从以前的问题FCM Clustering numeric data and csv/excel file林正试图找出如何采取outputed信息,并创建了与MATLAB集群使用一个可行的.dat文件领先的。Matlab的集群和数据格式
%# read the list of features
fid = fopen('kddcup.names','rt');
C = textscan(fid, '%s %s', 'Delimiter',':', 'HeaderLines',1);
fclose(fid);
%# determine type of features
C{2} = regexprep(C{2}, '.$',''); %# remove "." at the end
attribNom = [ismember(C{2},'symbolic');true]; %# nominal features
%# build format string used to read/parse the actual data
frmt = cell(1,numel(C{1}));
frmt(ismember(C{2},'continuous')) = {'%f'}; %# numeric features: read as number
frmt(ismember(C{2},'symbolic')) = {'%s'}; %# nominal features: read as string
frmt = [frmt{:}];
frmt = [frmt '%s']; %# add the class attribute
%# read dataset
fid = fopen('kddcup.data','rt');
C = textscan(fid, frmt, 'Delimiter',',');
fclose(fid);
%# convert nominal attributes to numeric
ind = find(attribNom);
G = cell(numel(ind),1);
for i=1:numel(ind)
[C{ind(i)},G{i}] = grp2idx(C{ind(i)});
end
%# all numeric dataset
M = cell2mat(C);
我有几种类型的数据,看起来像这样:
我想下面的方法来创建.dat文件,但与错误想出了:
>> a = load('matlab.mat');
>> save 'matlab.dat' a -ascii
Warning: Attempt to write an unsupported data type
to an ASCII file.
Variable 'a' not written to file.
>> a = load('data.mat');
>> save 'matlab.dat' a -ascii
Warning: Attempt to write an unsupported data type
to an ASCII file.
Variable 'a' not written to file.
>> save 'matlab.dat' a
>> findcluster('matlab.dat')
??? Error using ==> load
Number of columns on line 1 of ASCII file
C:\Users\Garrith\Documents\MATLAB\matlab.dat
must be the same as previous lines.
Error in ==> findcluster>localloadfile at 471
load(filename);
Error in ==> findcluster at 160
localloadfile(filename, param);
Matlabs聚类工具适用于多维数据集,但只显示两个 尺寸。然后,您使用x和y轴进行比较,但是我不太确定是否可以从当前数据创建聚类2d分析?
我需要做的是从我以前的帖子FCM Clustering numeric data and csv/excel file
正常化M档数据标准化的:
发现的最小和最大的数据集
标准化规模最小和在数据最大
号码设置
标准值
所以,第一个问题是我怎么找到我的数据集的最小和最大数(M)
第1步: 查找数据集中的最大值和最小值并代表他们与变量资本和资本B:
Lets say minimum number A = 92000
and max number say B = 64525000
第二步正常化 确定的最小和最大数,并设置杂物统计局小写a和b 不确定(你如何规范化数据下手不知道)如何在MATLAB做到这一点
set the minimum = a = 1
set the maximum = b = 10
第3步 计算任意数x的标准化值利用方程
A = 92000
B = 64525000
a = 1
b = 10
x = 2214000
a + (x - A)(b - a)/(B - A)
1+(2214000 - 92000)(10-1)/(6425000 - 92000)
= 4.01
这是两个独立的问题。 – Nzbuu