[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$foR-4Srel7uYGY9d9k8z-z-FQ8pJXnD0AR7597jPAha0":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":23,"type":24},[],"2023-06-12 02:28:07",59179895,[8,9,10,11],"频繁模式挖掘","分类和预测","数据预处理","数据流挖掘",{"courseId":13,"courseImg":14,"courseName":15},"b4b52a687a5868922d9f4a0a67bbeed9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F48eba3395437dd881b1b9275a0ad1028.png","机器学习","将原始数据进行集成、变换、维度规约、数值规约是在以下哪个步骤的任务( )",[18,25,34,43,52,61,64,73,81,89],{"answer":19,"createTime":5,"id":20,"options":21,"question":22,"source":23,"type":24},[],59179890,[8,9,10,11],"将原始数据进行集成,变换,维度规约、数值规约是哪个步骤的任务","v1",0,{"answer":26,"createTime":5,"id":27,"options":28,"question":33,"source":23,"type":24},[],59179891,[29,30,31,32],"第一个","第二个","第三个","第四个","假设12个销售价格记录组已经排序如下:5, 10, 11, 13, 15, 35, 50, 55, 72, 92, 204, 215 使用如下每种方法将它们划分成四个箱.等频(等深)划分时,15在第几个箱子内( )",{"answer":35,"createTime":5,"id":36,"options":37,"question":42,"source":23,"type":24},[],59179892,[38,39,40,41],"数据归约","数据泛化","数据集成","最小最大规范化","数据规范化方法包括( )",{"answer":44,"createTime":5,"id":45,"options":46,"question":51,"source":23,"type":24},[],59179893,[47,48,49,50],"0.1","0.2","0.3","0.4","两组向量x={6,4,7,10,8},y={5,6,1,4,12}的协方差为( )",{"answer":53,"createTime":5,"id":54,"options":55,"question":60,"source":23,"type":24},[],59179894,[56,57,58,59],"1.34","1.43","0.35","0.57","已知某工厂车间工人的年终奖,其均值为34 349元,标准差为16 928元,对于观测值为57 000元,使用z-score方法对其进行规范化为( )",{"answer":62,"createTime":5,"id":6,"options":63,"question":16,"source":23,"type":24},[],[8,9,10,11],{"answer":65,"createTime":5,"id":66,"options":67,"question":72,"source":23,"type":24},[],59179896,[68,69,70,71],"S4, S5","S1, S4","S2, S5","S1, S5","给定一组二维样本S,S = {S1, S2, S3, S4, S5}= {(1,2),(3,0),(4,3),(5,7),(1,6)},在距离阈值d大于等于4、非邻点样本的阈值部分p大于等于3时的噪声数据为( )",{"answer":74,"createTime":5,"id":75,"options":76,"question":80,"source":23,"type":24},[],59179897,[77,78,58,79],"0.32","0.38","0.40","假定用于分析的数据包含属性age,数据元祖中age的值如下(按递增序):13,15,16,16,19,20,20,21,22,22,25,25,25,25,30,33,33,33,35,35,35,35,36,40,45,46,52,70.对age值35进行小数定标规范化转换,转换后的值为( )",{"answer":82,"createTime":5,"id":83,"options":84,"question":88,"source":23,"type":24},[],59179898,[58,85,86,87],"0.70","0.175","0.386","假定用于分析的数据包含属性age,数据元祖中age的值如下(按递增序):13,15,16,16,19,20,20,21,22,22,25,25,25,25,30,33,33,33,35,35,35,35,36,40,45,46,52,70.使用min-max规范化,将age值35转换d到[0.0,1.0]区间的值为( )",{"answer":90,"createTime":5,"id":91,"options":92,"question":96,"source":23,"type":24},[],59179899,[87,93,94,95],"0.225","0.412","0.179","假定用于分析的数据包含属性age,数据元祖中age的值如下(按递增序):13,15,16,16,19,20,20,21,22,22,25,25,25,25,30,33,33,33,35,35,35,35,36,40,45,46,52,70.已知age的标准偏差为12.94年,使用z-score规范化对age值35进行转换,转换后得到的值( )"]