Graph representations offer powerful and intuitive ways to describe data in a multitude of application domains. Here, we consider stochastic processes generating graphs and propose a methodology for detecting changes in stationarity of such processes. The methodology is general and considers a process generating attributed graphs with a variable number of vertices/edges, without the need to assume one-to-one correspondence between vertices at different time steps. The methodology acts by embedding every graph of the stream into a vector domain, where a conventional multivariate change detection procedure can be easily applied. We ground the soundness of our proposal by proving several theoretical results. In addition, we provide a specific implementation of the methodology and evaluate its effectiveness on several detection problems involving attributed graphs representing biological molecules and drawings. Experimental results are contrasted with respect to suitable baseline methods, demonstrating the effectiveness of our approach.

Some firms in China now use artificial intelligence–powered facial recognition programs to confirm identities. BEIJING--In a gleaming high-rise here in northern Beijing's Haidian district, two hardware jocks in their 20s are testing new computer chips that might someday make smartphones, robots, and autonomous vehicles truly intelligent. The onlooker, Chen Yunji, a 34-year-old computer scientist and founding technical adviser of Cambricon Technologies here, explains that traditional processors, designed decades before the recent tsunami of artificial intelligence (AI) research, "are slow and energy inefficient" at processing the reams of data required for AI. "Even if you have a very good algorithm or application," he says, its usefulness in everyday life is limited if you can't run it on your phone, car, or appliance. "Our goal is to change all lives."

Inc will pump $2 billion into its Canadian business over the next five years, it said on Thursday, the latest major U.S. high technology investment across the border since early 2017. Toronto is a hub for artificial intelligence research and Canadian Prime Minister Justin Trudeau is visiting California this week in part to speak with U.S. technology CEOs. Canadian leaders have promoted their country's immigration policies as an alternative to the Trump Administration's ban on travelers from some Muslim countries and restrictions on work permits for some foreigners. A Canadian program allows businesses to get work permits for foreign workers in about two weeks. Salesforce said it would increase its Canadian office space, data center capacity and 1,000-strong workforce, without giving details.

My guest Robert Draper says one of the greatest threats to our democracy is gerrymandering, in which the party in power in a state redraws the map of election districts to give the advantage to that party's candidates. Since districts are redrawn only every 10 years following the census, gerrymandering can almost guarantee that the majority party will stay in power. There are a couple of gerrymandering cases currently before the Supreme Court. Draper has reported on gerrymandering, and we'll talk about that a little later. First, we're going to talk about his new article "They Are Watching You - And Everything Else On The Planet" published in this month's National Geographic. It's about state-of-the-art surveillance from closed-circuit TV to drones and satellites and the questions these surveillance technologies raise about privacy. As part of his research, he spent time in surveillance control rooms in London. And he went to a tech company in San Francisco whose mission is to image the entire Earth every day. Draper is a contributing writer for National Geographic and a writer at large for The New York Times Magazine. So let's start with surveillance. Why did you choose England as the place to report on surveillance? ROBERT DRAPER: Well, England has become kind of an obvious focal point to talk about surveillance. It's become, in a way, a petri dish for the subject, I suppose, for a couple reasons. First of all, the U.K. is where George Orwell wrote his dystopian classic "1984" back in 1949 when the totalitarianism of Nazi Germany and the USSR were his prime reference points.

In the middle of this live stream image of the car, on the center screen, are the words'Don't Panic'. This a reference to The Hitchhiker's Guide to the Galaxy, the 1979 book that was first in a series by Douglas Adams about an accidental space traveler, Arthur Dent. In the story, the Guide has the words'Don't Panic' on its cover Two of the Falcon Heavy's reusable boosters - both recycled from previous launches - returned minutes after lift-off for on-the-mark touchdowns at Cape Canaveral. Sonic booms rumbled across the region with the synchronised vertical landings. However, the craft's third and final booster missed its target - a drone ship in the Atlantic Ocean - by about 328 feet (100 metres).

China's push to develop powered exoskeletons has implications for almost every area of combat operations. If the plans prove successful, Chinese infantry and special operators could not only carry heavier equipment for longer distances, but also attach body armor to individuals. None of which can fly like Iron Man. More prosaically, exoskeletons can be used to assist soldiers in a bunch of support tasks, including loading supplies, getting missiles onto airplanes, and repairing ships. Peter Warren Singer is a strategist and senior fellow at the New America Foundation.

Self-driving cars should be welcomed for their substantial safety and mobility gains for the traveling public, especially the elderly and disabled. But the federal government's failure to modernize auto regulations is already denying consumers safer and superior products, and this problem will only grow larger as automated driving systems near the deployment stage. Marc Scribner (@marcscribner) is a senior fellow at the Competitive Enterprise Institute, a free-market public policy organization in Washington, D.C., and author of the recent study, Modernizing Federal Motor Vehicle Safety Standards. Congress has long recognized that federal regulations should be informed by technical standards developed outside the government, as officials generally lack engineering expertise. Bipartisan bills--the Self Drive Act (Safely Ensuring Lives Future Deployment and Research in Vehicle Evolution) passed by the House, and the AV Start (American Vision for Safer Transportation through Advancement of Revolutionary Technologies) Act pending in the Senate--both recognize that the federal government should continually update its automated vehicle definitions to reflect the industry's best available technical knowledge.

NEW DELHI: To counter China's commitment towards artificial intelligence, the government has formed a high-level committee headed by NITI Aayog vice chairman Rajiv Kumar to lay out a roadmap for India's research and development on AI and its applications. The panel, which will be a mix of government, academia and industry officials, will be notified soon. The government wants to ensure India does not fall behind in emerging technologies and hence the urgency to roll out a nationwide AI programme that will include robotics and data analytics. China has prepared a threestep roadmap to become the world leader in AI by 2030. A preliminary meeting on AI was held in January and was attended by NITI Aayog member VK Saraswat, the secretaries of biotechnology and science and technology, former Nasscom head Kiran Karnik, former Infosys CFO Mohandas Pai, IIT faculty members including Pankaj Jalote and Pulok Ghosh, besides top officials from Flipkart, NetApp and TIE Ventures.

Imagine a police car that issues tickets without even pulling you over. What if the same car could use artificial intelligence to find good hiding spots to catch traffic violators and identify drivers by scanning license plates, tapping into surveillance cameras and wirelessly accessing government records? What if a police officer tapping on your car window asking for your license and registration became a relic of transportation's past? The details may sound far-fetched, as if they belong in the science-fiction action flick "Demolition Man" or a new dystopian novel inspired by Aldous Huxley's "Brave New World," but these scenarios are grounded in a potential reality. They come from a patent developed by Ford and being reviewed by the U.S. government to create autonomous police cars.

The tech industry is having a moment of reflection. Even Mark Zuckerberg and Tim Cook are talking openly about the downsides of software and algorithms mediating our lives. And while calls for regulation have been met with increased lobbying to block or shape any rules, some people around the industry are entertaining forms of self regulation. Microsoft released a 151-page book last month on the effects of artificial intelligence on society that argued "it could make sense" to bind coders to a pledge like that taken by physicians to "first do no harm." In San Francisco Tuesday, dozens of data scientists from tech companies, governments, and nonprofits gathered to start drafting an ethics code for their profession.