RE: [ai-geostats] How can I measure the difference between 2 models?
Here s a slightly different question: It is standard practice to test for significant differences in the parameter coefficient estimates to determine
Message 1 of 4
, Apr 20, 2005
Here’s a slightly different question:
It is standard practice to test for significant differences in the parameter
coefficient estimates to determine “difference” between alternative
Thus, if one or more of the coefficients are
significantly different, then the models are deemed different.
This question arises from wanting to test
for changes in spatial and/or temporal patterns in image time series.
Geoffrey M. Henebry, Ph.D., C.S.E.
Collaboratory for Ecological Remote Sensing, Modeling, and Analysis (CERSMA)
Center for Advanced Land Management Information Technologies (CALMIT)
School of Natural Resources
University of Nebraska-Lincoln
102 E. Nebraska Hall
Lincoln, NE 68588-0517 USA
voice: 402-472-6158 (-4608 fax)
email: ghenebry@... http://calmit.unl.edu/cersma/
From: Digby Millikan
[mailto:digbym@...] Sent: Wednesday, April 20, 2005
2:48 AM To: ai-geostats; Lee Sung Soo Subject: Re: [ai-geostats] How can
I measure the difference between 2 models?
Is you model 2 or 3 dimensional what about a map of the errors?
Also general statisitics
of the populations, e.g. varaiance, coefficient of variation etc. Grade
tonnage plot is a good
Subject: [ai-geostats] How
can I measure the difference between 2 models?
I apologize if this question is too elementary for this list;
The problem is how to quantify and represent the difference between
standard model and simulated model. I tried to use a tonnage and
grade mean value difference by cut-off grade in order to compare
and quantify some risks between models.
But I think there are some limitations to express the variations related to the
distribution, although this analysis is popular and common.
The mean values of two block models show exact same and look very
similar. But the grade distribution is pretty different.
To express the difference and variabilities, some more various ways
are required. How can I measure the difference between 2 models.
Would you give me a advice or ways about quantifying the difference
between two models. And if available, would you introduce me
reference papers or internet site.
Lee Sung Soo
Master student(University of WA)
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