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5 news item on technology development​

Answer 1

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trends on social media in the hope that they will be able to monitor tweets to quickly identify a rise of influenza, depression or other health issues in a specific area, according to research at the Department of Energy’s Pacific Northwest National Laboratory (PNNL).

The researchers uncovered the expression of opinion and emotion as a potential signal on Twitter, as reported in the journal European Physical Journal (EPJ) Data Science. “Opinions and emotions are present in every tweet, regardless of whether the user is talking about their health," said Svitlana Volkova, a data scientist at PNNL and lead author of the study in a 14 August press statement. “Like a digital heartbeat, we’re finding how changes in this behaviour relate to health trends in a community."

But can tweets replace a health exam for detecting a rise in the flu or other health threats? Volkova’s research suggests so. The research team studied 171 million tweets from users associated with the US military to determine if the opinions and emotions they express reflect visits to the doctor for influenza-like illnesses. They compared military and civilian users from 25 US and six international locations to see if this pattern varies based on location or military affiliation.

For privacy, the tweets used in this study were anonymized. The goal of the research is to discover generalized public health trends, not diagnose the health status of individual users. Overall, they found how people behave significantly varies by location and group. For example, tweets from military populations tend to contain more negative and less positive opinions, as well as increased emotions of sadness, fear, disgust and anger. This trend is true regardless of health.

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