|Scientists devise algorithm to detect sarcasm|
| A computer algorithm capable of identifying sarcasm in written text has |
been developed by Israeli researchers. The novel formula could pave the
way for more sophisticated communication between humans and computers. Devised by computer scientists at The Hebrew University in Jerusalem,
the algorithm has been programmed to recognise sarcasm in lengthy texts
by analysing patterns of phrases and punctuation often used to indicate
irony. In tests on 66,000 product reviews posted on the Amazon shopping
website, the algorithm had an impressive 77 per cent success rate in
picking out sarcastic comments - arguably higher than some humans. The researchers 'trained' the algorithm to recognise sarcasm by teaching
it nearly 5,500 sentences from Amazon reviews that volunteers had marked
as either sarcastic or non-sarcastic. From this list of phrases, the
algorithm was taught to recognise patterns of words commonly used by
writers to show that they do not mean to be taken literally. The algorithm was tested on tens of thousands of other Amazon reviews
which had also been tagged for sarcasm, or otherwise, by human readers.
It produced accurate answers in 77% of cases.
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