"Software fault localization is one of the most expensive activities in program debugging. It can be further divided into two major parts. The first part is to use a technique to identify suspicious code that may contain program bugs. The second part is for programmers to actually examine the identified code to decide whether it indeed contains bugs. Fault localization has historically been a manual task that has been recognized to be time consuming and tedious as well as prohibitively expensive, given the size and complexity of large-scale software systems today. Furthermore, manual fault localization relies heavily on the software developer's experience, judgment, and intuition to identify and prioritize code that is likely to be faulty. These limitations have led to a surge of interest in developing techniques that can partially or fully automate the localization of faults in software while reducing human input"-- Provided by publisher.