Survey on the Applications of Big Data in Chinese Real Estate Enterprise <s> Introduction <s> Delete: The Virtue of Forgetting in the Digital Age Viktor Mayer-Schonberger. Princeton, NJ: Princeton University Press, 2009. 237 pp. $24.95.There is a famous Indian parable of a group of blind men who are trying to describe an elephant. Each of the men is feeling a different part of the elephant, and based on what they feel, each gives a description of the animal, saying, variously, "The elephant is leathery and floppy," "The elephant is smooth and hard and curved," "The elephant is firm and low to the ground solid and has the diameter of a small tree," etc. Each accurately describes the portion of the elephant he is examining but fails to get a sense of the animal as a whole. This story comes to mind in considering Viktor Mayer-Schonberger's new book, Delete: The Virtue of Forgetting in the Digital Age. Mayer-Schonberger's concern is with a new problem posed by our use of electronic communication systems, and the fact that our communications are now typically stored, easily shared, and once shared, difficult to erase. Tracings of moments in our lives that represent who we were at one time and no longer are, or that reveal actions from an otherwise isolated context, now often have a permanent existence in the electronic environment that can compromise our ability to control our own lives. The interest in controlling what is remembered about us, as he presents it, akin to our interest in personal privacy (indeed, Mayer-Schonberger often writes about privacy in the book as though it is conceptually indistinct from the idea of deleting what we no longer want around). He touches on questions of power, in a limited way, in the sense that he is worried about the ability of the state or an employer or another group in power to adversely affect our lives based on personal information over which we have very limited control. An audience that has presumably been participating in Internet discussions or communities during the past decade should find this concern easy to understand.Mayer-Schonberger's argument for deleting information is narrow in scope. The book begins with an account of the history of recorded information as a linear progression from a lack of recorded memory to our present system of ubiquitous records, which, as he notes, collapses the present and the past. Following that historical overview is his exposition of the argument that society needs to rediscover the power of forgetting, mainly in the interest of protecting individual autonomy and to give us the freedom to grow. Finally there is a set of recommendations for regulatory and technological solutions to re-enable this social forgetting (e.g., electronic records that self-destruct after a certain period.)What is odd about the book is its apparent lapse of memory regarding prior discussions of memory and forgetting and "The Archive" (as scholars outside of archival studies have begun referring to the collective storehouse of recorded information). Mayer-Schonberger's primary oversight is his view that instituting social forgetting can be argued on the basis of the Enlightenment value of individual rights, when the problem posed by the need for forgetting is very much a postmodern challenge to such liberal values. For a scholar to argue for forgetting in liberal terms in the shadow of the atrocities of the twentieth century, which brought so much attention to cultural memory and the imperative to "never forget," is surprising. Some works come immediately to mind in Mayer-Schonberger's blind spot. Milan Kundera's The Book of Laughter and Forgetting is an example of a novel of ideas that deals with the problem of tension between the need to forget in order to move forward and the need for cultural memory for the sake of justice and reconciliation. As a corrective to Mayer-Schonberger's linear history of recorded information, which is a story of memories piling up, one could read Matthew Battles' recent Library: An Unquiet History, which chronicles the destruction of national libraries through the ages by new regimes that wanted to wipe out all traces of the old. … <s> BIB001 </s> Survey on the Applications of Big Data in Chinese Real Estate Enterprise <s> Introduction <s> Compared with traditional data warehouse applications,big data analytics are huge and complex.To design a favorable architecture for big data analytics,this paper lists some key features for big data analytics,summarizes current main implementation platforms(parallel databases,MapReduce,and hybrid architectures based on them),and points their pros and cons.Some current researches are also investigated,our work are introduced and some challenging research problems in the future are discussed. <s> BIB002
The explosion of data volume fueled by stunning and exciting advances in the computer technology and Internet techniques made the big data the focus of widespread attention. As early as 2000, in the first few weeks of Sloan Digital Sky Survey the data size observed by telescope in New Mexico is bigger than that has been collected in the entire history of astronomy. Big data almost derives its origin from astronomy  . In addition to natural science such as astronomy, biomedicine, geoinformatics and other fields easily accompanied by enormous data volume, big data is widely known in social life. Especially in recent years, the appearance of cloud computing and the IOT speed up the arrival of "the era of big data". It says that Google and Baidu have to deal with dozens of petabytes every day; there is a video length of over one hour released on the YouTube per second; there are more than one billion Facebook accounts uploading almost ten million photos every day with "like" and comment up to billions; Taobao generates about 20TB data every day with over 35 billion transactions on November 11th  BIB001 BIB002  . This size of data is far away from the perception we had in pre-information-era society. In addition, there are more and more personal information controlled by banking and financial industry or some telecommunications industry; industrial data collected by pervasive sensors also rises sharply. As the CBC Capital chairman Tian Suning puts it, "Now, an age of mass production, sharing and application in big data is approaching."  There is no doubt that data resources are crucial in the age of big data. A number of enterprises have gained excellent decision making capabilities and immeasurable economic benefits through valuable information produced by data mining. In order to keep Chinese economic development in a sustainable, sound and rapid manner, it is very important for real estate enterprises to take full advantage of big data because of the status of real estate industry as a pillar industry of the national economy. Especially when property prices continue upward or property bubble inflation involves the national economy and people's livelihood, those real estate enterprises should make effective use of big data to tap the potentials. Solving the problems in applications on Big data, improving the abilities of investment and marketing, the estate will be able to keep playing a fundamental guiding role in national economy.