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MasonJiang_SaFeRack_demo_final

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Presentation for my Insight Project, SaFeRack (saferack.space)

Published in: Data & Analytics
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MasonJiang_SaFeRack_demo_final

  1. 1. Mason Jiang, Insight DS 2016A
  2. 2. THE PROBLEM SaFe Rack Finding parking for your bike in San Francisco  Proximity  Safety
  3. 3. THE SOLUTION www.saferack.space SaFe Rack
  4. 4. HOW IS THIS DONE? Destination Max Walking Distance Bike Safety vs. Proximity PreferenceArrival Time USER INPUTS SaFe Rack
  5. 5. Destination Arrival Time USER INPUTS 5 PM SaFe Rack HOW IS THIS DONE?
  6. 6. Destination Arrival Time USER INPUTS 10,282 bike theft incidents (2003 − 2015) 5 PM SaFe Rack HOW IS THIS DONE?
  7. 7. Destination Arrival Time USER INPUTS 5 PM Kernel Density Estimation (KDE), weighted by recency of crime P (X,Y) SaFe Rack HOW IS THIS DONE?
  8. 8. Destination Max Walking Distance Arrival Time USER INPUTS 5 PM P (X,Y) 1,842 bike racks citywide Local Risk Score (1 to 100) SaFe Rack HOW IS THIS DONE?
  9. 9. Destination Max Walking Distance Bike Safety vs. Proximity PreferenceArrival Time USER INPUTS 5 PM P (X,Y) Rack recommended from weighted average safety proximity SaFe Rack HOW IS THIS DONE?
  10. 10. safety proximity SaFe Rack ACHIEVING A BALANCE
  11. 11. ACHIEVING A BALANCE safety proximity SaFe Rack Testing on 100 SF addresses… SAFEST RACK Avg. Distance 0.36 miles Avg. Risk Score 34 / 100 CLOSEST RACK Avg. Distance 0.03 miles Avg. Risk Score 68 / 100 50% drop in risk score, but with 0.33 miles extra walking
  12. 12. ACHIEVING A BALANCE safety proximity SaFe Rack Testing on 100 SF addresses… SAFEST RACK Avg. Distance 0.36 miles Avg. Risk Score 34 / 100 CLOSEST RACK Avg. Distance 0.03 miles Avg. Risk Score 68 / 100 CHOSEN RACK Avg. Distance 0.22 miles Avg. Risk Score 39 / 100 43% drop in risk score with only 0.19 miles extra walking 50% drop in risk score, but with 0.33 miles extra walking
  13. 13. KDE Map (2003 to 2005) SHIFTS IN BIKE CRIME Marina, Russian Hill, Fisherman’s Wharf Tenderloin / SOMA Districts ✧  Regions of dense bike theft activity shift over the years SaFe Rack
  14. 14. KDE Map (2013 to 2015) Mission District ✧  Regions of dense bike theft activity shift over the years SaFe Rack Tenderloin / SOMA Districts SHIFTS IN BIKE CRIME
  15. 15. KDE Map (2013 to 2015) Mission District ✧  Regions of dense bike theft activity shift over the years SaFe Rack Tenderloin / SOMA Districts SHIFTS IN BIKE CRIME
  16. 16. MASON JIANG Ph.D. in Physics, Stanford University B.S. in Applied Physics, Columbia University LCLS X-ray Laser (SLAC National Accelerator Laboratory, Menlo Park, CA) Half Dome Basketball
  17. 17. ✧  Number of bike theft incidents reported varies with time of day SaFe Rack EXTRA GRAPHS (Arrival Time)
  18. 18. SaFe Rack EXTRA GRAPHS (Arrival Time)
  19. 19. EXTRA GRAPHS (Bike Crime KDE vs. Bike Rack KDE) SaFe Rack
  20. 20. SaFe Rack EXTRA GRAPHS (Bike Crime KDE vs. Bike Rack KDE)
  21. 21. SaFe Rack EXTRA GRAPHS (Bike Crime KDE vs. Bike Rack KDE) Bike Crime KDE Bike Rack KDE 399 Golden Gate Ave, San Francisco, CA 94102
  22. 22. SaFe Rack EXTRA GRAPHS (Bike Crime KDE vs. Bike Rack KDE) Bike Crime KDE Bike Rack KDE 865 Market St, San Francisco, CA 94103
  23. 23. SaFe Rack EXTRA GRAPHS (Bike Crime KDE vs. Bike Rack KDE) Bike Crime KDE Bike Rack KDE 547 Haight St, San Francisco, CA 94117
  24. 24. EXTRA GRAPHS (Transformation of KDE values) SaFe Rack
  25. 25. EXTRA GRAPHS (Transformation of KDE values) SaFe Rack
  26. 26. EXTRA GRAPHS (Bandwidth Selection) SaFe Rack
  27. 27. saferack.space (front page)
  28. 28. saferack.space (output)
  29. 29. saferack.space (chosen rack)
  30. 30. saferack.space (other racks)
  31. 31. saferack.space (crimes)
  32. 32. CHOSEN RACK SaFe Rack
  33. 33. CHOSEN RACK SaFe Rack
  34. 34. CHOSEN RACK SaFe Rack

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