"Big Data" era unknown is also a good

Http://www.aliyun.com/zixun/aggregation/13814.html ">bigdata--large data, is undoubtedly the hot word on the Internet in recent years. More and more companies are starting to love big data, we also enjoy the convenience of large data.

When surfing the web, we can always see the product recommendation that hits our interest; open a Web page where the ad is a product of a recent purchase plan; search on the website, return the search page has a lot of valuable "related recommendations" ... When we don't realize it, smart devices are networked and data is quietly sent to third parties. Behind all this, is the network service provider to user's Internet behavior carries on the depth analysis the result, this can not be inseparable from the big data technical support. However, while the big data is convenient and quick, its weakness is becoming more and more of a matter of private concern. Data mining shows that the data integration and control power of human beings is far beyond the past.

In 1995, the European Union's privacy legislation defined "personal data" as information that could directly or indirectly identify a person. It was obvious that the legislators were thinking of documents with identification numbers. Today, the definition of "personal data" contains much more than the imagination of those legislators, and even the amount of data in the world when they passed the law 19 years ago. What happened during this period?

First, the world's annual volume of data is growing exponentially, and last year it reached 2.8ZB, a frightening figure, and, according to IDC, a well-known information industry consultancy, the figure will double in 2015. Second, 3/4 of these data are made by individuals who contribute to the creation or movement of digital files. For example, a standard American office worker can contribute 1.8 million MB of data a year. Although most of this data is invisible and does not seem to carry any personal information, it is not. Modern data science has found that almost any type of data can be used to identify the person who created it, and that every person in the real world is always portrayed in the information universe. There is no doubt that the more personal data is available, the greater the amount of information there is. As long as we have enough data, we may even find information about the future of a person.

Last year, Adam Sadic of the University of Rochester in the United States and engineers from the Microsoft Lab John Kram found that they could roughly predict where a person might arrive in the future, up to 80 weeks, with an accuracy of up to 80%. To that end, they collected GPS data from 307 people and 396 vehicles in 32,000 days and built a "massive dataset".

The two people imagined the commercial application of the research, saying that there would be such an advertisement: "Do you need a haircut?" in 4 days you will be within 100 metres of the salon, and there will be a special event. Big Data brings many conveniences, influences decisions, and changes life. But large data analysis and application sometimes deviate from its spiritual essence. Human is not a machine, life sometimes does not need to be very precise, unknown is a good.