Re: Combining unbelievable information to make it believable! Can I use Matlab?
- From: "Ken Davis" <kendavis.nospam@xxxxxxxxxxxx>
- Date: Thu, 2 Feb 2006 09:55:59 -0500
"Matlab Newbie" <iwan2no@xxxxxxxxxxx> wrote in message
news:ef27859.-1@xxxxxxxxxxxxxxxxxxx
Hi,
Does anyone know how I could solve the following problem in Matlab?
Are there any built in functions?
Let's say person A checks his thermometer and sees that the soil
temperature in his backyard is say unusually high at 35C. Now the
chances of this happenning is very low as the mean is usually around
20C with say a standard deviation of 3C. So basically person A isn't
very sure if the reading he's getting is correct. The probability of
this occurring is around 0.00001.
Person A then goes over to his neighbours B, C and D.
Now B detects a temperature of around 29C which has a prob of 0.001.
Similarly C and D report probabilities of around 0.05 and 0.01
respectively.
The reason why C and D have higher probabilities than A and B is that
they're further away from the place where the unusual phenomenon
occurred and have thus recorded slightly lower temperatures.
Nevertheless, they're quite far off from the mean temperature.
Once A receives all the probabilities from B, C and D, then A can say
with fairly high level of confidence, that the unusually high
temperature did actually occur!
Now my question is, how would I calculate something like this.
Basically I would like A to draw a conclusion about the occurrence of
an event by combining the probabilities from multiple sources.
Are there any built in functions to do something like this in Matlab?
Cheers,
Matlab Newbie
Read your textbook. Do your homework. When you have a MATLAB question, feel
free to post it here.
.
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