| --- |
| license: apache-2.0 |
| task_categories: |
| - text-classification |
| language: |
| - en |
| tags: |
| - java |
| - compile-errors |
| - codenet |
| - education |
| pretty_name: CodeNet Java compile errors v2 |
| size_categories: |
| - 10K<n<100K |
| --- |
| |
| # CodeNet Java compile errors v2 |
|
|
| This is a **new, Java-only corpus** rebuilt from |
| [`iNeil77/CodeNet`](https://huggingface.co/datasets/iNeil77/CodeNet) (the Java |
| split, `status == "Compile Error"`). It is deliberately separate from |
| [`criyle/codenet-compile-errors`](https://huggingface.co/datasets/criyle/codenet-compile-errors), |
| which used the old `Main.java` convention and did not carry user/problem/date |
| metadata. |
|
|
| ## What is different |
|
|
| Each submission is written to the file name javac asks for — the single public |
| top-level class it declares, or `Main.java` when there is no such class or more |
| than one. Submissions that compile cleanly under that name are **file-name |
| artefacts**, not student errors; they are kept in `compiled_all.parquet` but |
| excluded from this dataset. |
|
|
| The source-name fix is why this corpus is smaller than the raw Compile Error |
| set: `18,465` of |
| `53,023` submissions compiled cleanly once the file was named |
| after the class. `34,555` still fail and are |
| the rows of this dataset. |
|
|
| ## Metadata for session grouping |
|
|
| Unlike the old dataset, each row keeps: |
|
|
| | Column | Meaning | |
| |---|---| |
| | `row_id` | stable `v2_<sid>` id | |
| | `sid`, `submission_id` | CodeNet submission id | |
| | `pid`, `problem_id` | CodeNet problem id | |
| | `uid`, `user_id` | CodeNet user id | |
| | `date`, `date_iso` | CodeNet submission time | |
| | `source_name` | file name used for the compile (`Foo.java` / `Main.java`) | |
| | `code`, `compilemessage` | source and javac stderr | |
| | `session_id` | `(uid, pid)` 2-hour session | |
| | `session_6h` | 6-hour variant | |
|
|
| `session_id` is a contiguous run of submissions by one user on one problem, |
| with a new session when the gap exceeds 2 hours. It is computed on the **full** |
| Java split (accepted submissions included), so a user's accepted submission |
| still closes the session boundary. |
|
|
| ## Labels |
|
|
| `category` is intentionally empty and `label_status` is `unlabelled`. The v2.1 |
| taxonomy (`categories.v2.yaml`) is included, but labelling is a separate LLM |
| pass with its own calibration gates. **No v1 labels are mixed into the `category` |
| column.** |
|
|
| ## Provenance |
|
|
| - source: `iNeil77/CodeNet`, Java split |
| - filter: `status == 'Compile Error'` |
| - sandbox: `http://10.0.0.162:5050` |
| - javac: `OpenJDK 21.0.12.1` |
| - session gap: `2 h` (`6 h` alternative) |
| - built at: `2026-10-20T02:28:07.997126+00:00` |
|
|
| ## Files |
|
|
| - `train` — the still-failing submissions (`corpus_v2.parquet`) |
| - `compiled_all.parquet` — every compile attempt, including file-name artefacts |
| - `session_map_all.parquet` — session map over the full Java split |
| - `categories.v2.yaml` — active v2.1 taxonomy |
| - `source_manifest.json` — counts, hashes and build parameters |
|
|
| ## Licence |
|
|
| CodeNet is Apache-2.0. This derived corpus is released under the same terms. |
|
|
