"Jeff took a deep breath to calm down. He was about to stand in front of the employees of the Happy Face Toy Company's faltering Cleveland factory. As the new CEO, he'd been advised to close this factory as soon as possible, but he wanted to see it first. "How hard could this be?" he wondered,...

The rapid growth of unstructured data, commonly denoted as the Big Data challenge, requires new technologies that are capable of dealing with complex data objects such as multimedia. In this work, the authors focus on the content-based retrieval approach, which is able to organize such data by...