human adventure algorithms: a of recommended The manufacture · Director of Datascience - Deezer...
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The manufacture of recommended
algorithms: a human adventure
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Thomas [email protected] of Datascience - DeezerTeratec - 14/10/2020
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Resume
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Deezer: a streaming service
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The challenge of recommendation: create a user-centric experience
The goal:
● Help the users access to the right content in the catalog
● Create an affinity for the product● Be different● Create more value for the product
An example:
The flow: an unlimited personalised stream of music
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flow: a pipeline of different algorithms
Pool 1 Pool 2
Pool 3
TRACK POOLSTracks from different
origins: discovery, library...
TRACKLIST PATTERNAlternate between tracks of
different origins
LIVE ADAPTATIONSTracklists is updated according to
user’s interactions
FILTERS
- Remove banned tracks- Filter tracks with no rights- Filter tracks recently played
USER PROFILE
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Music representation for discovery
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Delivering in production
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A continuum from R&D to production
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User Needs
Issue
Prototype Production A/B TestThe very first version of our algorithm, for
internal use only.
Our algorithm has been A/B tested, approved, and is
released to all our users
There is always room for
improvement. We continue to AB test
to (in)validate hypothesis.
ReleaseWe implemented the
algorithm into the product, test it on a few
number of users and collect data
A process to test, learn and adapt quickly
We monitor every steps and iterate according to data
Monitoring
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Key takeaways
● User needs drive developments● A recommendation feature is always a tradeoff between
computer, machine learning, product or marketing constraints● Delivering quickly in production is the key
To achieve that:● The team works with small iterations ready for production● The organization and the technical stack is shaped according to
your goal● The team is autonomous and organizes itself: processes adapt to
humans, not the opposite
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Thank you