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/**
* @module Intelligence/ContentQuality
* @category Intelligence Operations / Supporting Infrastructure
* @name Article Quality Enhancer - Economist-Style Content Validation Framework (TypeScript)
*
* @description
* Comprehensive content quality assurance system implementing The Economist-style editorial standards
* for political journalism. This utility validates article structure, analytical depth, source attribution,
* and perspective diversity to ensure intelligence reporting meets rigorous transparency requirements.
*
* @author Hack23 AB (Content Intelligence Team)
* @license Apache-2.0
* @version 2.0.0
*/
import fs from 'fs';
import type { QualityThresholds, QualityMetrics, QualityResult } from './types/validation.js';
import { hasEconomicContext } from './world-bank-context.js';
/**
* Map of normalized party codes to their common name variants.
* Prevents double-counting when both full names and abbreviations appear.
*/
const PARTY_VARIANTS: Readonly<Record<string, readonly string[]>> = {
S: ['Socialdemokraterna', 'Social Democrats', 'S'],
M: ['Moderaterna', 'Moderate', 'M'],
SD: ['Sverigedemokraterna', 'Sweden Democrats', 'SD'],
C: ['Centerpartiet', 'Centre Party', 'C'],
V: ['Vänsterpartiet', 'Left Party', 'V'],
KD: ['Kristdemokraterna', 'Christian Democrats', 'KD'],
L: ['Liberalerna', 'Liberals', 'L'],
MP: ['Miljöpartiet', 'Green Party', 'MP'],
} as const;
/**
* Riksdag/Regering document ID patterns
*/
const DOCUMENT_ID_PATTERNS: readonly RegExp[] = [
/\b[A-Z]{1,3}\d{1,4}\/\d{2}:\d+\b/g, // Committee reports: AU10/24:1
/\bProp\.\s*\d{4}\/\d{2}:\d+\b/gi, // Propositions: Prop. 2024/25:1
/\bBet\.\s*\d{4}\/\d{2}:[A-Z]{1,3}\d+\b/gi, // Committee reports: Bet. 2024/25:FiU10
/\bMot\.\s*\d{4}\/\d{2}:\d+\b/gi, // Motions: Mot. 2024/25:123
/\bIP\s*\d{4}\/\d{2}:\d+\b/gi, // Interpellations: IP 2024/25:45
/\bFr\.\s*\d{4}\/\d{2}:\d+\b/gi, // Questions: Fr. 2024/25:67
];
/**
* Default quality thresholds based on The Economist standards
*/
const DEFAULT_THRESHOLDS: QualityThresholds = {
minQualityScore: 0.80,
minAnalyticalDepth: 0.6,
minPartySources: 6,
minCrossReferences: 3,
requireWhyThisMatters: true,
requireHistoricalContext: true,
recommendHistoricalContext: true,
recommendInternationalComparison: false,
recommendEconomicContext: true,
};
/**
* Strip HTML tags from content
*/
function stripHtml(html: string): string {
return html.replace(/<[^>]*>/g, ' ').replace(/\s+/g, ' ').trim();
}
/**
* Assess analytical depth of article content
*
* Looks for:
* - Causal reasoning ("because", "therefore", "as a result")
* - Comparative analysis ("compared to", "in contrast", "while")
* - Trend analysis ("trend", "pattern", "shift")
* - Evidence-based claims (references to data, studies, reports)
* - Multiple perspectives (quotes from different actors)
*
* @param content - HTML content of article
* @returns Score 0.0-1.0
*/
function assessAnalyticalDepth(content: string): number {
const text: string = stripHtml(content).toLowerCase();
let score: number = 0.0;
// Causal reasoning indicators (0.2 max)
const causalWords: readonly string[] = ['because', 'therefore', 'as a result', 'consequently', 'due to', 'leads to', 'caused by'];
const causalCount: number = causalWords.filter((word: string) => text.includes(word)).length;
score += Math.min(causalCount * 0.04, 0.2);
// Comparative analysis (0.2 max)
const comparativeWords: readonly string[] = ['compared to', 'in contrast', 'while', 'whereas', 'on the other hand', 'however'];
const comparativeCount: number = comparativeWords.filter((word: string) => text.includes(word)).length;
score += Math.min(comparativeCount * 0.04, 0.2);
// Trend/pattern analysis (0.2 max)
const trendWords: readonly string[] = ['trend', 'pattern', 'shift', 'change', 'evolution', 'development'];
const trendCount: number = trendWords.filter((word: string) => text.includes(word)).length;
score += Math.min(trendCount * 0.04, 0.2);
// Evidence-based claims (0.2 max)
const evidenceWords: readonly string[] = ['data shows', 'according to', 'study', 'report', 'statistics', 'evidence'];
const evidenceCount: number = evidenceWords.filter((word: string) => text.includes(word)).length;
score += Math.min(evidenceCount * 0.04, 0.2);
// Multiple perspectives (0.2 max) - count quotes
const quoteCount: number = (content.match(/<blockquote>/gi) || []).length +
(text.match(/"\w/g) || []).length / 2;
score += Math.min(quoteCount * 0.04, 0.2);
return Math.min(score, 1.0);
}
/**
* Count unique party perspectives mentioned in article.
