Everyday, we engage in the use of networked information systems and websites to search for information. Whatever information users search for, it is highly possible that it can be found somewhere in the digital world. But, oftentimes, searching for information is neither effective nor efficient. When a user searches for information, a system often returns a large number of irrelevant results. Thus, the critical issue facing the current digital world is not the lack of information, but ill-structured information and inefficient information retrieval.This study concerned the testing of user...