Description
Return positive-duration overlap between feature and label windows.
Model validation depends on when information became available and how records or entities enter splits. A timestamp inequality or group overlap count can identify one local issue without proving absence of every form of leakage.
Return positive-duration overlap between feature and label windows.
When to use this tool
Use Feature Label Time Window Overlap when checking an explicit feature-time or split-membership condition.
How to use the tool and how it works
- Enter featureStart, featureEnd, labelStart, labelEnd. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read overlap, overlaps. Inspect overlaps before interpreting the associated values.
Return positive-duration overlap between feature and label windows. Require ordered endpoints; overlap is max(0,min(ends)-max(starts)), and overlaps uses strict positive intersection.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| featureStart | Feature Start | Required. Finite number. |
| featureEnd | Feature End | Required. Finite number. |
| labelStart | Label Start | Required. Finite number. |
| labelEnd | Label End | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| overlap | Overlap | Required. Finite number. |
| overlaps | Overlaps | Required. Boolean. |
{
"input": {
"featureStart": 0,
"featureEnd": 10,
"labelStart": 8,
"labelEnd": 20
},
"output": {
"overlap": 2,
"overlaps": true
}
}Limitations and assumptions
- Touching endpoints are false; overlap alone does not establish every kind of target leakage.
- 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
Use a complete data-provenance and validation-design review, including label horizons, entity dependence and preprocessing fit scope.
References
Similar or alternative tools
- Feature Window Availability Slack
Return feature publication time and safety-lag slack.
- Cross Validation Purge Window Overlap
Check label overlap with a validation window extended after its end.