# Meeting Topic Grouped Three-Fold Cross-Validation

> Meeting Topic Grouped Three-Fold Cross-Validation is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-15).

Runs a grouped three-fold baseline cross-validation on up to 200 labelled meeting-topic text records using a naive-Bayes classifier to estimate classification accuracy.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/assistant-sector-ml-meeting-topic-cross-validation?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/meeting-topic-grouped-three-fold-cross-validation-4570ca1c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Mq0CWxgRMFqUVDkkhnoCK

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability meeting-topic-grouped-three-fold-cross-validation-4570ca1c -d '<json body>'
```

Example prompt: Run a grouped three-fold baseline cross-validation on these 48 labelled meeting transcript snippets — each tagged as planning, progress, decision, or review — and tell me what accuracy the naive-Bayes model gets across the folds.

## When to prefer this

Choose this endpoint when you have a small labelled dataset of meeting-topic text (up to 200 records) and want a quick, cheap baseline accuracy estimate using local naive-Bayes cross-validation before committing to fine-tuning a larger model. It is ideal for label quality audits, annotation sanity checks, and establishing a performance floor. Prefer alternatives if you need a hosted model, foundation-model fine-tuning, inference on unlabelled data, or datasets larger than 200 records.

## Known failure modes

- Fewer than 2 records supplied — returns validation error
- Records missing required fields (id, text, actual) — returns schema error
- More than 200 records supplied — request rejected with maxItems error
- Invalid category value in 'actual' field (not one of planning/progress/decision/review) — enum validation failure
- Insufficient class representation for folding — may return degenerate or unreliable fold results
- Payment not settled via x402 protocol — returns 402 Payment Required

## How this service works

Meeting topic - Grouped three-fold baseline evaluation: Grouped three-fold baseline evaluation for Meeting topic. Up to 200 supplied labelled text records. Local dataset tools, evaluation and small naive-Bayes baselines; no hosted model or foundation-model training. One of 25 profiles or calculations across 20 shared operations in this sector. 0.01 USDC includes one bounded grouped three-fold baseline evaluation deliverable.

## Output

A cross-validation report containing the grouped three-fold evaluation results for the supplied labelled meeting-topic records, including per-fold accuracy, overall accuracy, and baseline naive-Bayes performance metrics across the four categories (planning, progress, decision, review).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "records": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "id",
     "text",
     "actual"
    ],
    "properties": {
     "id": {
      "type": "string",
      "default": "",
      "maxLength": 80,
      "minLength": 1
     },
     "text": {
      "type": "string",
      "default": "",
      "maxLength": 1000
     },
     "actual": {
      "enum": [
       "planning",
       "progress",
       "decision",
       "review"
      ],
      "type": "string"
     }
    },
    "additionalProperties": false
   },
   "default": [
    {
     "id": "example-0-0",
     "text": "planning sample document number 0 for this supplied dataset.",
     "actual": "planning"
    },
    {
     "id": "example-0-1",
     "text": "planning sample document number 1 for this supplied dataset.",
     "actual": "planning"
    },
    {
     "id": "example-0-2",
     "text": "planning sample document number 2 for this supplied dataset.",
     "actual": "planning"
    },
    {
     "id": "example-1-0",
     "text": "progress sample document number 0 for this supplied dataset.",
     "actual": "progress"
    },
    {
     "id": "example-1-1",
     "text": "progress sample document number 1 for this supplied dataset.",
     "actual": "progress"
    },
    {
     "id": "example-1-2",
     "text": "progress sample document number 2 for this supplied dataset.",
     "actual": "progress"
    },
    {
     "id": "example-2-0",
     "text": "decision sample document number 0 for this supplied dataset.",
     "actual": "decision"
    },
    {
     "id": "example-2-1",
     "text": "decision sample document number 1 for this supplied dataset.",
     "actual": "decision"
    },
    {
     "id": "example-2-2",
     "text": "decision sample document number 2 for this supplied dataset.",
     "actual": "decision"
    },
    {
     "id": "example-3-0",
     "text": "review sample document number 0 for this supplied dataset.",
     "actual": "review"
    },
    {
     "id": "example-3-1",
     "text": "review sample document number 1 for this supplied dataset.",
     "actual": "review"
    },
    {
     "id": "example-3-2",
     "text": "review sample document number 2 for this supplied dataset.",
     "actual": "review"
    }
   ],
   "maxItems": 200,
   "minItems": 2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/meeting-topic-grouped-three-fold-cross-validation-4570ca1c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)