*
* Uses PARTY_VARIANTS pattern to prevent double-counting when both
* full names and abbreviations appear in the same text.
*
* @param content - HTML content of article
* @returns Number of unique parties mentioned
*/
function countPartyPerspectives(content: string): number {
const text: string = content;
const partiesFound: Set<string> = new Set();
// Iterate through party codes and check all variants
(Object.entries(PARTY_VARIANTS) as [string, readonly string[]][]).forEach(([code, variants]: [string, readonly string[]]) => {
// Check if any variant of this party is mentioned
for (const variant of variants) {
const regex: RegExp = new RegExp(`\\b${variant}\\b`, 'gi');
if (regex.test(text)) {
partiesFound.add(code);
break; // Stop checking variants once party is found
}
}
});
return partiesFound.size;
}
/**
* Count cross-referenced Riksdag/Regering documents
*
* @param content - HTML content of article
* @returns Number of unique document IDs found
*/
function countCrossReferences(content: string): number {
const documentIds: Set<string> = new Set();
DOCUMENT_ID_PATTERNS.forEach((pattern: RegExp) => {
const matches: RegExpMatchArray | null = content.match(pattern);
(matches || []).forEach((match: string) => documentIds.add(match));
});
return documentIds.size;
}
/**
* Detect "Why This Matters" section
*
* @param content - HTML content of article
* @returns True if section exists
*/
function hasWhyThisMatters(content: string): boolean {
const patterns: readonly RegExp[] = [
/why\s+this\s+matters/i,
/varför\s+detta\s+betyder/i,
/betydelse/i,
/implications/i,
/konsekvenser/i,
];
return patterns.some((pattern: RegExp) => pattern.test(content));
}
/**
* Detect historical context
*
* @param content - HTML content of article
* @returns True if historical context present
*/
function hasHistoricalContext(content: string): boolean {
const text: string = stripHtml(content).toLowerCase();
const patterns: readonly RegExp[] = [
/historically/i,
/in \d{4}/,
/since \d{4}/,
/tidigare/i,
/historiskt/i,
];
return patterns.some((pattern: RegExp) => pattern.test(text));
}
/**
* Detect international comparison
*
* @param content - HTML content of article
* @returns True if international comparison present
*/
function hasInternationalComparison(content: string): boolean {
const text: string = stripHtml(content).toLowerCase();
const patterns: readonly RegExp[] = [
/compared to.*country/i,
/international.*comparison/i,
/other.*countries/i,
/jämfört med.*länder/i,
/internationell.*jämförelse/i,
];
return patterns.some((pattern: RegExp) => pattern.test(text));
}
/** Weight configuration for quality score calculation */
interface QualityWeights {
readonly analyticalDepth: number;
readonly partyPerspectives: number;
readonly crossReferences: number;
readonly whyThisMatters: number;
readonly historicalContext: number;
readonly internationalComparison: number;
}
/**
* Calculate overall quality score
*
* Weights:
* - Analytical depth: 30%
* - Party perspectives: 25%
* - Cross-references: 25%
* - "Why This Matters": 10%
* - Historical context: 5%
* - International comparison: 5%
*
* @param metrics - Individual quality metrics
* @returns Overall score 0.0-1.0
*/
function calculateQualityScore(metrics: QualityMetrics): number {
const weights: QualityWeights = {
analyticalDepth: 0.30,
partyPerspectives: 0.25,
crossReferences: 0.25,
whyThisMatters: 0.10,
historicalContext: 0.05,
internationalComparison: 0.05,
};
let score: number = 0.0;
// Analytical depth (already 0-1)
score += metrics.analyticalDepth * weights.analyticalDepth;
// Party perspectives (normalize: 6+ parties = 1.0, reflecting 8-party Swedish system)
score += Math.min(metrics.partyCount / 6, 1.0) * weights.partyPerspectives;
// Cross-references (normalize: 3+ refs = 1.0)
score += Math.min(metrics.crossReferences / 3, 1.0) * weights.crossReferences;
// Binary checks
score += (metrics.hasWhyThisMatters ? 1.0 : 0.0) * weights.whyThisMatters;
score += (metrics.hasHistoricalContext ? 1.0 : 0.0) * weights.historicalContext;
