MATLAB: How to recognize a word in a string

MATLABregexp

I would like to find a word in a string.

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Regular expressions can be used to carry out matching of strings. For example if you would like to recognize the word canfeld you can use:

regexp('canfeld hallo refcanfeld canfeld canfelder canfeld','\<canfeld\>')

There are also other functions that can be used depending on the application. Functions such as STRMATCH, STRCMP, STRFIND can be used.

Related Solutions

MATLAB: How to check if string contains some special character

For #1 you could use isstrprop().

For #2, see startsWith(str, '_') and endsWith(str, '_')

For #3, you can use find():

indexes = strfind(str, '__');

For #4 you could do something like

if str(1) >= '0' && str(1) <= '9'
    % str starts with a numerical digit.
else
    % str does not start with a numerical digit.
end

MATLAB: Word frequency

The first thing you need to do is to figure out what is or is not a "word" for your purposes. Contractions, possessives, hyphenation, abbreviations, acronyms, numbers.... ?

Is a capitalized word to be considered the same as a lower-case word? For example, "How" compared to "how" ?

Is a word in all-capitals to be considered the same as a lower-case word? For example, if you have an article about taking your house-hold "pet" to a "PET" scan, then are "pet" and "PET" the same word or different words?

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Related Solutions

MATLAB: How to check if string contains some special character

MATLAB: Word frequency

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