The volume of traffic at each gate matters as well. Small variations in
time will produce greater statistical variability if the traffic level
is low. Higher volume gates have less variability from second to
second, even though the total counts will of course be different. High
volume gates have lower statistical error than low volume gates, in
other words.
Best,
Noah
-----Original Message-----
From: Alan Penn
Sent: 09 March 2005 12:38
To: [log in to unmask]
Subject: Re: Publically available standard test cases
Absolutely right Rui - all observers should have a watch.
Alan
Rui said:
>
> I was one of the people who did these 'observations'.
>
> We were told nothing on methodology -how do you count people over 5
> minutes?
>
>
> My counts had an error of about 18%, depending on whether you count
> for 5 minutes or 5 min 20 s (10 secs at beg & 10 sec at end). You can
> fit almost anything you like to data with such high errors.
>
> Rui
>
> > -----Original Message-----
> > From: [log in to unmask] [mailto:[log in to unmask]]
> > On Behalf Of Nick Dalton
> > Sent: 09 March 2005 11:04
> > To: [log in to unmask]
> > Subject: Re: Publically available standard test cases
> >
> >
> > Don't forget the open observation exercise I held at the last space
> > syntax conference.
> >
> > You can pick up the observation results at.
> > http://www.thepurehands.org/massObs/
> >
> > more standard test sights and more standard observation information
> would
> be
> > very useful.
> >
> > sheep
> >
> >
> >
> > >For the Gassin maps on the VR website, I have actually spent a
> > >couple
> of
> > >minutes to ask Julienne Hanson (who drew the maps) and CUP (who
> > >published them) for permission to publish the digitised diagrams.
> > >Both were happy for the maps to remain up for academic purposes.
> > >
> > >I hope this serves to encourage the use of a standard set of test
> > >cases for space syntax. However, I would still like to see some
> > >observation data made available. For example, within the
> > >artificial intelligence community, the Anderson (1935) iris data
> > >has become a standard that is freely distributed to test
> > >classification algorithms.
> > >
> > >Alasdair
> > >
> > >Rui Carvalho wrote:
> > >
> > >>On Thu, 3 Mar 2005 11:15:53 +0000, Alasdair Turner
> <[log in to unmask]>
> > >>wrote:
> > >>
> > >>>On vector maps: the maps on
> > >>>http://www.vr.ucl.ac.uk/research/axial
> are
> > >>>high definition vectorised versions of the maps in the Social
> > >>>Logic
> of
> > >>>Space. For Rui -- I am not sure whether these are supposed to be
> open
> > >>>access or not given the copyright of Social Logic of Space rests
> > >>>with CUP. (Also, sorry Bin, they don't include fig 25.)
> > >>>
> > >>
> > >>
> > >>Well, of course the copyright of those images rests with CUP.
> > >>Strictly speaking, it seems that the VR centre is violating CUP's
> > >>copyright by not stating that clearly -just joking!
> > >>
> > >>My point is that it is your job to negotiate with CUP to make
> > >>these
> images
> > >>open access. The readers should be spared the red tape.
> > >>
> > >>Rui
> > >>
> > >>
> > >>>Alasdair
> > >>>
> > >>
> > >>
> > >>
> > >
> > >--
> > >Alasdair Turner
> > >Lecturer in Architectural Computing
> > >Bartlett School of Graduate Studies
> > >UCL Gower Street LONDON WC1E 6BT
> > >
> > >Course Director: MSc Virtual Environments
> > >MSc Adaptive Architecture and Computation
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