- #1
bradyj7
- 122
- 0
Hi there,
I have a question about Bayesian probability.
I have a list of the starting times of journeys. I binned the data into 15 minute bins so I have 96 bins in total (4*24=96). So for example a journey start time of 08:05 am would be in bin number 29.
As an example here is the data for bins numbers 28-50 (8am until 12.30pm).
https://dl.dropbox.com/u/54057365/All/bin.JPG
I've calculate the frequency density of the bins in the last column.
Would anybody be able to tell me how I would do the following:
Taking Dirichlet prior distribution over the density of each bin for a multinomial model, you estimate the parameters. This way you get a non-zero probability for each bin. Each parameter is basically some prior parameter plus the frequency of the data in that bin.
Would anybody know if this can be done with an excel addin?
Appreciate your comments.
Regards
John
I have a question about Bayesian probability.
I have a list of the starting times of journeys. I binned the data into 15 minute bins so I have 96 bins in total (4*24=96). So for example a journey start time of 08:05 am would be in bin number 29.
As an example here is the data for bins numbers 28-50 (8am until 12.30pm).
https://dl.dropbox.com/u/54057365/All/bin.JPG
I've calculate the frequency density of the bins in the last column.
Would anybody be able to tell me how I would do the following:
Taking Dirichlet prior distribution over the density of each bin for a multinomial model, you estimate the parameters. This way you get a non-zero probability for each bin. Each parameter is basically some prior parameter plus the frequency of the data in that bin.
Would anybody know if this can be done with an excel addin?
Appreciate your comments.
Regards
John
Last edited by a moderator: