| | --- |
| | dataset_info: |
| | - config_name: go-v1-hard-negatives-100k |
| | features: |
| | - name: query |
| | dtype: string |
| | - name: pos |
| | dtype: string |
| | - name: negs |
| | list: string |
| | splits: |
| | - name: train |
| | num_examples: 87536 |
| | - config_name: go-v1-pair-2M |
| | features: |
| | - name: query |
| | dtype: string |
| | - name: pos |
| | dtype: string |
| | splits: |
| | - name: train |
| | num_examples: 1532319 |
| | - config_name: java-v1-hard-negatives-100k |
| | features: |
| | - name: query |
| | dtype: string |
| | - name: pos |
| | dtype: string |
| | - name: negs |
| | list: string |
| | splits: |
| | - name: train |
| | num_examples: 80906 |
| | - config_name: java-v1-pair-2M |
| | features: |
| | - name: query |
| | dtype: string |
| | - name: pos |
| | dtype: string |
| | splits: |
| | - name: train |
| | num_examples: 1456651 |
| | - config_name: javascript-v1-hard-negatives-100k |
| | features: |
| | - name: query |
| | dtype: string |
| | - name: pos |
| | dtype: string |
| | - name: negs |
| | list: string |
| | splits: |
| | - name: train |
| | num_examples: 79484 |
| | - config_name: javascript-v1-pair-2M |
| | features: |
| | - name: query |
| | dtype: string |
| | - name: pos |
| | dtype: string |
| | splits: |
| | - name: train |
| | num_examples: 1298745 |
| | - config_name: php-v1-hard-negatives-100k |
| | features: |
| | - name: query |
| | dtype: string |
| | - name: pos |
| | dtype: string |
| | - name: negs |
| | list: string |
| | splits: |
| | - name: train |
| | num_examples: 74945 |
| | - config_name: php-v1-pair-2M |
| | features: |
| | - name: query |
| | dtype: string |
| | - name: pos |
| | dtype: string |
| | splits: |
| | - name: train |
| | num_examples: 1311302 |
| | - config_name: python-v1-hard-negatives-100k |
| | features: |
| | - name: query |
| | dtype: string |
| | - name: pos |
| | dtype: string |
| | - name: negs |
| | list: string |
| | splits: |
| | - name: train |
| | num_examples: 96670 |
| | - config_name: python-v1-pair-2M |
| | features: |
| | - name: query |
| | dtype: string |
| | - name: pos |
| | dtype: string |
| | splits: |
| | - name: train |
| | num_examples: 1779891 |
| | - config_name: ruby-v1-hard-negatives-100k |
| | features: |
| | - name: query |
| | dtype: string |
| | - name: pos |
| | dtype: string |
| | - name: negs |
| | list: string |
| | splits: |
| | - name: train |
| | num_examples: 67937 |
| | - config_name: ruby-v1-pair-2M |
| | features: |
| | - name: query |
| | dtype: string |
| | - name: pos |
| | dtype: string |
| | splits: |
| | - name: train |
| | num_examples: 1145414 |
| | configs: |
| | - config_name: go-v1-hard-negatives-100k |
| | data_files: |
| | - split: train |
| | path: go-v1-hard-negatives-100k/train-* |
| | - config_name: go-v1-pair-2M |
| | data_files: |
| | - split: train |
| | path: go-v1-pair-2M/train-* |
| | - config_name: java-v1-hard-negatives-100k |
| | data_files: |
| | - split: train |
| | path: java-v1-hard-negatives-100k/train-* |
| | - config_name: java-v1-pair-2M |
| | data_files: |
| | - split: train |
| | path: java-v1-pair-2M/train-* |
| | - config_name: javascript-v1-hard-negatives-100k |
| | data_files: |
| | - split: train |
| | path: javascript-v1-hard-negatives-100k/train-* |
| | - config_name: javascript-v1-pair-2M |
| | data_files: |
| | - split: train |
| | path: javascript-v1-pair-2M/train-* |
| | - config_name: php-v1-hard-negatives-100k |
| | data_files: |
| | - split: train |
| | path: php-v1-hard-negatives-100k/train-* |
