My Talk on AWS Community Day Bangalore (28-OCT-2017). Building Digital Assistant (voice bot) with Lex and Lambda

1. AWS Community Day,
Bangalore -2017
BUILDING DIGITAL ASSISTANT (VOICE BOT) WITH LEX AND LAMBDA
PUBLIC
ILANCHEZHIAN GANESAMURTHY
ISO 9001:2008
ISO/IEC 27001:2013
CMMI ML 5
PCMM ML 5
PCI DSS V 3.1

2. Agenda
•Conversational Interfaces
•Lex : Introduction
•Lex : Voice - End-2-End Flow
•Lex : Bot Structure
•Steps in building Voice Bot

3. 3
Ilanchezhian Ganesamurthy
(Ilan)
• 18 Years of Software Development
• AWS Solution Architect
• Working with EVRY India – Digital Innovation
Labs
• Currently working on Cloud, Cloud-Native &
Cognitive technologies
ilan.ganesamurthy@gmail.com / ilan_g
EVRY India
Cloud Solution Architect
EVRY
• Revenue $1.5 bn
• Global spread: 10 countries & 8500 employees
worldwide
• #1 Financial Services in Nordics
• Leading IT services in Nordics
• Creating Digital Advantage to Tomorrow’s Leader
Digital Innovation Lab:
Cloud, Cognitive, ML/AI,
RPA, Customer
Experience &
Operational Excellence,
Digital Security and IoT
Focused Domain:
Banking & Finance
Insurance
Healthcare
Retail & Logistics
Energy & Utilities
Product Engineering
Services

4. SOURCE: HTTPS://WWW.GARTNER.COM/SMARTERWITHGARTNER/GARTNER-PREDICTS-A-VIRTUAL-WORLD-OF-EXPONENTIAL-CHANGE/4
Why Conversational User Interface –
Gartner Predictions
By 2020, customers will manage 85% of their relationship with the enterprise
without interacting with a human
By 2020, 30% of web browsing sessions will be done without a screen
By 2020, the average person will have more conversations with bots than
with their spouse

5. Credit : AWS Presentation5
User Interfaces - Evolution
1st Gen:
Punch Card, Memory
Register, CLI
2nd Gen:
Pointers &
Sliders
3rd Gen:
Touch Screen
4th Gen:
Conversational
Interface

6. 6
Conversational Interfaces – Developer Challenges
Speech
Recognition
Natural
Language
Understanding
Business
Logic &
Testing
Natural
Language
Generation
Interface with
multiple
Systems
Scale &
Availability
Messaging
Platforms

7. Credit : AWS Presentation7

8. 8
Lex : Voice Chat Bot - End-2-End Flow
Intent Response
(Text)
Validation &
Business
LogicLex
Automatic
Speech
Recognition
(ASR)
Speech
Natural
Language
Understanding
(NLU)
IntentText
Lex
Response
(Text)
TextToSpeech
(Speech Synthesis)
PollyLex

9. 9
Voice Chat Bot : End-2-End Flow – Continued..
Build
Improve
CHANNELS CONVERSATION
SYSTEM
FULFILLMENT

10. Credit : AWS Documentation10
Lex Bot Structure
Bot > Intents (Many) > Utterances (Wake Up Word) > Slots (Entity or Variable) > Fulfillment (Code)

11. 11
Utterances > Slot > Prompt
Utterances
• I Like to book hotel
• Please make
Reservation
• Book Hotel in Bangalore
Slot Slot Elicitation
(Prompt)
• What City you want to
Book?
• What Date do you
check-in?
Slot SlotType Value
Destination City
CustomDatatype:
Bangalore,Chennai,NewYork
CheckIn Date <In-build Datatype>
CheckOut Date <In-build Datatype>

12. DEMO

13. 13
IDA Workflow
AWS cloud
Amazon
Cognito IAM Amazon Lex Amazon
Lambda
function
mobile client
Amazon API
Gateway
Amazon
Lambda
function
Amazon
DynamoDB
Amazon
Polly
Third Party
System

14. 14
Utterances > Slot > Prompt

15. Credit : AWS Documentation15
Recap

16. 16
Resources • https://aws.amazon.com/blogs/ai/building-better-bots/
• https://aws.amazon.com/blogs/ai/building-better-bots-part-2/
• Step-by-step instructions to build Bot (From AWS)
o https://github.com/awslabs/amz-ai-building-better-bots