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Project:Spacensus: Difference between revisions

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==FAQ==
==FAQ==


Q: This will probably get caught out by clusters of people: --[[81.105.17.61]]
'''Q:''' This will probably get caught out by clusters of people: --[[81.105.17.61]]


A:
'''A:'''
* We only need an approximate count
* We only need an approximate count
* The doorway is narrow so it's unlikely that the steps of more than one individual will overlap.
* The doorway is narrow so it's unlikely that the steps of more than one individual will overlap.
* Most of the time people won't arrive in clusters
* Most of the time people won't arrive in clusters


Q: Can we detect some other event such as the door opening after a prolonged lights-out period to force the count to zero? --[[81.105.17.61]]
'''Q:''' Can we detect some other event such as the door opening after a prolonged lights-out period to force the count to zero? --[[81.105.17.61]]


A:
'''A:'''
* Yes, using the door/lights data for reset would be good if  we get large amounts of drift - but I don't plan to just yet
* Yes, using the door/lights data for reset would be good if  we get large amounts of drift - but I don't plan to just yet
* This might fail if people spend the night there.  AIUI this happens rarely enough that we may not care about the inaccuracy.
* This might fail if people spend the night there.  AIUI this happens rarely enough that we may not care about the inaccuracy.
* We could also use some kind of probabilistic model with the 'door-open' and 'bell' data
* We could also use some kind of probabilistic model with the 'door-open' and 'bell' data
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