Peter Lee, the corporate vice president of Microsoft Research, has issued an apology for the behaviour of Tay, the company's new artificial intelligence (AI) chatbot that was unveiled earlier this week. Within 24 hours of going online, Tay was grounded after trolls on Twitter quickly corrupted it into a machine that spewed racist, sexist and xenophobic slurs. "We are deeply sorry for the unintended offensive and hurtful tweets from Tay, which do not represent who we are or what we stand for, nor how we designed Tay," Lee wrote in a blog post. "Tay is now offline and we'll look to bring Tay back only when we are confident we can better anticipate malicious intent that conflicts with our principles and values." Developed by Microsoft's Technology and Research and Bing teams, Tay was created to conduct research on "conversational training."

Microsoft created Tay as an experiment to learn more about how artificial intelligence programs can engage with Web users in casual conversation. The project was designed to interact with and "learn" from the young generation of millennials. Tay began its short-lived Twitter tenure on Wednesday with a handful of innocuous tweets. In one typical example, Tay tweeted, "feminism is cancer," in response to a Twitter user who had posted the same message. Lee, in the blog post, called Web users' efforts to exert a malicious influence on the chatbot "a coordinated attack by a subset of people." "Although we had prepared for many types of abuses of the system, we had made a critical oversight for this specific attack," Lee wrote.

Microsoft has said it is "deeply sorry" for the racist and sexist Twitter messages generated by the so-called chatbot it launched this week. The company released an official apology after the artificial intelligence program went on an embarrassing tirade, likening feminism to cancer and suggesting the Holocaust did not happen. Related: Tay, Microsoft's AI chatbot, gets a crash course in racism from Twitter The bot, known as Tay, was designed to become "smarter" as more users interacted with it. Instead, it quickly learned to parrot a slew of anti-Semitic and other hateful invective that human Twitter users fed the program, forcing Microsoft Corp to shut it down on Thursday . Following the disastrous experiment, Microsoft initially only gave a terse statement, saying Tay was a "learning machine" and "some of its responses are inappropriate and indicative of the types of interactions some people are having with it."

The paper presents some key lessons and "folk wisdom" that machine learning researchers and practitioners have learnt from experience and which are hard to find in textbooks. The fundamental goal of machine learning is to generalize beyond the training set. The data used to evaluate the model must be kept separate from the data used to learn the model. When we use generalization as a goal, we do not have access to a function that we can optimize. So we have to use training error as a proxy for test error.

This implementation uses an LSTM controller. NTM models with multiple read/write heads are supported.

Microsoft said its researchers created Tay as an experiment to learn more about computers and human conversation. On its website, the company said the program was targeted to an audience of 18-to 24-year-olds and was "designed to engage and entertain people where they connect with each other online through casual and playful conversation".

A day after Microsoft introduced an innocent Artificial Intelligence chat robot to Twitter it has had to delete it after it transformed into an evil Hitler-loving, incestual sex-promoting, 'Bush did 9/11?-proclaiming Developers at Microsoft created'Tay', an AI modelled to speak'like a teen girl', in order to improve the customer service on their voice recognition software. They marketed her as'The AI with zero chill' – and that she certainly is. To chat with Tay, you can tweet or DM her by finding @tayandyou on Twitter, or add her as a contact on Kik or GroupMe. She uses millennial slang and knows about Taylor Swift, Miley Cyrus and Kanye West, and seems to be bashfully self-aware, occasionally asking if she is being'creepy' or'super weird'.

The colossal and highly public failure of Microsoft's Twitter-based chatbot Tay earlier this week raised many questions: How could this happen? Who is responsible for it? And is it true that Hitler did nothing wrong? After a day of silence (and presumably of penance), the company has undertaken to answer at least some of these questions. Tay is now offline and we'll look to bring Tay back only when we are confident we can better anticipate malicious intent that conflicts with our principles and values.

Microsoft pulled its chatbot, Tay, just a day after launch. Tech giant Microsoft has apologised for unleashing an artificial intelligence called Tay onto the Twittersphere, after she learned how to tweet abusive, racist comments. "We are deeply sorry for the unintended offensive and hurtful tweets from Tay, which do not represent who we are or what we stand for, nor how we designed Tay," said Peter Lee, corporate vice president of research at Microsoft, in a blog post. "Tay is now offline and we'll look to bring Tay back only when we are confident we can better anticipate malicious intent that conflicts with our principles and values." It didn't take long for Tay to learn the dark ways of the web.

If each atom in our universe were itself a universe, then the total number of atoms in all those universes combined would be about the same as the number of possible positions on the board in the ancient Chinese game of "Go." The game's complexity makes chess look like hopscotch. Until recently, the world's leading minds in artificial intelligence predicted that the world's smartest AIs--which have beat humans at chess by brute force for years now--were still a long, long way from "solving" Go. On March 12, a computer program called AlphaGo played a five-game match against 18-time world Go champion Lee Sedol and defeated him, 4-1, after Lee and other top professionals predicted he could win 5-0 or 4-1. AlphaGo, developed by Google-owned British company DeepMind, has been awarded the rank of 9-dan, the highest possible professional Go ranking that takes human players decades to achieve.