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merlin's picture

They have: 410 posts

Joined: Oct 1999

me and my colleagues are discussing google's correction system. i guess you know it?

(you enter a word and make a (spelling) mistake (aple). google offers you a search of the word without the mistake [did you mean: apple]).

does anyone of you have experience in such algorithms? how do you think does it work (in general)?

we guess it must be something like:
1. search for the entered word and getting the results
2. searching for other words, that 'look' like the entered one (comparing the letters and their place in the word) and getting the results
3. realizing, that another, very similar word, gets much more results
4. offering this word as [did you mean: ...]

what do you think of this? if you do agree, do you know more about step 2 (the comparing of the words)?

their algorithm must be quite strong (did you expect anything else of google?): http://www.google.com/jobs/britney.html

thank you,
m

Mark Hensler's picture

He has: 4,044 posts

Joined: Aug 2000

My theory... google calculates the phonetic value of each search term, and searches a databank for words with the same phonetic value. Then it returns the 'corrected' word, which would most likely be determined by which word on the list of common phonetic values has the most results.

I read somewhere what the term is for calculating phonetic values, but I'm having a hard time finding it on google.

Mark Hensler ["Max Albert"] [Email]
If there is no answer on Google, then there is no question.

Mark Hensler's picture

He has: 4,044 posts

Joined: Aug 2000

Ah, found one algo: metaphone

merlin's picture

They have: 410 posts

Joined: Oct 1999

well, that sounds reasonable. didn't know, there are phonetic-scripts out there... Smiling thnx mark!

i don't know what about you, but i'm almost every day surprised about google. their engine is just too good.

Panky's picture

She has: 14 posts

Joined: Mar 2003

Google rules!

Laughing out loud
Panky
ICQ:51140074