State of the Future Index

Calculate a caller-defined weighted percent-change index from aligned indicators.

Description

A weighted percent-change index combines aligned indicators on their baseline magnitudes.

A weighted percent-change index combines aligned indicators on their baseline magnitudes. Signed weights and baselines change its interpretation.^[1]

Calculate a caller-defined weighted percent-change index from aligned indicators.

When to use State of the Future Index

Use this tool to calculate a caller-defined weighted percent-change index from aligned indicators.

Prepare the recorded observations, ratings, assumptions or expected/observed lists requested. Choose thresholds and definitions appropriate to the planning question.

How to use State of the Future Index and understand its results

Prepare the recorded observations, ratings, assumptions or expected/observed lists requested. Choose thresholds and definitions appropriate to the planning question.
Enter baselineValues, currentValues, weights using the field table and calculation rules, then run the tool.
Read weightedIndex, indicatorCount. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
baselineValues	Baseline indicator values	list of number	Required
currentValues	Current indicator values	list of number	Required
weights	Indicator weights	list of number	Required

Enter nonempty aligned finite lists with nonzero baselines and nonzero total weight. Return index and indicator count; negative values and weights are accepted.

index=100Σ[(current−baseline)/|baseline|×weight]/Σweights

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
weightedIndex	Weighted change index	number
indicatorCount	Indicator count	integer; minimum: 1

json

{
  "input": {
    "baselineValues": [
      100,
      50
    ],
    "currentValues": [
      110,
      45
    ],
    "weights": [
      2,
      1
    ]
  },
  "output": {
    "weightedIndex": 3.3333333333333335,
    "indicatorCount": 2
  }
}

Limitations and assumptions

No official State of the Future Index, weighting system or indicator direction is embedded.

Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Lists are limited to 100,000 entries; the rules above may require smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Scanning Hit Score: Combine four caller ratings into a transparent scanning-hit priority score. For a complementary task, use Data-Center Power Forecast: Forecast data-center power demand against supplied grid capacity.

References

State of the Future Index — tool.io

Similar or alternative tools

Scanning Hit Score
Combine four caller ratings into a transparent scanning-hit priority score.
Data-Center Power Forecast
Forecast data-center power demand against supplied grid capacity.