NAVA Good Flag Principle Scorer

Caller weighted evidence score for NAVAG ood Flag, Bad Flag five principles; scores require independent judgement, unknown weight retained. Not official rating, automatic image analysis or universal design quality.

Description

NAVA’s five design principles provide a framework for human flag review.

NAVA’s five design principles provide a framework for human flag review.^{[1, 2]}

This calculator combines independently judged scores with your weights and explicitly records the weight of unassessed principles.

When to use NAVA Good Flag Principle Scorer

Use this tool when you need to reproduce the stated calculation from measured records or independently selected model inputs. Establish the flag dimensions, orientation, specification, palette, or visual annotations needed for this particular calculation.

How to use NAVA Good Flag Principle Scorer and understand its results

Establish the flag dimensions, orientation, specification, palette, or visual annotations needed for this particular calculation.
Enter callerPrincipleWeights, independentlyAssessedPrincipleScores, principleKnownFlags, following the field table and rules below, then run the tool.
Read result. Use the output meanings below to interpret units, signs, flags, and any nested result fields.
Correct reported input issues and run again. For a successful result, check the stated evidence coverage and assumptions before using it in your review.

Input field	Meaning	Value type	Requirement
callerPrincipleWeights	Caller principle weights	list of number	Required
independentlyAssessedPrincipleScores	Independently assessed principle scores	list of number	Required
principleKnownFlags	Principle known flags	list of number	Required

Provide exactly five nonnegative weights, aligned scores in [0,1], and binary known flags in order: simplicity, symbolism, color limit, no lettering/seals, distinctiveness/relatedness. Total weight must be positive. Divide known weighted score contributions by all weight, not just known weight. All-unknown evidence therefore returns score zero and unknown fraction one.

score=Σ(w_i×score_i×known_i)/Σ(w_i); unknown=Σ(w_i×(1−known_i))/Σ(w_i)

Symbols follow the input and output meanings and the calculation rules above.

Output field	Meaning	Value type
result	Calculated observation or reference	object
result.weightedKnownScore	Weighted Known Score	number
result.unknownWeightFraction	Unknown Weight Fraction	number

json

{
  "input": {
    "callerPrincipleWeights": [
      1,
      1,
      1,
      1,
      1
    ],
    "independentlyAssessedPrincipleScores": [
      1,
      0.5,
      1,
      0,
      0.5
    ],
    "principleKnownFlags": [
      1,
      1,
      1,
      1,
      0
    ]
  },
  "output": {
    "result": {
      "weightedKnownScore": 0.5,
      "unknownWeightFraction": 0.2
    }
  }
}

Limitations and assumptions

The calculation uses supplied geometry, observations, or annotations. It does not establish an official construction specification, national identity, or universal design quality.

Missing required fields, unknown fields, wrong types, and violated calculation rules are input issues. Numeric values must be finite; nonfinite results are rejected. Evidence arrays must be dense, with no missing cells. Numeric observation lists allow at most 10,000 entries, subject to any smaller bounds stated above. Extremely large composite outputs are rejected.

Alternative or Complementary methods

For a related review, use Complexity Element Counter Scorer: A design-element inventory can report both a raw count and a policy-weighted complexity measure. The interpretation depends on the independently annotated categories and weights. For a complementary step, use Color Count Penalty Scorer: A color-count penalty is a design policy applied to distinct palette IDs. Deduplication prevents repeated occurrences of one color from being counted as extra colors.

References

NAVA Good Flag Principle Scorer — tool.io
Good Flag, Bad Flag design principles — North American Vexillological Association

Similar or alternative tools

Complexity Element Counter Scorer
A design-element inventory can report both a raw count and a policy-weighted complexity measure. The interpretation depends on the independently annotated categories and weights.
Color Count Penalty Scorer
A color-count penalty is a design policy applied to distinct palette IDs. Deduplication prevents repeated occurrences of one color from being counted as extra colors.