Twitter can predict when you will fall sick
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Social networking site Twitter can predict whether you are going to fall ill- eight days in advance, a new study has claimed.
Researchers from University of Rochester have already used
the site to track flu as it spreads through New York using a
'heatmap' of users who complain of being ill, the 'Daily Mail'
Adam Sadilek from the University and his team analysed 4.4
million GPS-tagged Tweets from over 6,00,000 users in New York City over the course of one month in 2010.
They trained their artificial intelligence algorithm to ignore tweets by healthy people such as those claiming they were 'sick' of a particular song, and trained it to find those who were really ill.
Sadilek said the key to his system is friendships. "Given that three of your friends have flu-like symptoms, and that you have recently met eight people, possibly strangers, who complained about having runny noses and headaches, what is the probability that you will soon become ill as well?" he was quoted by the paper as saying.
"Our models enable you to see the spread of infectious diseases, such as flu, throughout a real-life population observed through online social media," he added.
The tweets were plotted on a map, and used to predict when
a particular user was at high risk of getting ill.
"We apply machine learning and natural language understanding techniques to determine the health state of
Twitter users at any given time," Sadilek said.
"Since a large fraction of tweets is geo-tagged, we can plot them on a map, and observe how sick and healthy people
interact," he said.
"Our model then predicts if and when an individual will fall ill with high accuracy, thereby improving our understanding of the emergence of global epidemics from people's day-to-day interactions," he said.
The heat maps show a city going through a flu epidemic.
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