ResearchBenchmarksSearch Recommendation on Douyin Search ALL online A/B one month (test)Follow-0.0033Change Query RateMDL-0.004267-0.003767-0.003267-0.002767Feb 7, 2026Evaluation ResultsMethodMethodLinksChange Query RateLT30MDLScenario=ALLScenario=ALL2026.02-0.00330.0006