baybe.targets.transforms.triangular_transform

baybe.targets.transforms.triangular_transform(arr: _SupportsArray[dtype[Any]] | _NestedSequence[_SupportsArray[dtype[Any]]] | bool | int | float | complex | str | bytes | _NestedSequence[bool | int | float | complex | str | bytes], lower: float, upper: float)

Map values to the interval [0, 1] in a “triangular” fashion.

The shape of the function is “triangular” in that is 0 outside a specified interval and linearly increases to 1 from both interval ends, reaching the value 1 at the center of the interval.

Parameters:

• arr (Union[_SupportsArray[dtype[Any]], _NestedSequence[_SupportsArray[dtype[Any]]], bool, int, float, complex, str, bytes, _NestedSequence[Union[bool, int, float, complex, str, bytes]]]) – The values to be mapped.

• lower (float) – The lower end of the triangle interval. Below, the mapped values are 0.

• upper (float) – The upper end of the triangle interval. Above, the mapped values are 0.

Return type:

ndarray

Returns:

A new array containing the transformed values.