段落内的strfind split关键字

Question

在URL中输出关键字后，如何检查关键字是否存在于页面内容中，如下面的内容，如果是，则返回1，否则返回0.有strfind在那里，但我不知道为什么它不能工作

str = 'http://en.wikipedia.org/wiki/hostname'
Paragraph = 'hostname From wikipedia, the free encyclopedia Jump to: navigation, search In    computer networking, a hostname (archaically nodename .....'
SplitStrings = regexp(str,'[/.]','split')

for it = SplitStrings
c( it{1} ) = strfind(Paragraph, it{1} )
end

SplitStrings = {};

feature11=(cellfun(@(n) isempty(n), strfind(Paragraph, SplitStrings{1})))

我可以使用以下代码4来检查＆＃39; https＆＃39;存在与否。但是，如何修改＆＃39; SplitString＆＃39;进入＆＃39; B6＆＃39;？

str = 'https://en.wikipedia.org/wiki/hostname'

A6 = regexp(str,'\w*://','match','once')
B6 = {'https'};

feature6=(cellfun(@(n) isempty(n), strfind(A6, B6{1})))

Answer 1

我绝对不清楚你想在这做什么......

我怀疑是这样的：

str      = 'http://en.wikipedia.org/wiki/hostname';

haystack = 'hostname From wikipedia, the free encyclopedia Jump to: navigation, search In    computer networking, a hostname (archaically nodename .....';
needles  = regexp(str,'[:/.]*','split') %// note the different search string

%// What I think you want to do
~cellfun('isempty', regexpi(haystack, needles, 'once'))

结果：

needles = 
    'http'    'en'    'wikipedia'    'org'    'wiki'    'hostname'
ans =
     0     1     1     0     1     1

但如果不是这种情况，请编辑您的问题，并为一些示例输入添加所需的输出。

修改

好的，所以如果我现在理解你，你想要整个单词而不是部分匹配。您必须通过以下方式告诉regexp：

%// NOTE: these  metacharacters indicate that match is to occur 
%//       at beginning AND end of word (so whole words only)
needles  = strcat('\<', regexpi(str,'[:/.]*','split'), '\>') 

%// Search for these words in the paragraph
~cellfun('isempty', regexpi(haystack, needles, 'once'))

Answer 2

你可以试试这个

f=@(str) isempty(strfind(Paragraph,str))
cellfun(f,SplitStrings)

这应该得到完整的话。关键是解析变量Paragraph以获取它们

SplitParagraph=regexp(Paragraph,'[ ,:.()]','split');
I=ismember(SplitStrings,SplitParagraph);
SplitStrings(I)