[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fzoF1qDkuGbjmEnwv40phFkVPqcRigd3SJMGOohavEx4":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":24,"type":25},[],"2025-06-12 22:30:01",199501757,[8,9,10,11],"需求量小,数量少","需求量大,数量多","需求量大,数量少","需求量小,数量多",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},5,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","work_44157076","新建作业20250605111825","长尾物品的特点为_____.( )",[21,26,35,44,53],{"answer":22,"createTime":5,"id":6,"options":23,"question":19,"source":24,"type":25},[],[8,9,10,11],"v1",0,{"answer":27,"createTime":5,"id":28,"options":29,"question":34,"source":24,"type":25},[],199501759,[30,31,32,33],"雅虎","谷歌","微软","施乐","最早公开使用协同过滤系统来解决信息过载问题的公司是_____.( )",{"answer":36,"createTime":5,"id":37,"options":38,"question":43,"source":24,"type":25},[],199501761,[39,40,41,42],"f:I×R→U","f:U×I→I","f:U×I→R","f:U×R→I","推荐系统关于用户U,物品I,相关度R之间的关系可用映射_____表示( )",{"answer":45,"createTime":5,"id":46,"options":47,"question":52,"source":24,"type":25},[],199501763,[48,49,50,51],"基于知识","基于内容","协同过滤","混合推荐","推荐系统根据用户A的相似用户的购买历史为A生成了推荐结果,这属于_____推荐( )",{"answer":54,"createTime":5,"id":55,"options":56,"question":61,"source":24,"type":25},[],199501765,[57,58,59,60],"新闻项目数量更多","项目的时效性更高","用户群体更多样化","项目的生命周期更长","新闻推荐于电商推荐相比,其特点在于_____.( )"]