Sending tourists for a trip around the moon is the latest big idea launched by Elon Musk, a Silicon Valley star known for turning his passions into visionary enterprises. Musk has become one of the United States' best-known innovators. He was a founder of payments company PayPal, electric carmaker Tesla Motors and SpaceX, maker and launcher of rockets and spacecraft. SpaceX recently announced that two private citizens have paid money to be sent around the Moon in what would mark the farthest humans have ever traveled to deep space since the 1970s. In a sector where entrepreneurs often speak of "moonshots," Musk is one of the biggest dreamers.

More than two years after a multi-sided civil war erupted inside Yemen that allowed Al Qaeda's local franchise to amass power and seize territory, President Trump has directed the Pentagon to embark on a complicated counter-terrorism campaign. Trump's decision, just six weeks into his presidency, intends to reverse the largely unchecked expansion across southern Yemen of the group, Al Qaeda in the Arabian Peninsula. The willingness to expand counter-terrorism operations inside war-torn Yemen was the latest signal that Trump is more willing to defer to military commanders on national security policy than President Obama, who was criticized publicly by three of his four Defense secretaries and privately by uniformed officers for micromanaging the military. Over two days this week, armed drones and warplanes conducted more than 30 airstrikes against suspected Al Qaeda positions in three Yemeni provinces, marking the first U.S. attacks in the country since an ill-fated Navy SEAL raid in January that killed two dozen civilians, including women and children, Al Qaeda militants and Chief Petty Officer William "Ryan" Owens. The aerial bombardment is expected to continue into the coming week.

More than two years after a multi-sided civil war erupted inside Yemen that allowed Al Qaeda's local franchise to amass power and seize territory, President Trump has directed the Pentagon to embark on a complicated counter-terrorism campaign. Trump's decision, just six weeks into his presidency, intends to reverse the largely unchecked expansion across southern Yemen of the group, Al Qaeda in the Arabian Peninsula. The willingness to expand counter-terrorism operations inside war-torn Yemen was the latest signal that Trump is more willing to defer to military commanders on national security policy than President Obama, who was criticized publicly by three of his four Defense secretaries and privately by uniformed officers for micromanaging the military. Over two days this week, armed drones and warplanes conducted more than 30 airstrikes against suspected Al Qaeda positions in three Yemeni provinces, marking the first U.S. attacks in the country since an ill-fated Navy SEAL raid in January that killed two dozen civilians, including women and children, Al Qaeda militants and Chief Petty Officer William "Ryan" Owens. The aerial bombardment is expected to continue into the coming week.

Sequential quantile estimation refers to incorporating observations into quantile estimates in an incremental fashion thus furnishing an online estimate of one or more quantiles at any given point in time. Sequential quantile estimation is also known as online quantile estimation. This area is relevant to the analysis of data streams and to the one-pass analysis of massive data sets. Applications include network traffic and latency analysis, real time fraud detection and high frequency trading. We introduce new techniques for online quantile estimation based on Hermite series estimators in the settings of static quantile estimation and dynamic quantile estimation. In the static quantile estimation setting we apply the existing Gauss-Hermite expansion in a novel manner. In particular, we exploit the fact that Gauss-Hermite coefficients can be updated in a sequential manner. To treat dynamic quantile estimation we introduce a novel expansion with an exponentially weighted estimator for the Gauss-Hermite coefficients which we term the Exponentially Weighted Gauss-Hermite (EWGH) expansion. These algorithms go beyond existing sequential quantile estimation algorithms in that they allow arbitrary quantiles (as opposed to pre-specified quantiles) to be estimated at any point in time. In doing so we provide a solution to online distribution function and online quantile function estimation on data streams. In particular we derive an analytical expression for the CDF and prove consistency results for the CDF under certain conditions. In addition we analyse the associated quantile estimator. Simulation studies and tests on real data reveal the Gauss-Hermite based algorithms to be competitive with a leading existing algorithm.

