction with article
: Cassandra

15. |-
Member Aggregator
28/06/2018 Recommendation Systems at vente-privee13
User interacts with article
Member
Adult
Woman
Adult
Man
Kid Girl Kid Boy
Member1 41
Member2
Member3
Member1 Product1
42 +1

16. |-
Catalog Customization: Architecture
28/06/2018 Recommendation Systems at vente-privee14
Popularity
Aggregator
User interaction with article
: Cassandra

17. |-
Popularity Aggregator
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User interacts with article
Product Popularity
Product1 353
Product2 56
Product3 280
Product1
354 +1

18. |-
Catalog Customization: Architecture
28/06/2018 Recommendation Systems at vente-privee16
Predict
Every 20mn
: Cassandra

19. |-
Predict Algorithm: Collaborative Filtering
28/06/2018 Recommendation Systems at vente-privee17
Product1 Product2 Product3 Product4
Member1 52 32 - -
Member2 - 45 - 3
Member3 1 - 66 -
Member4 104 - - 85
Product1 Product2 Product3 Product4
Member1 52 32 33 2
Member2 20 45 12 3
Member3 1 52 66 23
Member4 104 2 3 85

20. |-
Catalog Customization: Architecture
28/06/2018 Recommendation Systems at vente-privee18
Current
Operations
Every 15mn
: Cassandra

21. |-
Catalog Customization: Architecture
28/06/2018 Recommendation Systems at vente-privee18
User signs in
Recommendation
Aggregator
Recommendation
Aggregator
Every 15mn
: Cassandra

22. |-
Recommendation Aggregator
28/06/2018 Recommendation Systems at vente-privee19
Final Score
Popularity
Demography
Affinity
Score
Diversification
Final Ranking

23. |-
Catalog Customization: Architecture
28/06/2018 Recommendation Systems at vente-privee20
Recommendation
Aggregator
Final DB
: Cassandra

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What’s Next?

25. |-
Product Customization: Similar Products
28/06/2018 Recommendation Systems at vente-privee22
???

26. |-
Product Customization: Similar Products
28/06/2018 Recommendation Systems at vente-privee23

27. |-
What’s Next?
28/06/2018 Recommendation Systems at vente-privee24
Order Confirmation e-mail
Travel Customization
• Is this customer about to travel?
• Which destinations?

28. Thank you!
https://www.welcometothejungle.co/companies/vente-privee
@bettymoreschini
@vpTech #VPTech