Not many people understand how these unwanted messages are separated from wanted messages. You can't simply filter based on sender address, as new spam addresses can easily be created. The second reason is that spam is often sent from legitimate email accounts hijacked by third parties. The best way to separate spam is to look at the content of the email messages. The most effective techniques to do this are based on machine learning.

There are lots of great tools out there for building machine learning models and data processing pipelines. Most of these tools, like R, scikit-learn, spark.ml At CrowdFlower, we use many of these resources to varying degrees. However, we also recognize that many people will prefer to approach model building and deployment in a hands-on integrated environment supported by a graphical interface. To this end, we are pleased to showcase an end-to-end model construction process in Microsoft's Azure Machine Learning Studio.

BuddyGuard, a Berlin-based Smart Home start-up company, has started selling its Flare home security system that uses face and voice recognition to authenticate visitors. Flare uses artificial intelligence (AI) in order to bring an additional layer of home security and will send police to a residence on its own without a user's approval. The Smart Home security system uses a software called AudioIntel that distinguishes normal noise from suspicious sounds, allowing the system to take action on its own. However homeowners will still be informed through notifications, BuddyGuard says. The saucer-like security system Flare is able to distinguish normal noise from suspicious sounds and will take actions on its own.

This annual gathering sees robotics experts from all over the planet fielding teams of battling soccerbots in a bid for robot football supremacy. In this CNET special feature, we take you inside the tournament, revealing the goals, dives and cutting-edge technology deployed in this quirky footie-fest. This year's tournament took place in Leipzig, Germany, where robots across both humanoid and non-humanoid leagues went head-to-head. Meet the Australian team out to defend their title, see why a change to the regulation ball has scores of robots baffled, and enjoy the sight of extremely adorable robots falling over -- then hopping right back up again. Hit play on the video above to check it out, and see more videos from RoboCup below. The pace of artificial intelligence is relentless, so it's not surprising that robot competitors are frequently retired from the game.

IBM has given its investors a sign that Big Blue may finally be turning things around. Revenue increased for the first time in a key unit -- cognitive solutions, including its Watson artificial intelligence platform -- that the company has been touting as crucial to future growth. The results may signal that Chief Executive Officer Ginni Rometty is making good on her promise to shift IBM's software and services offerings to match customers' increasing appetite for cloud-based solutions. It's been an uphill battle. Overall, sales have declined for 17 quarters in a row, while margins have also narrowed.

AT&T uses artificial intelligence to tell if things are going wrong in its network. Soon, AI may know it before it happens. The carrier says it's been using AI for decades in areas like call-center automation but developed it for each use as they came along. Now AT&T is pouring its AI smarts into a one platform that can be used with multiple applications. "I can't just keep doing this once at a time. We need a foundation," said Mazin Gilbert, assistant vice president of the company's Inventive Sciences division, in an interview last week at the AT&T Shape conference in San Francisco.

The fear of intelligence in something other than the human mind has long been feared by scientists, conspiracy theorists and tech-minded people since the very notion it was possible was thought of. The argument that artificial intelligence could be the best or worst thing for humanity is a divisive battle, one with many good points on either side. Since the dawn of the artificial intelligence field people have been warning of a machine-revolt, over throwing human power in one sweep as the conscious machines take over the world. Some scientists believe that humanity is not doing enough to prepare for the inevitable rise of artificial intelligence. Artificial intelligence is a broad and active area of research, but it's no longer solely thought of in academics.

On Thursday, June 23, 51.9% of the over 33 million who voted opted for the UK to leave the EU. By June 27, the pound had fallen to a 31 year low against the dollar. On the same day, Ireland's foreign minister was forced to issue a plea asking UK nationals to "stop rushing for Irish passports", as post offices in Belfast ran out of application forms. Up to 7% of those who had voted to leave now regretted their decision, according to media reports. Regardless of the turnout, two commonly known economic principles ensure that referenda will always be inherently flawed policy instruments.