文件名称:codings
- 所属分类：
- 软件工程
- 资源属性：
- [Matlab] [源码]
- 上传时间：
- 2015-08-10
- 文件大小：
- 42kb
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- 0次
- 提 供 者：
- sharmila*********
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codings for layer Program 13.1 Golden Section Search for minimum of f(x)
Start with unimodal f(x) and minimum in [a,b]
Input: inline function f, interval [a,b], number of steps k
Output: approximate minimum y
function y=gss(f,a,b,k)
g=(sqrt(5)-1)/2
x1 = a+(1-g)*(b-a)
x2 = a+g*(b-a)
f1=f(x1) f2=f(x2)
for i=1:k
if f1 < f2 if f(x1) < f(x2), replace b with x2
b=x2 x2=x1 x1=a+(1-g)*(b-a)
f2=f1 f1=f(x1) single function uation
else otherwise, replace a with x1
a=x1 x1=x2 x2=a+g*(b-a)
f1=f2 f2=f(x2) single function uation
end
end
y=(a+b)/2 -codings for layer Program 13.1 Golden Section Search for minimum of f(x)
Start with unimodal f(x) and minimum in [a,b]
Input: inline function f, interval [a,b], number of steps k
Output: approximate minimum y
function y=gss(f,a,b,k)
g=(sqrt(5)-1)/2
x1 = a+(1-g)*(b-a)
x2 = a+g*(b-a)
f1=f(x1) f2=f(x2)
for i=1:k
if f1 < f2 if f(x1) < f(x2), replace b with x2
b=x2 x2=x1 x1=a+(1-g)*(b-a)
f2=f1 f1=f(x1) single function uation
else otherwise, replace a with x1
a=x1 x1=x2 x2=a+g*(b-a)
f1=f2 f2=f(x2) single function uation
end
end
y=(a+b)/2
Start with unimodal f(x) and minimum in [a,b]
Input: inline function f, interval [a,b], number of steps k
Output: approximate minimum y
function y=gss(f,a,b,k)
g=(sqrt(5)-1)/2
x1 = a+(1-g)*(b-a)
x2 = a+g*(b-a)
f1=f(x1) f2=f(x2)
for i=1:k
if f1 < f2 if f(x1) < f(x2), replace b with x2
b=x2 x2=x1 x1=a+(1-g)*(b-a)
f2=f1 f1=f(x1) single function uation
else otherwise, replace a with x1
a=x1 x1=x2 x2=a+g*(b-a)
f1=f2 f2=f(x2) single function uation
end
end
y=(a+b)/2 -codings for layer Program 13.1 Golden Section Search for minimum of f(x)
Start with unimodal f(x) and minimum in [a,b]
Input: inline function f, interval [a,b], number of steps k
Output: approximate minimum y
function y=gss(f,a,b,k)
g=(sqrt(5)-1)/2
x1 = a+(1-g)*(b-a)
x2 = a+g*(b-a)
f1=f(x1) f2=f(x2)
for i=1:k
if f1 < f2 if f(x1) < f(x2), replace b with x2
b=x2 x2=x1 x1=a+(1-g)*(b-a)
f2=f1 f1=f(x1) single function uation
else otherwise, replace a with x1
a=x1 x1=x2 x2=a+g*(b-a)
f1=f2 f2=f(x2) single function uation
end
end
y=(a+b)/2
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