[gohrt]

The article's authors don't even seem to know what sarcasm is.

Their example “A woman needs a man like a fish needs a bicycle.” is not sarcastic so much as colorful analogy.

The researcher's word2vec approach is really a search for 'non-sequitur' -- any sentence that semantically goes of the rails at the end, it's probably better at detecting humor in general than 'sarcasm'

[webmaven]

Mmm... Seems somewhat sarcastic to me in terms of subverting the simile-as-framing-device (in roughly the same way as "I need that like I need another hole in my head"). But in terms of which side of the fuzzy line between irony and sarcasm this lies, it may be closer to irony.