Google拼写和Amazon推荐系统 - 北京大学网络与信息系统研究所.pptVIP

预测与惩罚，不是因为“所做”，而是因为“将做”。 这是电影《少数派报告》开始时的场景，这部电影描述的是一个未来可以准确预知的世界，而罪犯在实施犯罪前就已受到了惩罚。 /title/tt0181689/ The films central theme is the question of free will versus determinism. Stars: ?Tom Cruise * AJAX AJAX = Asynchronous JavaScript and XML（异步的 JavaScript 和 XML）。 AJAX 不是新的编程语言，而是一种使用现有标准的新方法。 AJAX 是与服务器交换数据并更新部分网页的艺术，在不重新加载整个页面的情况下。 * I think there is a world market for about five computers —Remark attributed to Thomas J. Watson (Chairman of the Board of International Business Machines), 1943 * App Engine is a platform as a service that uses familiar technologies to build and host applications on the same infrastructure used at Google. Salesforce是创建于1999年3月的一家客户关系管理（?CRM?）软件服务提供商，宣称可提供随需应用的客户关系管理(On-demandCRM), 其产品家族基于 sforce 客户 / 服务整合平台，允许客户与独立软件供应商定制并整合其产品，同时建立他们各自所需的应用软件。对于用户而言,则可以避免购买硬件、开发软件等前期投资以及复杂的后台管理问题。 * 约翰·冯·诺依曼（ John von Neumann，1903－1957）. 他的精髓贡献是：2进制思想与程序内存思想。 /wiki/MapReduce MapReduce?is a?programming model?for processing large data sets with a?parallel,?distributed?algorithm on acluster.[1 * / * /cloud-compute-quarter-hour-amazon-aws-ec2-rackspace/ What can the two largest cloud providers give users for $0.25/ hour? We are excluding other costs such as storage and bandwidth and focused solely on compute. ?Each Rackspace instance was powered by an AMD Opteron 4170 HE, a two generations old predecessor to the?AMD Opteron 4376 HE?processor we recently benchmarked. The Amazon EC2 instance line-up was the same as last time. Here is a compute, RAM and cost breakdown. Note we are using a 730 hour month to calculate the?monthly?costs. * /main/topic/56904-cloud-storage-war-in-china/ * P124@Big Data 物联网是一种典型的数据化手段，试图在一切生活中的事物中都植入芯片、传感器和通信模块。 /wiki/Internet_of_Things The?Internet of Things?(or?IoT?for short) refers to uniquely identifiable objects and their virtual representations in an?Internet-like structure. The term Internet of Things was proposed by?Kevin Ashton?in 1999.[1]The concept of the Internet of Things first became popular through the?Auto-I