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 ‘It’s Like the Matrix:’ Twitter May Help Read Investors’ Minds

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Sauros

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PostSubject: ‘It’s Like the Matrix:’ Twitter May Help Read Investors’ Minds   Thu Oct 21, 2010 10:32 am

By Nick Gentle
Oct. 21 (Bloomberg) -- The millions of messages sent daily via Twitter Inc. can help predict moves in the Dow Jones Industrial Average by analyzing sentiment, said researchers at Indiana University and the University of Manchester.
By scouring tweets for key words and analyzing them using an algorithm they developed to divine the mood of Twitterers, Johan Bollen, Huina Mao and Xiao-Jun Zeng said they were able to predict the daily up and down movements of the Dow during a period in 2008 with 87 percent accuracy. Now they are testing whether their results can be applied to real-time data.
“So far we have observed that some of the parameters may change over time but that our conclusion that Twitter mood data can predict fluctuations in the stock market will stand,” said Indiana University’s Bollen in an e-mail interview. “We feel that we have merely uncovered the tip of the proverbial iceberg.”
The research suggests that Twitter analysis could provide a cheap way to improve results of other computer models that use news events and other publicly available data to anticipate how investors will act. The data may even predict to some extent the magnitude of stock market moves, Bollen said.
“It feels a little like the Matrix,” said Christian Kielland, managing director of BTIG Hong Kong Ltd. “I definitely wouldn’t discount it. Without a doubt, sentiment and psychology are huge factors in trying to predict markets.”

Flash Crash

Automated programs that trade on information other than price have been blamed in part for the May 6 “flash crash”
that wiped $862 billion off the U.S. market. A June 2 plunge in the shares of Diebold Inc. may also have been triggered when an item of year-old news was misinterpreted by the growing army of computers that search for financial information, analyze it and trade instantly without human involvement, market analysts said.
Bollen’s team outlined their findings in a paper published Oct. 14 on arXiv.org, an on-line journal. The team trawled through 9.9 million tweets using two tools, one called OpinionFinder which sorts messages into either positive or negative moods, and another from Google Inc., which classifies text into six mood dimensions: calm, alert, sure, vital, kind, and happy. While the OpinionFinder data was not very good at predicting stock market movements, one of the Google dimensions, calm, was excellent.

Mood Predicts Dow

“Changes of the public mood along these mood dimensions match shifts in the DJIA values that occur three to four days later,” the team said. “The aggregate of millions of tweets submitted to Twitter at any given time may provide an accurate representation of public mood and sentiment.”
Bollen said further research would be aimed at clarifying the relationships between the mood dimensions and to develop more formal models to predict how a change in the mood of Twitterers can influence the Dow.
“With more and more information out there and available in the public space it makes sense for people to undertake this sort of Matrix building,” said BTIG’s Kielland “It would hold up better somewhere like the U.S. because a high proportion of people there are actively involved in the market. So when all those tweets are happening it’s more likely they are coming from someone who holds some stocks or other investments.”

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Snapman

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PostSubject: Re: ‘It’s Like the Matrix:’ Twitter May Help Read Investors’ Minds   Mon Oct 25, 2010 7:12 am

Sauros wrote:
By Nick Gentle
Oct. 21 (Bloomberg) -- The millions of messages sent daily via Twitter Inc. can help predict moves in the Dow Jones Industrial Average by analyzing sentiment, said researchers at Indiana University and the University of Manchester.
By scouring tweets for key words and analyzing them using an algorithm they developed to divine the mood of Twitterers, Johan Bollen, Huina Mao and Xiao-Jun Zeng said they were able to predict the daily up and down movements of the Dow during a period in 2008 with 87 percent accuracy. Now they are testing whether their results can be applied to real-time data.
“So far we have observed that some of the parameters may change over time but that our conclusion that Twitter mood data can predict fluctuations in the stock market will stand,” said Indiana University’s Bollen in an e-mail interview. “We feel that we have merely uncovered the tip of the proverbial iceberg.”
The research suggests that Twitter analysis could provide a cheap way to improve results of other computer models that use news events and other publicly available data to anticipate how investors will act. The data may even predict to some extent the magnitude of stock market moves, Bollen said.
“It feels a little like the Matrix,” said Christian Kielland, managing director of BTIG Hong Kong Ltd. “I definitely wouldn’t discount it. Without a doubt, sentiment and psychology are huge factors in trying to predict markets.”

Flash Crash

Automated programs that trade on information other than price have been blamed in part for the May 6 “flash crash”
that wiped $862 billion off the U.S. market. A June 2 plunge in the shares of Diebold Inc. may also have been triggered when an item of year-old news was misinterpreted by the growing army of computers that search for financial information, analyze it and trade instantly without human involvement, market analysts said.
Bollen’s team outlined their findings in a paper published Oct. 14 on arXiv.org, an on-line journal. The team trawled through 9.9 million tweets using two tools, one called OpinionFinder which sorts messages into either positive or negative moods, and another from Google Inc., which classifies text into six mood dimensions: calm, alert, sure, vital, kind, and happy. While the OpinionFinder data was not very good at predicting stock market movements, one of the Google dimensions, calm, was excellent.

Mood Predicts Dow

“Changes of the public mood along these mood dimensions match shifts in the DJIA values that occur three to four days later,” the team said. “The aggregate of millions of tweets submitted to Twitter at any given time may provide an accurate representation of public mood and sentiment.”
Bollen said further research would be aimed at clarifying the relationships between the mood dimensions and to develop more formal models to predict how a change in the mood of Twitterers can influence the Dow.
“With more and more information out there and available in the public space it makes sense for people to undertake this sort of Matrix building,” said BTIG’s Kielland “It would hold up better somewhere like the U.S. because a high proportion of people there are actively involved in the market. So when all those tweets are happening it’s more likely they are coming from someone who holds some stocks or other investments.”



This type sentiment indicator is similar to google search indexes and comparing them financial products… very interesting the world we live in. Social media and its powers… I see a new academic field branching out from all this.
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‘It’s Like the Matrix:’ Twitter May Help Read Investors’ Minds
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