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Our prior work showed that the majority of error-prone source files in a software system are architecturally connected. Flawed architectural relations propagate defectsamong these files and accumulate high maintenance costs over time, just like debts accumulate interest. We model groups of architecturally connected files that accumulate high maintenance costs as architectural debts. To quantify such...
Despite decades of research on software metrics, we still cannot reliably measure if one design is more maintainable than another. Software managers and architects need to understand whether their software architecture is "good enough", whether it is decaying over time and, if so, by how much. In this paper, we contribute a new architecture maintainability metric---Decoupling Level (DL)---derived...
Recently there has been increased attention to the consequences of architecture design decisions and their impact on security. Architectural design decisions have been identified as being critical for achieving high levels of software system security. However the majority of this research has been anecdotal and there are few tools or methods for understanding the architectural relations among files,...
In this paper, we propose and empirically validate a suite of hotspot patterns: recurring architecture problems that occur in most complex systems and incur high maintenance costs. In particular, we introduce two novel hotspot patterns, Unstable Interface and Implicit Cross-module Dependency. These patterns are defined based on Baldwin and Clark's design rule theory, and detected by the combination...
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