[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$flVOddjw1PuDQXj3JWFZetftW2M9gV770CTpGBD268WA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":27,"type":28},[],"2023-06-12 02:28:07",59179899,[8,9,10,11],"0.386","0.225","0.412","0.179",{"courseId":13,"courseImg":14,"courseName":15},"b4b52a687a5868922d9f4a0a67bbeed9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F48eba3395437dd881b1b9275a0ad1028.png","机器学习","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( )",[18,29,38,47,56,65,70,79,87,94],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],59179890,[22,23,24,25],"频繁模式挖掘","分类和预测","数据预处理","数据流挖掘","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":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":28},[],59179891,[33,34,35,36],"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":39,"createTime":5,"id":40,"options":41,"question":46,"source":27,"type":28},[],59179892,[42,43,44,45],"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":48,"createTime":5,"id":49,"options":50,"question":55,"source":27,"type":28},[],59179893,[51,52,53,54],"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":57,"createTime":5,"id":58,"options":59,"question":64,"source":27,"type":28},[],59179894,[60,61,62,63],"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":66,"createTime":5,"id":67,"options":68,"question":69,"source":27,"type":28},[],59179895,[22,23,24,25],"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( )",{"answer":71,"createTime":5,"id":72,"options":73,"question":78,"source":27,"type":28},[],59179896,[74,75,76,77],"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":80,"createTime":5,"id":81,"options":82,"question":86,"source":27,"type":28},[],59179897,[83,84,62,85],"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":88,"createTime":5,"id":89,"options":90,"question":93,"source":27,"type":28},[],59179898,[62,91,92,8],"0.70","0.175","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":95,"createTime":5,"id":6,"options":96,"question":16,"source":27,"type":28},[],[8,9,10,11]]