| --- |
| license: cc-by-4.0 |
| pretty_name: PolyCI |
| tags: |
| - continuous-integration |
| - software-engineering |
| - mining-software-repositories |
| - devops |
| - ci-services |
| size_categories: |
| - 100M<n<1B |
| configs: |
| - config_name: CI_SERVICES |
| data_files: data/CI_SERVICES.parquet |
| - config_name: EXISTENCE_CHECK |
| data_files: data/EXISTENCE_CHECK.parquet |
| - config_name: YML_STATS |
| data_files: data/YML_STATS.parquet |
| - config_name: REPO_DETAILS |
| data_files: data/REPO_DETAILS.parquet |
| - config_name: REPO_METRICS |
| data_files: data/REPO_METRICS.parquet |
| - config_name: CI_REPO_CONTRIBUTORS |
| data_files: data/CI_REPO_CONTRIBUTORS.parquet |
| - config_name: COMMITS_PER_CI_FILES |
| data_files: data/COMMITS_PER_CI_FILES.parquet |
| - config_name: REPO_COMMIT_DETAILS |
| data_files: data/REPO_COMMIT_DETAILS/*.parquet |
| - config_name: EXPLANATORY_CI_COMMITS |
| data_files: data/EXPLANATORY_CI_COMMITS.parquet |
| --- |
| |
| # PolyCI |
|
|
| PolyCI is a cross-service, cross-language, longitudinal dataset of continuous |
| integration (CI) use in open-source software. It contains **135,189 repositories** |
| adopting one or more of **eight CI services** (GitHub Actions, Travis CI, CircleCI, |
| GitLab CI, AppVeyor, Azure Pipelines, Bitbucket Pipelines, Cirrus CI), across |
| **seven languages** (C, C++, Go, Java, Python, Ruby, Rust), from **2008 to 2025**. |
| Every table is keyed by the GitHub `repo_name` (`owner/repo`), so project, service, |
| and commit levels join directly. |
|
|
| Each data type below merges its per-language source files into a single parquet |
| carrying a lowercase `language` column that identifies the source language. The |
| one exception is `REPO_COMMIT_DETAILS` (167 M rows): it is split into one |
| parquet per language to keep every file relatively small, and each file keeps |
| the same `language` column. |
|
|
| ## Tables |
|
|
| | Config (`config_name`) | Grain | What it holds | |
| |---|---|---| |
| | `CI_SERVICES` | one row per CI-using repo | which CI services a repo declares, a per-service presence flag, and the service count | |
| | `EXISTENCE_CHECK` | repo x service | whether each declared CI configuration `still_exists` (basis for abandonment) | |
| | `YML_STATS` | repo x service | number of workflow/config YAML files and total YAML lines | |
| | `REPO_DETAILS` | one row per repo | GitHub metadata: stars, forks, size, timestamps, license, topics, description | |
| | `REPO_METRICS` | one row per repo | commit, pull-request, issue, and contributor counts | |
| | `CI_REPO_CONTRIBUTORS` | repo x contributor | contributor login, account `type`, and contribution count | |
| | `COMMITS_PER_CI_FILES` | commit that edits a CI file | commit and parent SHA, message, author/committer, dates for every commit touching a CI configuration file | |
| | `REPO_COMMIT_DETAILS` | commit | the full commit history of each repo (SHA, parent SHA, message, author/committer, dates) | |
| | `EXPLANATORY_CI_COMMITS` | commit | CI commit messages annotated with `multi_ci` and `abandoned` flags | |
|
|
| ## Loading |
|
|
| ```python |
| from datasets import load_dataset |
| |
| ci = load_dataset("taher-ghaleb/PolyCI", "CI_SERVICES", split="train") |
| ``` |
|
|
| Or read a single table directly with pandas / DuckDB: |
|
|
| ```python |
| import duckdb |
| duckdb.sql("SELECT language, count(*) FROM 'data/CI_SERVICES.parquet' GROUP BY 1") |
| ``` |
|
|
| ## Scope and known boundaries |
|
|
| - Detection is path-based: a table records a *declared* CI configuration, not |
| executed builds. A configuration still present is not proof it still runs, so |
| the abandonment signal is a lower bound. |
| - `COMMITS_PER_CI_FILES` and `REPO_COMMIT_DETAILS` give commit and parent SHAs |
| and messages, but **not** the list of files changed per commit, and there is |
| **no pull-request identifier**. Studies that need same-commit file co-change or |
| PR-level grouping resolve the provided SHAs to file lists (GitHub API or a local |
| clone) and map commits to PRs themselves. |
| - The dataset excludes private repositories, forks, and projects below five |
| stars. It generalizes to visible, active open-source development, not to GitHub |
| as a whole (see Kalliamvakou et al., 2016, on the perils of mining GitHub). |
| - Commit records include author and committer names and emails as they appear in |
| public git history. Do not use these fields to identify or contact individuals. |
|
|
|
|
| ## Citation |
|
|
| ```bibtex |
| @misc{polyci2027ghaleb, |
| title = {PolyCI: A Large-Scale Longitudinal Multi-Service Dataset of Continuous Integration Adoption}, |
| author = {Ghaleb, Taher A.}, |
| year = {2026}, |
| howpublished = {\url{https://huggingface.co/datasets/taher-ghaleb/PolyCI}} |
| } |
| ``` |
|
|
