Function calculateConfidence

  • calculateConfidence(searchTitle: string, manga: AniListManga): number

    Convert match score to confidence percentage using conservative adaptive scaling. Applies different thresholds based on match score ranges to avoid overconfidence.

    Parameters

    • searchTitle: string

      The search title used for matching

    • manga: AniListManga

      The manga to calculate confidence for

    Returns number

    Confidence percentage between 0-100 (capped at 99% for near-perfect matches)

    Source

    export function calculateConfidence(
      searchTitle: string,
      manga: AniListManga,
    ): number {
      const matchDetails = calculateMatchScoreDetails(manga, searchTitle);
      const { score, matchType } = matchDetails;

      console.debug(
        `[MangaSearchService] Calculating confidence for match score: ${score.toFixed(3)} (${matchType}) between "${searchTitle}" and "${manga.title.english || manga.title.romaji}"`,
      );

      if (score <= 0) {
        return 0;
      }

      const logisticValue =
        1 / (1 + Math.exp(-LOGISTIC_STEEPNESS * (score - LOGISTIC_MIDPOINT)));
      const baseConfidence = CONFIDENCE_FLOOR + logisticValue * CONFIDENCE_RANGE;
      const adjustment = MATCH_TYPE_BIAS[matchType] ?? 0;
      const adjustedConfidence = Math.min(
        MAX_CONFIDENCE,
        Math.max(CONFIDENCE_FLOOR, baseConfidence + adjustment),
      );
      return Math.round(adjustedConfidence);
    }

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