| | - config_name: php-v1-pair-2M |
| | data_files: |
| | - split: train |
| | path: php-v1-pair-2M/train-* |
| | - config_name: python-v1-hard-negatives-100k |
| | data_files: |
| | - split: train |
| | path: python-v1-hard-negatives-100k/train-* |
| | - config_name: python-v1-pair-2M |
| | data_files: |
| | - split: train |
| | path: python-v1-pair-2M/train-* |
| | - config_name: ruby-v1-hard-negatives-100k |
| | data_files: |
| | - split: train |
| | path: ruby-v1-hard-negatives-100k/train-* |
| | - config_name: ruby-v1-pair-2M |
| | data_files: |
| | - split: train |
| | path: ruby-v1-pair-2M/train-* |
| | license: apache-2.0 |
| | --- |
| | # cornstack-samples |
| |
|
| | 🚧 This dataset is under active development and may change. |
| |
|
| | Filtered CoRNStack sample subsets for code retrieval training. |
| |
|
| | Source dataset and paper: |
| | - CoRNStack collection: https://huggingface.co/collections/nomic-ai/cornstack |
| | - CoRNStack paper: https://huggingface.co/papers/2412.01007 |
| |
|
| | Note: the original CoRNStack collection is a much larger dataset family for code search training. |
| | If you need large-scale data (not samples), please refer to the original CoRNStack collection above. |
| |
|
| | ## What This Release Contains |
| |
|
| | This release keeps the original subset layout (6 languages x pair + hard-negatives) and applies deterministic rule-based filtering. |
| |
|
| | In this revision, query-level deduplication and positive-document (`pos`) deduplication are applied per subset. |
| | For both rules, if duplicates exist, only the first row is kept. |
| |
|
| | ## Config Layout And Schema |
| |
|
| | Each language is published as two configs with split `train`: |
| | - `{lang}-v1-pair-2M` |
| | - `{lang}-v1-hard-negatives-100k` |
| |
|
| | Schema: |
| | - Pair configs: `query`, `pos` |
| | - Hard-negative configs: `query`, `pos`, `negs` (list[string]) |
| |
|
| | ## Subsets And Row Counts (After Filter + Query Dedup + Pos Dedup) |
| |
|
| | Note: subset names keep the original `2M` / `100k` naming convention for compatibility, but |
| | actual row counts vary by language and can be substantially lower after quality filtering and |
| | deduplication. |
| |
|
| | | Subset (config name) | split | num_examples | |
| | | --- | --- | ---: | |
| | | `go-v1-pair-2M` | `train` | 1,532,319 | |
| | | `go-v1-hard-negatives-100k` | `train` | 87,536 | |
| | | `java-v1-pair-2M` | `train` | 1,456,651 | |
| | | `java-v1-hard-negatives-100k` | `train` | 80,906 | |
| | | `javascript-v1-pair-2M` | `train` | 1,298,745 | |
| | | `javascript-v1-hard-negatives-100k` | `train` | 79,484 | |
| | | `php-v1-pair-2M` | `train` | 1,311,302 | |
| | | `php-v1-hard-negatives-100k` | `train` | 74,945 | |
| | | `python-v1-pair-2M` | `train` | 1,779,891 | |
| | | `python-v1-hard-negatives-100k` | `train` | 96,670 | |
| | | `ruby-v1-pair-2M` | `train` | 1,145,414 | |
| | | `ruby-v1-hard-negatives-100k` | `train` | 67,937 | |
| | |
| | Total rows: |
| | - Pair: 8,524,322 |
| | - Hard-negatives: 487,478 |
| | - Overall: 9,011,800 |
| | |
| | ## Dedup Impact (Pos Dedup Stage) |
| | |
| | The table below shows the `pos`-dedup impact on top of the previous filtered + query-deduped data. |
| | |
| | | Subset | before | after | removed | removed_ratio | |
| | | --- | ---: | ---: | ---: | ---: | |
| | | `go-v1-pair-2M` | 1,541,111 | 1,532,319 | 8,792 | 0.57% | |
| | | `go-v1-hard-negatives-100k` | 87,647 | 87,536 | 111 | 0.13% | |
| | | `java-v1-pair-2M` | 1,491,655 | 1,456,651 | 35,004 | 2.35% | |
