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Galaxy Zoo:  Citizen science on Rails
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Galaxy Zoo: Citizen science on Rails

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Slides from ActiveResearch meeting at RailsConf '09

Slides from ActiveResearch meeting at RailsConf '09

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Galaxy Zoo:  Citizen science on Rails Galaxy Zoo: Citizen science on Rails Presentation Transcript

  • Galaxy Zoo Citizen Science on Rails Arfon Smith
  • Citizen science?
  • :-(
  • :-)
  • 700,000 Images
  • 20,000 Users
  • 40,000,000 Inspections
  • Awesome
  • Astronomy?
  • 100 80 60 40 20 0 Professor
  • 10,000 7,500 5,000 2,500 0 Professor Paper
  • 50,000 37,500 25,000 12,500 0 Professor Paper PhD
  • 1,000,000 750,000 500,000 250,000 0 Professor Paper PhD SDSS
  • 70,000 60,000 Classifications per hour 1 50,000 Kevin weeks 40,000 30,000 20,000 Fukugita et al. 2007 10,000 0 0 6 12 18 24 30 36 42 48 Hours
  • 1,000,000 Galaxies
  • 170,000 Users
  • 70,000,000 Classifications
  • 70,000,000 Does it work? Classifications
  • You bet
  • Clean Super Clean
  • Clean Super Clean
  • Clean Super Clean
  • better than the professionals
  • 1. Collaborators not users 2. Contribute to real research 3. Don’t waste people’s time
  • Land K., et al., 2008, Galaxy Zoo: The large-scale spin statistics of spiral galaxies in the Sloan Digital Sky Survey Lintott C.J., et al., 2008, Galaxy Zoo: Morphologies derived from visual inspection of galaxies from the Sloan Digital Sky Survey Bamford S.P., et al., 2008, Galaxy Zoo: the dependence of morphology and colour on environment Slosar A., et al., 2008, Galaxy Zoo: Chiral correlation function of galaxy spins Schawinski K. et al. 2009, Galaxy Zoo : A sample of blue early-type galaxies at low redshift
  • 250,000 Galaxies
  • 225,000 Users
  • 28,000,000 Classifications
  • 70,000,000 What ’s next? Classifications
  • 1 #
  • Contribution to research
  • Galaxy Zoo Database
  • Galaxy Zoo Crow Zoo Moon Zoo Papyrus Zoo Database Database Database Database
  • Task Project Annotation User Asset Answer
  • Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7 Question 8 Question 9
  • HAProxy Web Web Web HAProxy API API MySQL Master MySQL Slave MySQL Slave
  • Questions?