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Citation Extraction Skill

citation-extraction

Extract and validate citations with Jaccard overlap calculation. Ensures all claims have verifiable source evidence with ≥0.7 alignment threshold.

SKILL.md

Full skill instructions

Citation Extraction Skill

Overview

Validates citations by calculating Jaccard overlap (intersection over union) between cited text and source passages. Enforces ≥0.7 threshold for quality.

When to Use

  • Validate citations in clinical summaries
  • Calculate Jaccard overlap for Evaluator metrics
  • Extract source text spans for claims

Installation

IMPORTANT: This skill has its own isolated virtual environment (.venv) managed by uv. Do NOT use system Python.

Initialize the skill's environment:

# From the skill directory
cd .agent/​skills/​citation-extraction
uv sync  # Creates .venv (no external dependencies, uses Python stdlib)

Usage

CRITICAL: Always use uv run to execute code with this skill's .venv, NOT system Python.

# From .agent/​skills/​citation-extraction/ directory
# Run with: uv run python -c "..."
from citation_extraction import CitationExtractor

extractor = CitationExtractor()

# Validate citation
jaccard = extractor.calculate_jaccard_overlap(
    claim_text="Patient has hypertension",
    source_text="Patient diagnosed with hypertension 10 years ago"
)

if jaccard >= 0.7:
    print(f"Valid citation (Jaccard: {jaccard})")

Implementation

See citation_extraction.py.

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