Basic Data Types

Entity Identifiers

lenskit.data.types.ID: TypeAlias = int | str | bytes | numpy.integer[typing.Any] | numpy.str_ | numpy.bytes_ | numpy.object_

Allowable identifier types.

lenskit.data.types.CoreID: TypeAlias = int | str | bytes

Core (non-NumPy) identifier types.

lenskit.data.types.NPID: TypeAlias = numpy.integer[typing.Any] | numpy.str_ | numpy.bytes_ | numpy.object_

NumPy entity identifier types.

lenskit.data.types.IDArray

NumPy arrays of identifiers.

alias of ndarray[tuple[int], dtype[integer[Any] | str_ | bytes_ | object_]]

lenskit.data.types.IDSequence: TypeAlias = '\n    Sequence[ID]\n    | IDArray\n    | pa.StringArray\n    | pa.IntegerArray[Any]\n    | pa.ChunkedArray[Any]\n    | pd.Series[CoreID]\n    '

Sequences of identifiers.

Containers

class lenskit.data.types.UIPair(user, item)

Bases: Generic[T]

A user-item pair of values.

Parameters:

• user (T)

• item (T)