optimization
Class Fmin
java.lang.Object
optimization.Fmin
public class Fmin
- extends java.lang.Object
This class was translated by a statistician from the FORTRAN
version of fmin. It is NOT an official translation. When
public domain Java optimization routines become available
from professional numerical analysts, then THE CODE PRODUCED
BY THE NUMERICAL ANALYSTS SHOULD BE USED.
Meanwhile, if you have suggestions for improving this
code, please contact Steve Verrill at steve@ws13.fpl.fs.fed.us.
Constructor Summary |
Fmin()
|
Method Summary |
static double |
fmin(double a,
double b,
Fmin_methods minclass,
double tol)
This method performs a 1-dimensional minimization. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Fmin
public Fmin()
fmin
public static double fmin(double a,
double b,
Fmin_methods minclass,
double tol)
This method performs a 1-dimensional minimization.
It implements Brent's method which combines a golden-section
search and parabolic interpolation. The introductory comments from
the FORTRAN version are provided below.
This method is a translation from FORTRAN to Java of the Netlib
function fmin. In the Netlib listing no author is given.
Translated by Steve Verrill, March 24, 1998.
- Parameters:
a
- Left endpoint of initial intervalb
- Right endpoint of initial intervalminclass
- A class that defines a method, f_to_minimize,
to minimize. The class must implement
the Fmin_methods interface (see the definition
in Fmin_methods.java). See FminTest.java
for an example of such a class.
f_to_minimize must have one
double valued argument.tol
- Desired length of the interval in which
the minimum will be determined to lie
(This should be greater than, roughly, 3.0e-8.)