Introducing Recommenders This chapter covers: What recommender are, within Mahout A first look at a Recommender in action Evaluating accuracy and quality of recommender engines Evaluating a recommender on a real data set: GroupLens 39186 Eac...

UNDERSTANDING THE MAP-REDUCE PROGRAMMING MODEL AND SYSTEM When talking about Map-Reduce, one may mean the Map-Reduce programming model (the narrow sense), or the Map-Reduce system (the wider sense) that provides the support for the programmi...

Error Handling with Exceptions The basic philosophy of Java is that badly formed code will not be run.The ideal time to catch an error is at compile time, before you even try to run the program.However, not all errors can be detected at comp...

Application Design and Development Practically all use of databases occurs from within application programs. Correspondingly, almost all user interaction with databases is indirect, via application programs. Not surprisingly, therefore, data...

Cloud Computing This month, there is a hot word - cloud! Qihoo 360 fignt with tencent on the internet, lead many people to hear about the cloud killing, cloud security. For investors, the recent one month if the stock has been holding cloud...

Language Overvie As we stated earlier,Java is based on C++ but was specifically designed to be smaller,simpler,and more reliable. Java has both types and classes. The primitive types are not objects based on classes. These include all of its...

Management innovation in the hotel industry The study of management innovation has gained relevance in recent years, but there is a lack of empirical research analysing the factors that favour it. This article contemplates two types of antec...

MVC Design Pattern and Spring, Struts Framework I. INTRODUCTION The model view controller (MVC) is a fundamental design pattern for the separation between user interface logic and business logic. Since applications are very large in size the...

JavaScript Console Every browser has different developer tools, some are similar and some quite different but one similarity that all browsers have is the JavaScript Console. This is where all errors are logged, but it is often much more pow...

ASP.NET and the .NET Framework ASP.NET is part of Microsofts overall .NET framework, which contains a vast set of programming classes designed to satisfy any conceivable programming need.40838 The .NET Framework Class Library Imagine that yo...