I. Introduction
It is obvious that it comes to an information explosion era, in which human knowledge has been accumulated to a peak level. Accordingly, the emerging big-data paradigm, owing to its broader impact, has attracted diverse attentions from both technological experts and the public in general [1]. Meanwhile, there is more emphasis on innovation as it is the key role of being successful in this extremely competitive market, because there are always multiple products or services striving to serve the users in the same domain [2], [3]. Knowledge is always the foundation of innovative ideas for both products and services. It is observed that knowledge combination presently can be a way of innovating new products and new services on various domains. A well-known example is Apple's iPhone, considered as a game-changing product, which merged many technical knowledge items, for instance, virtual keyboard, with the knowledge of traditional mobile phone. Over the last few years, the introduction of the iPhone has subverted the smartphone market. Traditional mobile phone companies, even the giants like Nokia and Motorola, have been forced to make huge changes and many new smartphone companies have arisen following iPhone's trend. Further, it is not only leading the trend of the mobile phone industry but also affected the computer market seriously. Sales on various brands have suffered different degrees of declining in recent years, while millions applications are available for iPhone that allow users to do all kinds of tasks in this pocket size device.