When I complete my title of question, the related questions are listed below. I am confused how can SO select the questions, there are no key words or someting like that.


It uses the words you have just typed in for your title as key words:-)

  • Good question titles are excellent search keywords. – BalusC Apr 13 '11 at 14:24
  • but the problem is if there are many words in question, it is very hard to match. – Alan Tam Apr 13 '11 at 14:45
  • @Alan I imagine they use stop words to only pick out the relevant words: en.wikipedia.org/wiki/Stop_words – Daniel DiPaolo Apr 13 '11 at 14:58

Per Jeff's answer here,

The /questions/ask page is the same as searching with intitle:1 , that is, it only searches title text exclusively.

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