No game-changing innovation is garnering more attention on Wall Street this year than artificial intelligence (AI).

AI involves the use of software and systems to handle tasks typically assigned to humans. The key is the incorporation of machine learning (ML), which allows software and systems to "learn" and evolve over time. This evolution is expected to add $15.7 trillion to the global economy by 2030, according to a report by PwC. 

The innovative potential and big-dollar figures behind AI have attracted plenty of attention from Wall Street's most successful money managers -- and that includes billionaire CEO Warren Buffett of Berkshire Hathaway (NYSE: BRK.A)(NYSE: BRK.B), along with his investment team. Nearly half of Berkshire's $365 billion portfolio is invested in three AI stocks.

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Source Fool.com