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Time To First Value Event Delta

Subtract explicit activation from first-value-event elapsed timestamp using a common monotonic time basis.

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Description

Measure supplied first-value-event time relative to activation.

Business metrics depend on event definitions, time windows, revenue and cost bases, and reporting scope. Observed sales during stockout do not by themselves verify latent demand, while a return contribution depends on which costs were already recognized. Local flags and signed balances are not a complete profitability or causal analysis.

Measure supplied first-value-event time relative to activation.

When to use this tool

Use Time To First Value Event Delta when you already have activationTime, firstValueEventTime and need to measure supplied first-value-event time relative to activation.

How to use the tool and how it works

  1. Enter activationTime, firstValueEventTime. 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 signedGap. Use the output convention below.

Return firstValueEventTime-activationTime.1

Input fieldMeaning and unitsAccepted input
activationTimeActivation TimeRequired. Finite number.
firstValueEventTimeFirst Value Event TimeRequired. Finite number.
Output fieldInterpretationReturned shape
signedGapSigned GapRequired. Finite number.
json
{
  "input": {
    "activationTime": 12,
    "firstValueEventTime": 17
  },
  "output": {
    "signedGap": 5
  }
}

Limitations and assumptions

  • Signed gaps are retained. Event definition and units are supplied; no activation, customer value, clock, attribution or business outcome is verified.
  • 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

Reconcile source transactions, inventory and cohort records with the full metric definitions. Use complete forecasts, accounting and study designs where needed; individual contributions and supplied scenarios do not establish performance or causal effects.

References

  1. Calculation and input contract: business-analytics/time-to-first-value-event-delta — tool.io

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