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Messages - lesbaert

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1
Pathfinder / Re: Behavior - Initial Delay - Log Normal distribution
« on: October 14, 2016, 02:25:31 am »
Thanks for the test with a large number of occupants. It shows that the log-normal distribution of the initial delay is functioning properly.

Like suggested, it would be convenient for the reader of the manual to include the definition of the parameters. From your worked example, I have understood that "Avg" and "Std. Dev." correspond to the mean and standard deviation of the non-logarithmized samples. While a log-normal function is normally defined in literature with location parameter "mu" and scale parameter "sigma" on a logarithmic scale. For the example "Avg"=5 and "Std. Dev."=3, this would result in "mu"=1.46 and "sigma"=0.55.
 
 



2
Pathfinder / Behavior - Initial Delay - Log Normal distribution
« on: September 28, 2016, 12:52:45 pm »
Hi,

the user manual does not provide information on the definition of the statistical parameters used in the Log Normal distribution used for the 'Initial Delay' behavior.

What is the field 'Avg' and 'Std. Dev' standing for? After some testing, it seems that the Log Normal distribution reacts as a Normal distribution.

A log normal distribution of a stochastic variable is defined with mu and sigma. https://en.wikipedia.org/wiki/Log-normal_distribution

E.g.: for mu=5, and sigma=1 => median value=148s, and value with highest probability is about 60s.

Thanks

3
Pathfinder / Assisted evacuation - wheelchairs
« on: September 26, 2016, 06:55:32 am »
Hi,

I'm working on a model of a new high rise building accommodating a healthcare facility for ambulant therapeutic treatment of people with physical disabilities.
Any suggestions to define properly the profile for assisted evacuation of people in wheelchairs or assisted evacuation of people with crutches?

Thx
Les

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