How to detect if one tweet is agreeing with another I want to detect tweet text agreement. Suppose someone posts some subjective opinion in twitter. Other users will post reply either agreeing or opposing the original tweet. I want to estimate the amount of agreement. Is there any algorithm/library in any language to do that or any labeled dataset?
Not sure there is anything for that, you could check


is it a verbatim retweet
does it have the same sentiment
is the edit distance low


Or you can train your own model, where you label (agree) by hand and then build features.