Pathfinder Verification and Validation www.thunderheadeng.com - - PowerPoint PPT Presentation

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Pathfinder Verification and Validation www.thunderheadeng.com - - PowerPoint PPT Presentation

Dec 20, 2023 420 likes •867 views

Pathfinder Verification and Validation www.thunderheadeng.com Quality Assurance Process Source Code Control Continuous Integration Entire system rebuilt after every change Automated Testing Tests run automatically after every

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Pathfinder Verification and Validation

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Quality Assurance Process

  • Source Code Control
  • Continuous Integration

– Entire system rebuilt after every change

  • Automated Testing

– Tests run automatically after every build – 117 test cases in 2012 – 308 test cases in 2014

  • Testing Dashboard
  • Automated Error Reporting

– Reports categorized and scheduled weekly

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Source Control

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Automated Tests - Dashboard

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Verification and Validation Guide

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Error Handling

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Verification Tests

  • IMO
  • RIMEA
  • NIST Tech Note 1822
  • SFPE Handbook
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Verification Tests

  • Locomotion
  • Wayfinding
  • Behavior
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How do we apply this to development?

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Problems of Forensic Sciences 2012, vol. 91 Jakub Zębala, Piotr Ciępka, Adam Reza Institute of Forensic Research, Kraków, Poland

Pedestrian Acceleration

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Walking Sprinting

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y = 0.9587x + 0.0317

  • 6.00E+00
  • 4.00E+00
  • 2.00E+00

0.00E+00 2.00E+00 4.00E+00 6.00E+00 8.00E+00 1.00E+01

  • 0.2

0.2 0.4 0.6 0.8 1 1.2

  • 0.2

0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 Position Velocity Acceleration Linear (Velocity)

Acceleration to Ordinary Walking, Lower Bound

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Hallway Experiment

D1 D2

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Hallway Results

D1 D2 t v a a/v t_accel Richard1 4.24 3.55 7.79 1.3 0.9 0.7 1.4 Richard2 4.25 3.63 7.88 1.3 1.0 0.8 1.2 Richard3 4.4 3.9 8.3 1.2 1.2 1.0 1.0 Jon1 3.81 3.61 7.42 1.3 3.2 2.5 0.4 Jon2 4.11 3.55 7.66 1.3 1.1 0.9 1.1 Brian1 3.45 3.35 6.8 1.4 6.8 5.0 0.2 Brian2 3.67 3.11 6.78 1.5 1.3 0.9 1.1 Brian3 3.23 3.13 6.36 1.5 7.3 5.0 0.2 Charlie1 4.2 3.74 7.94 1.2 1.3 1.1 0.9 Charlie2 4.38 3.81 8.19 1.2 1.1 0.9 1.1 Joe 3.97 3.7 7.67 1.2 2.3 1.9 0.5 Dan1 3.83 3.25 7.08 1.4 1.2 0.9 1.2 Dan2 3.82 3.07 6.89 1.5 1.0 0.7 1.5 Average 2.3 1.7 0.9

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Flow vs. Acceleration

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Agent Acceleration

  • Changed default value
  • Exposed parameter for user input
  • Re-run verification problems
  • Update tests with new results
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Improving Locally-Quickest Door Choice

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Proposed Solution

  • Use actual door flowrates to estimate queue

wait times

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Measuring Flowrate

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Moving Average

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Low-Pass Filter

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Low-Pass Filter

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Low-Pass Filter

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Door Choice Improvements

  • Use actual flowrate to calculate local queue

time

  • Optimal flow used if no queue formed
  • Re-run verification problems
  • Update tests with new results
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Thank You

Questions?