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New Check: Unique Ratio #19

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flitzpiepe93 opened this issue May 7, 2025 · 1 comment
Closed

New Check: Unique Ratio #19

flitzpiepe93 opened this issue May 7, 2025 · 1 comment
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enhancement New feature or request feature request

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@flitzpiepe93
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New Check: Unique Ratio

Description

Create a check to validate that a minimum percentage of values in a column are unique.

Example Usage

UniqueRatioCheckConfig(
    check_id="vendor-id-uniqueness",
    column="VendorID",
    min_ratio=0.7
)

Expected Behavior

  • Calculates the ratio of unique (non-null, non-duplicated) values relative to the total number of rows
  • Fails the check if the actual unique ratio is below the given threshold
  • Should optionally return failed rows or summary only

Benefits

  • Detects columns that may have excessive duplication
  • Useful for assessing feature uniqueness and entropy in datasets
@flitzpiepe93 flitzpiepe93 added enhancement New feature or request feature request labels May 7, 2025
@flitzpiepe93
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Issue solved with the following MR: #33

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