Nvidia shares surge on signs of machine learning boom

(Reuters) - Shares of Nvidia Corp rose 6% on Friday after the chipmaker stunned analysts with strong quarterly results and joined rivals Intel Corp and Advanced Micro Devices Inc in predicting strong demand for chips used in the latest generation of data centres and AI.At least eleven brokerages hiked price targets on the company's stock. Brokerage Cowen & Company was the most bullish, raising its target by $85 to $325, higher than Wall Street's median price target of $285.15 and Friday's..