I'm looking for a way to find all recurring phrases in some documents. Example: Given this text I want to detect the phrase "Leonardo da Vinci" as it appears twice: 
Leonard of Quirm, a character in the Discworld series of novels, 
is based largely on Leonardo da Vinci.

Leonardo da Vinci died at Clos Lucé, France, on 2nd May, 1519.

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The only solution I can think of is to loop through the text, word by word, and search the remaining text for multiple occurences of that word. If found, check if the successive words are the same, and so on...

But that method is very slow, as I need to loop through the content many times.
I'm wondering if there's a way to do it more efficient...

Len

In reply to Finding recurring phrases by Anonymous Monk

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