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Business Intelligence (BI) has proven to be a competitive advantage for organizations, allowing them to better measure, manage, and optimize their operations. It has provided the means to improve data-driven decision making and to harmonize an ...

In the mid 1990s, I was (tangentially) part of an effort in Bell Labs called the “Code Decay” project. The hypothesis of this project was that over time code becomes fragile (more difficult to change without introducing problems), and that this process ...

We are now witnessing the rapid growth of decentralized source code management (DSCM) systems, in which every developer has her own repository. DSCMs facilitate a style of collaboration in which work output can flow sideways (and privately) between ...

The source code and its history represent the output and process of software development activities and are an invaluable resource for study and improvement of software development practice. While individual projects and groups of projects have been ...

Researchers continue to demonstrate the benefits of Mining Software Repositories (MSR) for supporting software development and research activities. However, as the mining process is time and resource intensive, they often create their own distributed ...

Research in the fields of software quality, maintainability and evolution requires the analysis of large quantities of data, which often originate from open source software projects. Collecting and preprocessing data, calculating metrics, and ...

In spite of the widespread use of coding standards and tools enforcing their rules, there is little empirical evidence supporting the intuition that they prevent the introduction of faults in software. In previous work, we performed a pilot study to ...

Defect prediction is an important task in the mining of software repositories, but the quality of predictions varies strongly within and across software projects. In this paper we investigate the reasons why the prediction quality is so fluctuating due ...

Previous studies have shown that software code attributes, such as lines of source code, and history information, such as the number of code changes and the number of faults in prior releases of software, are useful for predicting where faults will ...

Automated software engineering tools (e.g., program search, concern location, code reuse, quality assessment, etc.) increasingly rely on natural language information from comments and identifiers in code. The first step in analyzing words from ...

Source code cloning does not happen within a single system only. It can also occur between one system and another. We use the term code sibling to refer to a code clone that evolves in a different system than the code from which it originates. Code ...

We present the results of a study in which author entropy was used to characterize author contributions per file. Our analysis reveals three patterns: banding in the data, uneven distribution of data across bands, and file size dependent distributions ...

The lifecycle of defects reports and enhancement requests collected in the Bugzilla database of the GNOME project provides valuable information on the evolution of the change request process and for the assessment of process quality in the GNOME sub ...

We adapt Latent Dirichlet Allocation to the problem of mining bug reports in order to define a new information-theoretic measure of coherence. We then apply our technique to a snapshot of the GNOME Bugzilla database consisting of 431,863 bug reports for ...

We analyzed the Gnome family of systems with the Small Project Observatory, our online ecosystem visualization platform. We begin by briefly introducing the model of SPO. We then observe and discuss several phases in the activity of the Gnome ecosystem. ...

Developers of open source projects are distributed across the world. They rely on email, mailing lists, instant messaging, IRC channels and more recently IRC meetings to communicate. Most of the studies thus far focus on the use of mailing lists by OSS ...

We present a topic modeling analysis of a year long usage log of Koders, one of the major commercial code search engines. This analysis contributes to the understanding of what users of code search engines are looking for. Observations on the prevalence ...

Developers take notes about their work sessions, either to remember the work status and share it with collaborators, or because employers explicitly require this for project management matters. We report on an exploratory study which aims at ...

For popular software systems, the number of daily submitted bug reports is high. Triaging these incoming reports is a time consuming task. Part of the bug triage is the assignment of a report to a developer with the appropriate expertise. In this paper, ...

When software repositories are mined, two distinct sources of information are usually explored: the history log and snapshots of the system. Results of analyses derived from these two sources are biased by the frequency with which developers commit ...