The principle of Bug Clustering states that the majority of defects are often concentrated in a small number of modules or components of a software system. It can be seen as an application of the Pareto Principle or the 80/20 Rule in the context of software testing.
Bugs are not uniformly distributed throughout the software. Instead, a disproportionately large number of defects "cluster" in a small percentage of the code.
The 80/20 Rule: Empirically, it is often observed that approximately 80% of the defects in a software application are found in only 20% of the modules.
This clustering usually occurs in high complexity areas, such as, modules with intricate business logic, numerous interdependencies, or complex algorithms are harder to test and maintain, making them more prone to error.
Bug clustering can also happen due to code that is frequently modified, updated, or undergoing new feature development tends to introduce new bugs more often and in areas that rely on third-party libraries or old, poorly documented codebases.
Bugs are not uniformly distributed throughout the software. Instead, a disproportionately large number of defects "cluster" in a small percentage of the code.
The 80/20 Rule: Empirically, it is often observed that approximately 80% of the defects in a software application are found in only 20% of the modules.
This clustering usually occurs in high complexity areas, such as, modules with intricate business logic, numerous interdependencies, or complex algorithms are harder to test and maintain, making them more prone to error.
Bug clustering can also happen due to code that is frequently modified, updated, or undergoing new feature development tends to introduce new bugs more often and in areas that rely on third-party libraries or old, poorly documented codebases.