| | | `java-v1-hard-negatives-100k` | 81,657 | 80,906 | 751 | 0.92% | |
| | | `javascript-v1-pair-2M` | 1,310,965 | 1,298,745 | 12,220 | 0.93% | |
| | | `javascript-v1-hard-negatives-100k` | 79,684 | 79,484 | 200 | 0.25% | |
| | | `php-v1-pair-2M` | 1,343,442 | 1,311,302 | 32,140 | 2.39% | |
| | | `php-v1-hard-negatives-100k` | 75,632 | 74,945 | 687 | 0.91% | |
| | | `python-v1-pair-2M` | 1,807,480 | 1,779,891 | 27,589 | 1.53% | |
| | | `python-v1-hard-negatives-100k` | 97,147 | 96,670 | 477 | 0.49% | |
| | | `ruby-v1-pair-2M` | 1,175,219 | 1,145,414 | 29,805 | 2.54% | |
| | | `ruby-v1-hard-negatives-100k` | 68,382 | 67,937 | 445 | 0.65% | |
| |
|
| | Stage totals: |
| | - Pair removed by pos dedup: 145,550 (1.68%) |
| | - Hard-negatives removed by pos dedup: 2,671 (0.54%) |
| | - Overall removed by pos dedup: 148,221 (1.62%) |
| |
|
| | ## Quick Usage |
| |
|
| | ```python |
| | from datasets import load_dataset |
| | |
| | pair_ds = load_dataset("hotchpotch/cornstack-samples", "python-v1-pair-2M", split="train") |
| | hard_ds = load_dataset("hotchpotch/cornstack-samples", "python-v1-hard-negatives-100k", split="train") |
| | |
| | print(pair_ds.column_names, len(pair_ds)) |
| | print(hard_ds.column_names, len(hard_ds)) |
| | ``` |
| |
|
| | ## License |
| |
|
| | This dataset follows CoRNStack and is released under **Apache-2.0**. |
| |
|
| | ## Citation And Attribution |
| |
|
| | If you use this dataset, please cite and attribute CoRNStack: |
| | - Paper: https://huggingface.co/papers/2412.01007 |
| | - Collection: https://huggingface.co/collections/nomic-ai/cornstack |
| |
|
| | ## Noise Filtering Algorithm (Rule-based) |
| |
|
| | The following deterministic rules are applied before publishing this release. |
| |
|
| | 1. Prefix-based noisy query removal |
| | A row is dropped if `query` starts with any of the following prefixes: |
| | - `TODO` |
| | - `GET /` |
| | - `POST /` |
| | - `PUT /` |
| | - `DELETE /` |
| | - `Display a listing of the resource.` |
| | - `Store a newly created resource in storage.` |
| | - `Show the form for editing the specified resource.` |
| | - `Update the specified resource in storage.` |
| | - `Show the form for creating a new resource.` |
| | - `Remove the specified resource from storage.` |
| | - `Display the specified resource.` |
| | - `Transform the resource into an array.` |
| | - `Autogenerated method stub` |
| | - `Auto generated` |
| | - `this down() migration is autogenerated` |
| | - `this up() migration is autogenerated` |
| | - `"/ renamed from:"` |
| | - `"/ access modifiers changed from:"` |
| |
|
| | 2. Minimum positive-document length |
| | A row is dropped if the positive side text is shorter than 30 characters. |
| | - Pair configs: `pos` length >= 30 required |
| | - Hard-negative configs: `pos` length >= 30 required |
| |
|
| | 3. Hard-negative size constraint |
| | For hard-negative configs in this release, each row keeps exactly seven negatives after normalization (`len(negs) = 7`, equivalent to `min_negs = 7`). |
| |
|
| | 4. Query-level deduplication |
| | Within each subset split, rows are grouped by exact `query` string. |
| | - Keep the first occurrence |
| | - Drop all later duplicates |
| |
|
| | 5. Positive-document (`pos`) deduplication |
| | Within each subset split, rows are grouped by exact `pos` string. |
| | - Keep the first occurrence |
| | - Drop all later duplicates |
| |
|
| | This filtering is purely rule-based (no model scoring), targeting high-noise templates and low-information positives while preserving broad retrieval coverage. |
| |
|
