sdv.constraints.ScalarInequality

class sdv.constraints.ScalarInequality(column_name, relation, value)[source]

Ensure an inequality between the column_name column and a scalar value.

The transformation works by creating a column with the difference between the column_name and value and storing it in the column_name’s place. The reverse transform adds the difference column and the value to reconstruct the column_name.

Parameters
  • column_name (str) – Name of the column to compare.

  • relation (str) – Describes the relation between column_name and value. Choose one among '>', '>=', '<', '<='.

  • value (float or datetime) – Scalar value to compare.

__init__(column_name, relation, value)

Initialize self. See help(type(self)) for accurate signature.

Methods

__init__(column_name, relation, value)

Initialize self.

filter_valid(table_data)

Get only the rows that are valid.

fit(table_data)

Fit Constraint class to data.

fit_transform(table_data)

Fit this Constraint to the data and then transform it.

from_dict(constraint_dict)

Build a Constraint object from a dict.

is_valid(table_data)

Say whether high is greater than low in each row.

reverse_transform(table_data)

Handle logic around reverse transforming constraints.

to_dict()

Return a dict representation of this Constraint.

transform(table_data)

Perform necessary transformations needed by constraint.

Attributes

constraint_columns