China's top internet watchdog said on Friday that tech giants such as Tencent and Alibaba have submitted details of algorithms used in some of their products, complying with a drive by authorities to tighten oversight of platform algorithms. The rules are part of a broad regulatory crackdown by Beijing against its once free-wheeling technology sector. State media had accused internet platforms of using algorithms to invade user privacy and influence their choices. The Cyberspace Administration of China (CAC) published a list of 30 algorithms used in some of the country's most popular apps, including Alibaba's Taobao, Tencent's Wechat, Meituan, and...