Major Chinese internet platforms have vowed to improve their algorithms, after the mainland’s internet watchdog launched a campaign to address the misuse of the technology underpinning the recommendation functions of apps and websites.ByteDance’s TikTok alternative for its home market, Douyin, said on Friday it would establish a safety centre this year to make its recommendation system more transparent. It will also provide a more diverse video feed and strengthen its crackdown on misinformation...