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Minmax Inverse Parameter Consistency Tool

Calculate minmax inverse parameter consistency from explicit caller-supplied inputs.

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Description

For minimum<maximum return reconstructed=minimum+normalized*(maximum-minimum) and residual=value-reconstructed.

Normalization depends on the supplied center, scale, norm, range, reference distribution, or denominator. A zero spread and a missing denominator need an explicit policy, and clipping differs from fitting a scaler. Evaluating one scalar or derivative term does not estimate every parameter or establish a distributional improvement.

For minimum<maximum return reconstructed=minimum+normalized*(maximum-minimum) and residual=value-reconstructed.

When to use this tool

Use Minmax Inverse Parameter Consistency when you already have the required normalization parameters and need this local scalar, range, policy, or derivative term.

How to use the tool and how it works

  1. Enter value, normalized, minimum, maximum. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read reconstructed, residual. Use the output convention below.

For minimum<maximum return reconstructed=minimum+normalized*(maximum-minimum) and residual=value-reconstructed.1

Input fieldMeaning and unitsAccepted input
valueSupplied scalar or returned value under the stated operation.Required. Finite number.
normalizedScalar transformed under the stated formula and zero policy.Required. Finite number.
minimumMinimumRequired. Finite number.
maximumMaximumRequired. Finite number.
Output fieldInterpretationReturned shape
reconstructedReconstructedRequired. Finite number.
residualSigned supplied-minus-reconstructed discrepancy under the stated formula.Required. Finite number.
json
{
  "input": {
    "value": 7,
    "normalized": 0.5,
    "minimum": 2,
    "maximum": 10
  },
  "output": {
    "reconstructed": 6,
    "residual": 1
  }
}

Limitations and assumptions

  • Normalized is not restricted to [0,1] and residual uses value-minus-reconstructed sign. This checks a supplied min-max relation without fitting bounds, choosing a tolerance, or declaring a transform accurate.
  • Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
  • Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.

Alternative or Complementary methods

Fit or verify the intended scaler parameters and statistical model separately. Check units, zero policies, missingness, clipping, inverse conventions, and whether supplied norms or denominators belong to the same data.

References

  1. Calculation and input contract: normalize/minmax-inverse-parameter-consistency — tool.io

Similar or alternative tools

  • Minmax Output Range Inversion

    Return value=inputMinimum+(normalized-outputMinimum)/(outputMaximum-outputMinimum)*(inputMaximum-inputMinimum).

  • Minmax Constant Column Output Policy

    When equal, require value==minimum and return normalized=constantOutput and constant=true; otherwise return (value-minimum)/(maximum-minimum) and constant=false.