3 ms·
All of the readings are skewed by air conditioned buildings.
by D9u 13y ago
All of the readings are skewed by air conditioned buildings.
- ctdonath 13y agoI'm surprised (or overlooked) there wasn't a check for clustering of data. One set should clump close (with 24/7 consistency) to normal indoor temperature, while another should clump (with greater spread and time-of-day variation) around actual outdoor temperature. Split the discernibly HVAC-skewed values out, and you'll get a better grasp on the actual outdoor temperature. You could then sub-split the latter into warm-body proximity clustering (phones in pocket vs. otherwise).
- VLM 13y agoThe ratio of the two clusters answers questions like "how much more popular is baseball opening day this year" or whatever.
- VLM 13y agoMight be an interesting way to track brownouts / power outages / restoral of services.
- 205guy 13y agoMy guess is that's accounted for in each city by the m and k values. Note that these values are essentially averaging the battery-temp-affecting behavior of everybody in a given location (as well as the local temperature variations as well) and mapping them to the "official" temperature (usually measured at the airport). That makes the whole exercise rather useless in my opinion: it doesn't provide more information than a weather report, just a vague redundancy. Significantly, they will never be able to isolate all the factors so that a single phone can tell you the local air temperature. As Dylan famously said: "You don't need a weatherman to know which way the wind blows."[1] [1] http://en.wikipedia.org/wiki/Subterranean_Homesick_Blues http://en.wikipedia.org/wiki/Subterranean_Homesick_Blues