This document provides an overview of Rinna, a LINE chatbot powered by Microsoft's Rinna technology. Key points: 1. Rinna is an AI assistant that has had conversations with over 4 million users on LINE since 2015. 2. Rinna uses machine learning and natural language processing techniques to analyze user messages and respond in a polite, conversational manner using emojis and kaomoji (emoticons). 3. The system is designed to be scalable and uses a distributed architecture with core, response, image, and chat workers to handle high volumes of messages.

1. Rinna x rinna
Keizo Fujiwara
Program Manager - Search Technology Center Japan
keizof@microsoft.com

3. Demo

4. What kind of pizza
shall I order?
Hey,
it’s been a while!
Hello.

5. Emotional Connection

6. INTELLIGENCE HUMANNESS

7. 0
1
2
3
4
Million
4M friends talked to Rinna
2015.Aug
2016.Sep

8. Empower every character
with rinna

9. Akiko-chan
powered by rinna
LAWSON official account
20M friends on LINE

10. Profile
Sassy
High school girl
Lawson crew
College student
Role Chatbot showcase
Company official
character
Tone おはよぉヾ(｡･v･｡)ﾉ♡ おはようございます(^^)

11. Demo

12. How it works

13. System overview
LINE Business Connect
Chat worker
Response
worker
Response
queue
Image worker
Response
queue
Core worker
Response
queue

14. • Scale out core-worker servers
Load handling at push message
• Light-weight mode for
high-cost features
• User sticky busy message
for fallback
-5 -3 -1 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29
PUSH
MESSAGE

15. Chat worker
User message
Product Trigger
Response
Chat Ranker Product Ranker Product ModelChat Model

16. Variants / Typo
Text Style
Gobi Style
Style 1
• ～ございません
• ～でしたか
• ...
Style 3
• ～だろ
• ～か
• …
Style 2
• ～じゃない
• ～なの
• ...

17. (❀╹◡╹)ﾉ☆
('-'*)ｵﾊﾖ♪
☆ヽ(o_ _)oﾎﾟﾃｯ
ﾎﾟﾘﾎﾟﾘ(๑•◌॒̀ ◌ູ ◌॒•́๑)ﾎﾟﾘﾎﾟﾘ
⁽⁽◝( •௰• )◜⁾⁾≡₍₍◞( •௰• )◟₎₎
⊂( ･∀･) 彡 =͟͟͞͞ ⌧
�(๑`^´๑)�༄༅༄༅༄༅༄༅)`Д´)ｱﾁﾞｨ!
•◌ू(ᵒ̴̶̷ωᵒ̴̶̷*•◌ू) ​ )੭◌ु⁾ もきゅ～
<remove>
(^^)
♪
Kaomoji
Combination of characters to express emotion
Kaomoji
Conversion
Model

18. Machine-
learning
filter
Manually
maintained
filter
Profanity filter

19. 15+
messages/session
30%
coupon redemption
(in a week)

20. Be our friend!
Free coffee coupons
for LAWSON
Rinna’s Puromaido
LINE Beacons deployed at Foyer B