|
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
idea.
Regards Digby
----- Original Message -----
Sent: Thursday, April 14, 2005 4:40
PM
Subject: [ai-geostats] How can I measure
the difference between 2 models?
Hello everyone,
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
grade
distribution, although this analysis is popular and
common.
For instance, please see below figure.
Standard
model(A)
************
*
55 90
*
*
*
*
*
* 10 45
*
************
Simulated model(B)
************
*
90 45
*
*
*
*
*
* 55 10
*
************
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.
Thanks
Best
regards,
Lee Sung Soo
Master student(University of
WA)
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