(Adds details, shares, background)
July 27 (Reuters) - China's Baidu Inc reported an 83.5 percent rise in quarterly profit, as the company shows signs of a recovery after the crackdown on its core ad business by Chinese regulators last year.
The company's U.S.-listed shares rose 6.9 percent to $215 in extended trading on Thursday.
Baidu said it expects third-quarter revenue of 23.13 billion yuan ($3.43 billion) to 23.75 billion yuan.
The Chinese internet search company has been focusing on expanding its autonomous driving platform, investing in artificial intelligence and developing cloud and big data capabilities as part of a wider re-shuffle of its core business.
Earlier this month the company partnered with Ford Motor Co and Nvidia Corp to promote its self-driving car platform Apollo.
Baidu's revenue in the second quarter rose 14.3 percent to 20.87 billion yuan. That growth is above a Thomson Reuters survey of 13 analysts who estimated a 13.8 percent rise.
Net income rose to 4.41 billion yuan in the quarter ended June 30 from 2.40 billion yuan a year earlier.
In May, last year, China's internet regulator sent a team to investigate Baidu over the death of a university student, Wei Zexi, who used the Chinese search engine to look for treatment for his cancer.
($1 = 6.7410 Chinese yuan renminbi) (Reporting by Laharee Chatterjee in Bengaluru; Editing by Shounak Dasgupta)