dataset-split-review SKILL.md skillA
This file is byte-identical to the first copy the registry indexed. Same content hash, so the same checks give both the same grade.
dataset-split-review from yeaight7/agent-powerups is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add yeaight7/agent-powerups/dataset-split-review@git:20260605.b3dee57Pins git:20260605.b3dee57 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- yeaight7/agent-powerups
- Path
skills/dataset-split-review/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260605.b3dee57, committed Jun 5, 2026
- First version recorded
- Jun 2, 2026
- Size
- 2,164 bytes
- Repository stars
- 8
- License
- Apache-2.0
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.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file 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@sha256:ef9af27be7519c98The line at the top of this page pins the label git:20260605.b3dee57, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_rvpvjkhuzt4arich)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Jun 2, 2026 and Jun 5, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260605.b3dee57 latest | 2026-06-05 | b3dee57 | 2,164 B | A | view · diff |
| git:20260602.4470d2c | 2026-06-02 | 4470d2c | 926 B | A | 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 · 8 stars · license Apache-2.0 · pushed 2026-09-27 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_rvpvjkhuzt4arich GET https://markdownregistry.com/api/v1/resolve?ref=yeaight7/agent-powerups/dataset-split-review GET https://markdownregistry.com/api/v1/blob/ef9af27be7519c98ce3e4e77d019371b0fe7ecff7e7890120599810d978023b6
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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