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4、of top impact features to bring intelligent searching experience on BingPlaced at the top position of the Bing search result pageBing Question-and-Answering Feature Provide short,direct but precise answer when users search for info.on BingOne of top impact features to bring intelligent searching exp
5、erience on BingPlaced at the top position of the Bing search result pageGeneric Passage(68%)List(20%)Table(2%)What is Bing QnA?Passage QnA(90%)Knowledge-base QnA(10%)Bing QnA Approaches OverviewApproach 1:Knowledge Base QnAApproach 1:Knowledge Base QnAquery understanding structured query(e.g.SPARQL)
6、graph search factLimitation:hard dependencies on QU capability and KB coverageApproach 2:Passage QnAApproach 2:Passage QnAweb search for relevant documents MRC for relevant passage and answer span extractionAdvantages:high coverage&applicable to various question typesBing Passage QnA Ranking Systems