计算机专业英语Unit-11-Data-Mining-and-Big-Data.ppt

,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,Computer English,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单击此处编辑母版标题样式,L o g o,Unit11 Data Mining and Big Data,Section A Data Mining,Background Knowledge,背景知识,近年来，数据挖掘引起了信息产业界的极大关注，其主要原因是存在大量数据，可以广泛使用，并且迫切需要将这些数据转换成有用的信息和知识。获取的信息和知识可以广泛用于各种应用，包括商务管理，生产控制，市场分析，工程设计和科学探索等。,New Words and Useful Expressions,trillion/trln/,百万兆,一百万的三次幂,;,无数,;,万亿,gigabyte/ggbat/,GB,相当于,109,个约一亿个字节的信息单位,terabyte/terbat/,TB,相当于,1012,个约一百万兆字节的信息单位,upload/plud/,加载，装载,massively/msvl/,大而重地,;,结实地,;,大规模地,fiercely/fsl/,猛烈地,;,激烈地,;,凶猛地,;,disparate/dsprt/,不同的,;,异类的,transactional/trnzknl/,交易的，业务的；,predict/prdkt/,预言,;,预报,;,预料,;,作预言,;,trend/trend/,趋势,方位,倾向,New Words and Useful Expressions,proactive/pruktv/,前瞻性的,scour/skau(r)/,遍历,similarity/smlrti/,类似,;,相像性,;,相仿性,;,类似性，相似物,;,aerospace/erspes/,航空宇宙,warehouse/werhas/,仓库,大商店,货栈,forecast/frkst/,预想,;,预报,;,预测,;,作预测,进行预报,bankruptcy/bkrpts/,破产,倒闭,;,完全丧失,;,彻底失败,default/dflt/,缺席,;,不履行,;,拖欠,computerized,计算机的,使用计算机的,有关计算机的,New Words and Useful Expressions,market segmentation,市场细分,customer churn,客户流失,fraud detection,欺诈检测,direct marketing,直接营销,interactive marketing,互动营销,market basket analysis,捆绑营销分析,sweep through,扫过，掠过,The Value of Data Mining,The amount of raw data stored in corporate databases is exploding.,Raw data by itself,however,does not provide much information.,companies need to rapidly turn these terabytes of raw data into significant insights into their customers and markets to guide their marketing,investment,and management strategies.,Data Warehouses,Data warehouses are used to consolidate data located in disparate databases.A data warehouse stores large quantities of data by specific categories so it can be more easily retrieved,interpreted,and sorted by users.,It has been predicted that every business will have a data warehouse within ten years.,The company benefits when meaningful trends and patterns are extracted from the data.,Data Mining Status,data mining is still in its infancy.,companies in a wide range of industries-including retail,finance,health care,manufacturing transportation,and aerospace-are already using data mining tools and techniques.,Data Mining Methods,pattern recognition technologies,statistical and mathematical techniques,Usage of Data Mining-Continue,Direct marketing-Identify which prospects should be included in a mailing list to obtain the highest response rate.,Interactive marketing-Predict what each individual accessing a Web site is most likely interested in seeing.,Market basket analysis-Understand what products or services are commonly purchased together;e.g.beer and diapers.,Trend analysis-Reveal the difference between typical customers this month and last.,The Evolution of Data Mining,Evolutionary Step,Business Question,Enabling Technology,Data Collection(1960s),What was my total revenue in the last five years?,computers,tapes,disks,Data Access(1980s),What were unit sales in New England last March?,faster and cheaper computers with more storage,relational databases,Data Warehousing and Decision Support,What were unit sales in New England last March?Drill down to Boston.,faster and cheaper computers with more storage,On-line analytical processing(OLAP),multidimensional databases,data warehouses,Data Mining,Whats likely to happen to Boston unit sales next month?Why?,faster and cheaper computers with more storage,advanced computer algorithms,