comparing cell of strings with different size in matlab

Question

i want to compare [1*232] cells of strings containing individual words from text document with [1*23] cells that contain individual sentences from the same text, can any one help me how to program it in Matlab? for example: "pollution" and "trees" are two words in separate cells and following are the two sentences in separate cells: 1. trees reduce pollution. 2. trees prevent floods.

what i want to do is put 0 or 1 after comparing pollution and trees with both the sentences or in my case "n" sentences and put 1's and 0's in the form of matrices. any help will be appreciated.

Take a look at strfind, example: document={'trees reduce pollution','trees prevent floods'};index=strfind(document,'pollution');found=cellfun(@(x)(~isempty(x)),index) — Daniel
– Daniel, Commented Feb 24, 2015 at 8:43

LowPolyCorgi · Accepted Answer · 2015-02-24 10:21:43Z

1

You can use a combination of cellfun and strfind. Here is a try:

Sentences = {'trees reduce pollution' ; ... 
    'trees prevent floods' ; ...
    'pollution is bad' ; ...
    'flood is worse'};

Words = {'trees', 'pollution', 'bad'};

Out = NaN(numel(Sentences), numel(Words));

for i = 1:numel(Words)
    Out(:,i) = cellfun(@(x) numel(strfind(x, Words{i})), Sentences);
end

And Out contains:

Out =

     1     1     0
     1     0     0
     0     1     1
     0     0     0

Hope this helps.

answered Feb 24, 2015 at 10:21

LowPolyCorgi

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2 Comments

Afzaal Ahmad Over a year ago

thanks a ton, this logic worked for me absolutely fine.cheers

LowPolyCorgi Over a year ago

Thanks for your nice comment. Don't hesitate to mark this question as "solved".

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