Description
Check literal membership of a group in a supplied fold-group list.
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.
Check literal membership of a group in a supplied fold-group list.
When to use this tool
Use Fold Group Membership Bit when checking an explicit feature-time or split-membership condition.
How to use the tool and how it works
- Enter group, foldGroups. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read inFold. Inspect inFold before interpreting the associated values.
Check literal membership of a group in a supplied fold-group list. inFold is foldGroups.includes(group).1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| group | Group | Required. Text; maximum UTF-16 length 8192. |
| foldGroups | Fold Groups | Required. Array of text; maximum UTF-16 length 8192; maximum items 256. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| inFold | In Fold | Required. Boolean. |
{
"input": {
"group": "G2",
"foldGroups": [
"G1",
"G2"
]
},
"output": {
"inFold": true
}
}Limitations and assumptions
- No fold assignment is generated, randomized or checked for overlap and coverage.
- 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.
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
- Split Group Empty Fold Budget
Identify empty and below-minimum group-count folds.
- Data Split Chronological Cutoff Membership
Assign a timestamp to complementary chronological splits.