agentsqripts/lib/wet-code/ast/duplicate-type/calculateConfidence.js

Comprehensive static code analysis toolkit for identifying technical debt, security vulnerabilities, performance issues, and code quality problems

/**
 * @file Calculate confidence in duplication classification
 * @description Single responsibility: Compute confidence score for classification
 */

function calculateConfidence(diffTypes, avgDiffs) {
  // Higher confidence when differences follow clear patterns
  const total = diffTypes.total || 1;
  const maxRatio = Math.max(
    diffTypes.variableNames / total,
    diffTypes.stringLiterals / total,
    diffTypes.numbers / total
  );
  
  // Lower confidence with more structural differences
  const structuralRatio = diffTypes.structure / total;
  
  return Math.max(0.1, Math.min(1.0, maxRatio - structuralRatio));
}

module.exports = calculateConfidence;