Baidu Inc. reported a smaller-than-expected revenue drop, alleviating concerns its internet search and artificial intelligence businesses are buckling under fierce competition.Revenue for the three months ended December shrankBloomberg Terminal 2% to 34.1 billion yuan ($4.7 billion), versus an average estimate of 33.4 billion yuan. Net income for the same period came to 5.2 billion yuan, compared with a projected 3.92 billion yuan....