With performance falling, investors fleeing and offices closing, hedge funds had a rough 2016. But San Francisco-based Numerai was just getting started. Instead of relying on the genius of a single person or small team, the firm uses encrypted data sets to crowdsource stock market prediction models built with artificial intelligence from 12,000 anonymous data scientists worldwide who compete to win bitcoin. And if that flew over your head, the main takeaways are that this hedge fund has orders of magnitude more data scientists trying to improve its investing strategy than the biggest name hedge funds today, and what makes the firm possible is a confluence of technologies that didn't even exist a few years ago -- primarily in cryptography and artificial intelligence. Now the one-year-old company, founded by 29-year-old South African Richard Craib (a Forbes 30 Under 30 designee) and funded by the likes of Union Square Ventures, is launching its own cryptocurrency, the Numeraire. It is the first virtual currency issued by a hedge fund and one of the first released by a company (rather than a group of developers or a non-profit).

President Donald Trump has ordered the U.S. military to step up in its fight against Islamic terror groups in Africa after various Al Qaeda offshoot groups have increased their militant actions in the massive continent, according to multiple reports. Somalia was named in Trump's executive order on immigration that banned travel to the U.S. from seven Muslim-majority countries. Adding a metaphorical insult to injury, three Islamic militant groups based in Mali have reportedly pledged allegiance to Al Qaeda this week, bolstering Al Qaeda's growing grip on Africa. While the U.S. government had not immediately addressed the reports of the Al Qaeda merger of sorts, experts in global conflict told the Associated Press that steps were already being taken to quell Al-Shabab's activities in the East African nation of Somalia. "The concern in Washington has been mounting for some time now," Rashid Abdi, an analyst with the International Crisis Grou "The Trump administration is simply reiterating what has been policy, with slight variations. U.S. special forces are already on the ground. Drone attacks have been scaled up."

With frequent suicide bombings and assaults on Somalia's hotels and military targets, the armed group al-Shabab continues to threaten stability in the war-ravaged country. The emergence of fighters pledging allegiance to the Islamic State of Iraq and the Levant (ISIL) group can only make things worse. After vowing to target "radical Islamic terrorism", US President Donald Trump's administration plans to pursue wider military involvement in Somalia as current strategies, including drone attacks, are not enough, security experts say. Recommendations by the Pentagon sent to the White House would allow US special forces to increase assistance to the Somali National Army and give the US military greater flexibility to launch more preemptive air strikes. "The concern in Washington has been mounting for some time now. The Trump administration is simply reiterating what has been policy, with slight variations," said Rashid Abdi, a Horn of Africa analyst with the International Crisis Group.

Tristan Fletcher, co-founder of London artificial intelligence startup Informed Actions, describes how evolving quantitative approaches are going well beyond finance to advance humanitarian goals in health care. The approaches are being used to improve ambulance services in South Africa and tackle pollution in China. Fletcher was speaking at Newsweek's Artificial Intelligence and Data Science in Capital Markets conference, in London, March 2.

In a feat reminiscent of the controversial victory by supercomputer'Deep Blue' over world chess champion Garry Kasparov, a computer program has managed to beat a string of professional poker players at the game. DeepStack, as it was called, defeated 10 out of 11 players who took part in a total of 3,000 games as part of a scientific study into artificial intelligence. The 11th player also lost, but by a margin that the researchers decided was not large enough to be statistically significant. This is not the first time a computer has won at poker. Libratus, a program developed by Carnegie Mellon University academics, won $1.76m (£1.4m) from professionals in January, for example.

A pair of psychologists have spoken up to defend violent video games such as Call of Duty and Grand Theft Auto, claiming that they can have a positive social impact. In a new book, titled'Moral Combat', psychology experts Dr Patrick Markey and Dr Christopher Ferguson claim that'the war on violent video games is wrong.' They suggest that countries where video games are popular are some of the safest in the world. In a new book, titled'Moral Combat', psychology experts Dr Patrick Markey and Dr Christopher Ferguson claim that'the war on violent video games is wrong'. One of the most successful game franchises of all time, Grand Theft Auto has also been one of the most controversial.