Scientists devise model to predict success of films



LONDON: Producers and actors may no more have sleepless nights before their movies are released. Oxford University scientists have devised a mathematical model, which can be used to predict whether films will become blockbusters or flops at the box office up to a month before they are released. Their mathematical algorithm allows them to predict box office revenues with an overall accuracy of around 77%.

The study authors say this level of accuracy is higher than the best existing predictive models applied by marketing firms, which they estimate to be around 57%.
The scientists say they could predict the box office takings of six out of 312 films with 99% accuracy where the predicted value was within 1% of the real value.
Over 20 movies were predicted with 90% accuracy and 70 with an accuracy of 70% and above.

Their model is based on an analysis of the activity on Wikipedia pages about American films released in 2009 and 2010.

They examined 312 movies, taking into account the number of page views for the movie's article, the number of human editors contributing to the article, the number of edits made and the diversity of online users.

The researchers from Oxford University, the Central European University at Budapest, and Budapest University of Technology and Economics published their findings on Thursday.

Taha Yasseri from the Oxford Internet Institute at the University of Oxford, said, "These results can be of great value to marketing firms but more importantly for us, we were able to demonstrate how we can use socially generated online data to predict a lot about future human behaviour.''

"The predicting power of the Wikipedia-based model, despite its simplicity compared with Twitter, is that many of the editors of the Wikipedia pages about the movies are committed movie-goers who gather and edit relevant material well before the release date. By contrast, the mass production of tweets occurs very close to the release time, and often these can be spun by marketing agencies rather than reflecting the feelings of the public.''

The model was applied retrospectively so the researchers systematically charted the online buzz on Wikipedia around particular films and compared this with the box office takings from the first weekend after release.

The results of the comparison between the predicted opening weekend revenue, using their mathematical model, and the actual figures showed a high degree of correlation.
The more successful the film, the more accurately the researchers were able to predict box office takings.

In the study, they explain that this is possibly due to the increased amount of online data generated by films that turn out to be successes.

The model correctly forecasted the commercial success of Iron Man 2, Alice in Wonderland, Toy Story 3 and Inception. But it failed to accurately forecast the financial return on the less successful movies Never Let Me Go and Animal Kingdom.

Co-author Janos Kertesz from the Central European University of Budapest, Hungary, said, "We have demonstrated for the first time that Wikipedia edit statistics provide us with another tool to predict social events.''

Kertesz said they studied the problem of predicting the financial success of movies and concluded that, in some aspects, forecasting based on Wikipedia outperforms tweets as Wikipedia activity has a longer timescale which enables earlier predictions.

A tracker to catch cheating boyfriends




RIO DE JANEIRO: Brazilians were outraged when they learned their country was a top target of the US NSA's overseas spying operation, with data from billions of calls and emails swept up in Washington's top secret surveillance programme.

Yet when it comes to the cloak and dagger effort of catching philandering lovers, all high-tech weapons appear to be fair game — at least to the tens of thousands of Brazilians who downloaded "Boyfriend Tracker" to their smartphones before the stealthy software was removed from the Google Play app store last week, apparently in response to complaints about privacy abuses and its potential to be used for extortion or even stalking.

"Brazilians are a jealous people , what can I say? Of course it's going to be popular," said Marcia Almeida, a 47-year-old woman in Rio whose marriage ended seven years ago in large part because of what she said was her husband's infidelity.

The app, called "Rastreador de Namorados" (Portuguese for Boyfriend Tracker), promises to act like a "private detective in your partner's pocket." Functions include sending the person doing the tracking updates on their partner's location and forwarding duplicates of text message traffic from targeted phone. There is even a command that allows a user to force the target phone to silently call their own, like a pocket dial, so they can listen in on what the person is saying. Similar apps are marketed for smartphone users in other countries, including Europe and the US, but Boyfriend Tracker is the first that has made impact.

Google spokeswoman Gina Johnson said by email that as a policy the company doesn't comment on why apps are removed.

Critics say such apps can violate privacy rights, and they warn that in the wrong hands they could be used for more sinister purposes, like stalking. Some in Brazil argue it breaks an anti-online harassment and hacking law in place since April.

The law is named after Brazilian actress Carolina Dieckmann , who had nude photos of herself leaked by hackers in 2012 after she refused to pay about $5,000. However, similar apps on Google Play market themselves to parents as a means of monitoring how teenage children use the phone and where they are. AP

Hackers also target cellphones


PATNA: If you think hacking is limited to computer systems or laptops, beware! Cellphones are also soft target of hackers who can send text messages from your cellphones or track your calls without your knowledge.

"It is also not very difficult to steal data from Yahoo!, Gmail or Hotmail accounts or send e-mails without your permission or knowledge," added cyber security expert Ankit Fadia at a seminar on 'How to prevent hacking', organized here on Wednesday to mark the launch of new academic session at Arcade Business College. College director Ashish Adarsh also interacted with the students in the audience.

According to the 28-year old ethical hacker, 'Trojan' virus is the root cause of all software issues. "If cyber criminals manage to install the virus in your computer system, they can control the hardware or software sitting anywhere across the globe," he said and underlined the need for the users to regularly update their antivirus software. For, even pen drives that facilitate data transfer are also a major source of spreading computer viruses.

Citing an example of how mobile phones could be misused, Fadia said, "Twenty parents of students of a particular college simultaneously received an SMS from the college mobile number, asking them to deposit college fee of Rs 1 lakh in a given account number the same day. Three such parents immediately deposited the money, and ended up duped." To prevent such a crime, Fadia said, people should verify the authenticity of the calls or SMSs asking for money, instead of responding immediately.

Fadia, whose name is also registered in the Limca Book of Records, said even terror outfits were into hacking to disturb peace in different countries.