| 摘要 |
The invention includes a cohort analysis (step 6) as an element of an in-vehicle navigation system An operator makes trips from and origin to a destination, the navigation system records various route segments chosen (step 3) These choices are compared to route segments comprising a minimal time route calculated for the trip (step 4) Segments not part of the prescribed route are collected and periodically sent along with the origin and destination to a centralized server (150) where they are stored in a database (153)
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