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Finding Responsibility

Talkat RubyConf 2017 · 2017-11-15..11-17· [security]
slides:none on file

A Wi‑Fi geolocation app reconstructs every nearby hotspot in 3D space using a convolution of an R‑squared distance model and a Gaussian estimator, then optimizes three hardcoded constants with a genetic algorithm that drops error from about 45 feet to 10.3 feet; nested loops and repeated great‑circle calculations are memoized to speed up from seven minutes to a few seconds; a Kalman filter adds position/velocity/acceleration tracking and attempts at promiscuous‑mode phone sniffing reveal the end use: locating people for DoD operations.

AI-written summary · about

  1. 0:00Start
  2. 4:17Gaussian Estimation
  3. 8:25What a Genetic Algorithm Is
  4. 8:51Fitness Function
  5. 10:18Overfitting
  6. 10:53Tracking a Moving Wi-Fi Access Point
  7. 12:48Promiscuous Mode
  8. 22:36Ethics and Morals
  9. 29:32Chelsea Manning
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