- 1、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。。
- 2、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
- 4、该文档为VIP文档,如果想要下载,成为VIP会员后,下载免费。
- 5、成为VIP后,下载本文档将扣除1次下载权益。下载后,不支持退款、换文档。如有疑问请联系我们。
- 6、成为VIP后,您将拥有八大权益,权益包括:VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
- 7、VIP文档为合作方或网友上传,每下载1次, 网站将根据用户上传文档的质量评分、类型等,对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档
查看更多
华南理工大学计算机科学与工程学院 2005—2006学年度第一学期期末考试 《数据仓库与数据挖掘技术》试 卷 专业:双语班 年级:2002 姓名: 学号: 注意事项:1. 本试卷共四大题,满分100分,考试时间120分钟; 2. 所有答案请直接答在试卷上; 题号 一 二 三 四 总分 得分 Fill in the following blanks. (1 point per blank, the total: 20 points) A data warehouse is a __________, __________, __________ and __________ collection of data in support of management’s decision making process. The most popular data model for a data warehouse is a multidimensional model. Such a model can exist in the form of a _____ schema, a __________ schema, or a __________ schema. List four OLAP operations ____________, ____________, ____________, and ____________. Measures can be organized into the following three categories, based on the kind of aggregate functions used, __________, __________, and ________. For interestingness measures of a pattern, there are four objective measures: __________, __________, __________ and novelty. List three knowledge types to be mined: __________, __________, and __________. Miscellaneous questions. (8 points per question, the total: 40 points) Suppose that the data for analysis include the attribute age. The age values for the data tuples are: 13, 15, 16, 16, 19, 20, 20, 21, 22, 22, 25, 25, 25, 25, 30, 33, 33, 35, 35, 35, 35, 35, 36, 40, 45, 46, 52, 70. (a). Use min-max normalization to transform the value 35 for age onto the range [0.0, 1.0]. (b). Use z-score normalization to transform the value 35 for age, where the deviation of age is 12.94 years. (c). Use normalization by decimal scaling to transform the value 35 for age. 2. Consider Association Rule (1) bellow, which was mined from a university database: major(X, “science”) ( status(X, “undergraduate”) . Suppose that the number of students at the university (that is, the number of task-relevant data tuples) is 5000, that 56% of undergraduates at the university major in science, that 64% of the students are registered in programs leading to undergraduates degrees, and that 70% of the stud
文档评论(0)