word frequency
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hi!how can i find the most frequent word in string in matlab?
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Walter Roberson
2012-5-29
1 个投票
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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Sean de Wolski
2012-5-29
Something like:
str = 'See Spot run, see Spot jump, see Spot eat';
C = regexp(lower(str),' ','split')';
[val,idxC, idxV] = unique(C);
n = accumarray(idxV,1);
[n idxC] %n occurences for word C(idxC)
obviously this needs to be augmented to take into account punctuation, whether you want to account for caps etc.
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