class sakkara.relation.group.Group(name: str, members: ndarray[Any, dtype[Any]])

Class corresponding to a data frame column, with capabilities of handling relations to other groups.

Parameters:

• name – Name of the group, should be same as the column

• members – The names of the unique column values, the members, ordered by their first appearance.

add_child(child: Group) → None

Add a child relation to this group

Parameters:

child – The child group

add_parent(parent: Group, parent_mapping: ndarray[Any, dtype[int]]) → None

Add a parent relation to this group

Parameters:

• parent – The parent group

• parent_mapping – Indices of parent members (of the parent group), ordered by the corresponding member of this group

add_twin(twin: Group) → None

Add a twin relation to this group

Parameters:

twin – The twin group

clear_minibatch() → None

Reset the minibatch variable of this group.

get_minibatch(batch_size) → TensorVariable

Get a PyMC minibatch variable created from this group. Creates a new instance if not already created.