4 ms·
It better not be a one-time precomputed step since the roads changes constantly. I'm pretty sure I've never tried to precompute placement of items in a dynamic
by protomyth 11y ago
It better not be a one-time precomputed step since the roads changes constantly. I'm pretty sure I've never tried to precompute placement of items in a dynamic system.
- lern_too_spel 11y agoNonsense. Roads change very rarely compared to the number of trips taken on them. This precompute needs to be done just once per change, just like building an index that will be used for many searches. The road changes themselves almost always happen in less inclement weather. This is pretty much exactly the same thing that humans do. I drive much better on a road with missing lane markings if I have driven on it before, and just like me, these systems will have degraded performance without the precompute.
- deleted 11y ago[deleted]
- manicdee 11y agoOn the other hand, I have been confused by fairly simple changes to roads such as a two way street being made one-way (which a decent satnav would have been updated to know about as soon as the change was gazettes) or roadworks closing off a road that i regularly use (again, autonomous system would have been updared based on gazetted road closures).