snorkelflow.lfs.LF

class snorkelflow.lfs.LF(name, label=None, templates=None, multipolar_template=None, graph=None, is_trusted=False)

Bases: object

Class to represent an immutable LF.

Examples

Create an LF.

>>> from snorkelflow.lfs import LF
>>> lf_a = LF(name="lf_a", label=0, templates=...)

Due to the immutability, a new LF should be created if you want to change its attributes.

>>> lf_config = lf_a.to_dict()
>>> lf_config["name"] = "lf_b"
>>> lf_b = LF(**lf_config)

\_\_init\_\_

__init__

__init__(name, label=None, templates=None, multipolar_template=None, graph=None, is_trusted=False)

Initialize an LF object.

Parameters

Parameters

Name	Type	Default	Info
name	str		Name of the LF.
label	Optional[Any]	None	Label associated with the LF. This shouldn’t be provided for a multi-polar LF.
templates	Optional[List[Dict[str, Any]]]	None	Templates for the LF. Each template is assigned with a 0-th based index that can be used in graph.
multipolar_template	Optional[Dict[str, Any]]	None	Template for the multi-polar LF.
graph	Union[str, int, List[Any], None]	None	Provide this argument to construct a compound LF, one that’s made of multiple templates. Optional if there is only one template. It is a list that starts with a logical operator, followed by template indexes or sub-lists. The logical operator can be "$AND", "$OR", or "$NOT". The list can be nested but the depth should be 3 or less. For example, a compound LF with ["$AND", 0, ["$NOT", 1]] votes if the 0th template returns True and the 1st template returns False, and its depth is 2.
is_trusted	Optional[bool]	False	If True, designate the LF as trusted.

Methods

__init__(name[, label, templates, ...])	Initialize an LF object.
to_dict()	Get a dictionary representation of the LF.

Attributes

graph
is_multipolar
is_trusted
name
label
templates
multipolar_template

to\_dict

to_dict

to_dict()

Get a dictionary representation of the LF.

Returns

Returns

Dictionary representation of the LF

Return type

Return type

Dict[str, Any]

graph: Union[str, int, List[Any], None] = None

property is_multipolar: bool

is_trusted: Optional[bool] = False

label: Optional[Any]

multipolar_template: Optional[Dict[str, Any]]

name: str

templates: Optional[List[Dict[str, Any]]]