Running Natural Language Queries on MongoDB

Deepak Krishnan | Consultant - Data Scientist❏ Expert on various Big Data and Machine Learning initiatives ❏ Experienced in schema design for Big Data storage systems

Praveen Rajasekhar | Director - Business Development❏ <bio to be updated>❏ <bio to be updated>

Speakers

Agenda

❏ Problem Statement

❏ Solution

❏ Summary

❏ Questions?

Problem Statement

User Experience

User Engagement

Search

Solution

Solution

Solution

❏ Identify key operands & operators within natural language query

❏ Convert them into a series of connected expressions

❏ Dynamically build a query which runs against MongoDB instance

❏ Aggregate search results

[Revised]

Solution

[Revised]

Example:

Tokenizer

❏ Acts an FSA to access inverted index

❏ Emits annotations whenever a buffer matches an operator

❏ Ability to identify common data types such as date, time etc.

❏ Emits the matched expressions as a sequential stream of

annotations

[Revised]

Tokenizer

Expression Parser

❏ Generated using parser generator

❏ Supports conjunction, disjunction, negation operators

❏ Responsible for taking in a stream of annotations and reducing it

❏ Creates the equivalent MongoDB query during reduction process

[Revised]

Expression Parser

Example: Show me Java or PHP openings

This will be reduced by

EXPR OR_OPERATOR EXPR

which has an RHS that will convert this to an OR query in MongoDB

External Knowledge Bases

❏ Integrated into the expression parser for data intelligence

❏ The application uses NLP date parsers, ConceptNet (knowledge

bases)

❏ Improved data intelligence

[Revised]

Summary

Search API❏ Acts as natural language quering modules

❏ Acts as a RESTful API endpoint to which clients can connect to via

HTTP

Tokenizer❏ Passes the stream of tokens to an expression parser

Summary

[Revised]

Expression Parser❏ Uses series of tokens to make transitions in a finite state machine❏ Ingestion of the tokens into the expression parser is based on a

sliding window model where the window size is dynamic

Summary

[Revised]

MongoDB Expertise at QBurst

MongoDB Expertise at QBurst

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❏ Design & Implementation

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Questions?

Thank You

Email: [email protected]

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