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Showing posts from November, 2011

Uber's Michelangelo vs. Netflix's Metaflow

  Uber's Michelangelo vs. Netflix's Metaflow Michelangelo Pain point Without michelangelo, each team at uber that uses ML (that’s all of them - every interaction with the ride or eats app involves ML) would need to build their own data pipelines, feature stores, training clusters, model storage, etc.  It would take each team copious amounts of time to maintain and improve their systems, and common patterns/best practices would be hard to learn.  In addition, the highest priority use cases (business critical, e.g. rider/driver matching) would themselves need to ensure they have enough compute/storage/engineering resources to operate (outages, scale peaks, etc.), which would results in organizational complexity and constant prioritization battles between managers/directors/etc. Solution Michelangelo provides a single platform that makes the most common and most business critical ML use cases simple and intuitive for builders to use, while still allowing self-serve extensibi...

Rails on heroku

Just found out that the new Rails 3.1.3 can be deployed to heroku using 'heroku create --stack cedar' instead of 'heroku create'.  By doing this, the only thing you have to change in the Gemfile is delete the line 'gem sqlite3' and add the following: group :development, :test do   gem 'sqlite3' end group :production do   gem 'pg' end then commit and push to heroku.

Deploying a Rails 3.1.1 app to heroku using Ruby 1.9.3 and Ubuntu 11.10

Hello friends. :P I (FINALLY) got a Rails app working on heroku!  But it took some doing - even the basic template rails app wouldn't work on heroku!  And the getting started walkthrough on the heroku website didn't tell me what to do about the errors.  I'm still not sure if it's my OS that makes this trickier than advertised, or if it's the version of Ruby or Rails that I'm using...or maybe it's heroku's problem?  Oh well.  But here's my setup, and if you've got the same then this tutorial should work for you.  This tutorial assumes you've already setup your heroku account. Operating System: Ubuntu 11.10 Ruby version : 1.9.3p0 Rails version : 3.1.1 Source control : Git  First off, if you haven't already, generate a stock app, and enter its directory : >rails new my_app >cd my_app Next, initialize a new Git repository, and add everything to it : >git init >git add . >git commit -am "Initial co...