dataset-split-review skillA
dataset-split-review is agent-read markdown (skill) from yeaight7/agent-powerups: Use when reviewing how data is split into train/validation/test sets -- especially with time-series data, repeated entities (users, patients, sessions), or imbalanced targets..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
## Purpose A random split is often the wrong split. Incorrect splitting causes massive overestimation of model performance; this review verifies the split methodology matches the structure of the data. ## When to Use - Reviewing splitting code before training or sign-off - Data has a time component, repeated entities, or class imbalance - Validation metrics look too good for the problem ## Inputs - The splitting code - The dataset's structure: time column? entity keys (user/patient/session)? target balance? ## Workflow 1. **Time-series data**: if the data has a time component, random `train_test_split` is strictly forbidden. Require a chronological split so the model cannot learn from the future. 2. **Group leakage**: if the dataset has multiple rows per user/patient/session, a standard split puts rows from the same entity in both train and test. Require GroupKFold or group-based splitting. 3. **Stratification**: for imbalanced targets, verify stratification maintains the target distribution across all splits. 4. **Verify in code, not in description**: read the actual splitting call and its parameters before issuing a verdict. ## Output …
Read the whole file at its exact version.
How to install
mdr add yeaight7/agent-powerups/dataset-split-review@git:20260605.eeda9f1mdr add yeaight7/agent-powerups/dataset-split-review@sha256:ef9af27be7519c98Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_pafaoea3rx44juvy)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260605.eeda9f1 latest | 2026-06-05 | eeda9f1 | 2,164 B | A | view · diff |
| git:20260502.f64ef70 | 2026-05-02 | f64ef70 | 926 B | A | view · diff |
| git:20260502.64d366b | 2026-05-02 | 64d366b | 141 B | B | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2164 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
yeaight7/agent-powerups · 6 stars · license Apache-2.0 · pushed 2026-09-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_pafaoea3rx44juvy GET https://markdownregistry.com/api/v1/resolve?ref=yeaight7/agent-powerups/dataset-split-review GET https://markdownregistry.com/api/v1/blob/ef9af27be7519c98ce3e4e77d019371b0fe7ecff7e7890120599810d978023b6
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