score += (metrics.hasInternationalComparison ? 1.0 : 0.0) * weights.internationalComparison;
return Math.min(score, 1.0);
}
/**
* Enhance article quality and validate against thresholds
*
* @param articlePath - Path to article HTML file
* @param thresholds - Quality thresholds (optional, merged with defaults)
* @returns Quality assessment result
*/
export async function enhanceArticleQuality(
articlePath: string,
thresholds: Partial<QualityThresholds> = {},
): Promise<QualityResult> {
const options: QualityThresholds = { ...DEFAULT_THRESHOLDS, ...thresholds };
if (!fs.existsSync(articlePath)) {
return {
passed: false,
error: 'Article file not found',
articlePath,
};
}
const content: string = fs.readFileSync(articlePath, 'utf-8');
// Collect metrics
const metrics: QualityMetrics = {
analyticalDepth: assessAnalyticalDepth(content),
partyCount: countPartyPerspectives(content),
crossReferences: countCrossReferences(content),
hasWhyThisMatters: hasWhyThisMatters(content),
hasHistoricalContext: hasHistoricalContext(content),
hasInternationalComparison: hasInternationalComparison(content),
hasEconomicContext: hasEconomicContext(content),
};
// Calculate overall score
const qualityScore: number = calculateQualityScore(metrics);
// Validate against thresholds
const issues: string[] = [];
if (qualityScore < options.minQualityScore) {
issues.push(`Quality score ${qualityScore.toFixed(2)} below threshold ${options.minQualityScore}`);
}
if (metrics.analyticalDepth < options.minAnalyticalDepth) {
issues.push(`Analytical depth ${metrics.analyticalDepth.toFixed(2)} below threshold ${options.minAnalyticalDepth}`);
}
if (metrics.partyCount < options.minPartySources) {
issues.push(`Only ${metrics.partyCount} party perspectives (need ${options.minPartySources})`);
}
Eif (metrics.crossReferences < options.minCrossReferences) {
issues.push(`Only ${metrics.crossReferences} cross-references (need ${options.minCrossReferences})`);
}
if (options.requireWhyThisMatters && !metrics.hasWhyThisMatters) {
issues.push('Missing "Why This Matters" section');
}
if (options.requireHistoricalContext && !metrics.hasHistoricalContext) {
issues.push('Missing required historical context (at least one historical comparison required)');
}
// Separate warnings (recommendations) from blocking failures
const warnings: string[] = [];
// Only warn about historical context if it is not already a blocking error
Iif (options.recommendHistoricalContext && !options.requireHistoricalContext && !metrics.hasHistoricalContext) {
warnings.push('Recommended: Add historical context');
}
Iif (options.recommendInternationalComparison && !metrics.hasInternationalComparison) {
warnings.push('Recommended: Add international comparison');
}
if (options.recommendEconomicContext && !metrics.hasEconomicContext) {
warnings.push('Recommended: Add economic context (World Bank indicators, GDP, unemployment data)');
}
return {
passed: issues.length === 0, // Only blocking issues affect passed status
qualityScore,
metrics,
issues,
warnings, // Non-blocking recommendations
thresholds: options,
articlePath,
};
}
/**
* Batch enhance multiple articles
*
* @param articlePaths - Array of article paths
* @param thresholds - Quality thresholds (optional, merged with defaults)
* @returns Array of quality results
*/
export async function batchEnhanceQuality(
articlePaths: readonly string[],
thresholds: Partial<QualityThresholds> = {},
): Promise<QualityResult[]> {
const results: QualityResult[] = [];
for (const articlePath of articlePaths) {
const result: QualityResult = await enhanceArticleQuality(articlePath, thresholds);
results.push(result);
}
return results;
}
// Export individual assessment functions for testing
export {
assessAnalyticalDepth,
countPartyPerspectives,
countCrossReferences,
hasWhyThisMatters,
hasHistoricalContext,
hasInternationalComparison,
calculateQualityScore,
DEFAULT_THRESHOLDS,
};
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