ckipnlp.util.parser module

class ckipnlp.util.parser.ParserNodeData

Bases: ckipnlp.util.parser._ParserNodeData

A parser node.

Fields:

• role (str): the role.
• pos (str): the post-tag.
• term (str): the text term.

classmethod from_text(text)

Create ParserNodeData object from ckipnlp.parser.CkipParser output.

to_dict()

to_json(**kwargs)

class ckipnlp.util.parser.ParserNode(tag=None, identifier=None, expanded=True, data=None)

Bases: treelib.node.Node

A parser node for tree.

to_dict()

to_json(**kwargs)

class ckipnlp.util.parser.ParserRelation

Bases: ckipnlp.util.parser._ParserRelation

A parser relation.

Fields:

• head (ParserNode): the head node.
• tail (ParserNode): the tail node.
• relation (str): the relation.

to_dict()

to_json(**kwargs)

class ckipnlp.util.parser.ParserTree(tree=None, deep=False, node_class=None)

Bases: treelib.tree.Tree

A parsed tree.

classmethod from_text(tree_text)

Create ParserTree object from ckipnlp.parser.CkipParser output.

to_dict(node_id=0)

Transform the whole tree into a dict.

to_json(**kwargs)

To format the tree in JSON format.

show(*, key=<function ParserTree.<lambda>>, idhidden=False, **kwargs)

Show pretty tree.

has_dummies(node_id)

Determine if a node has dummies.

Parameters:node_id (int) – ID of target node. Returns:bool – whether or not target node has dummies.

get_dummies(node_id, deep=True, _check=True)

Get dummies of a node.

Parameters:

• node_id (int) – ID of target node.
• deep (bool) – find dummies recursively.

Returns:

tuple – the dummies (ParserNode).

Raises:

LookupError – when target node has no dummy (only when _check is set).

get_heads(root_id=0, deep=True)

Get all head nodes of a subtree.

Parameters:

• node_id (int) – ID of the root node of target subtree.
• deep (bool) – find heads recursively.

Returns:

• list – the head nodes (ParserNode).
• ParserNode – the head node (when deep is set).

Todo

Get information of nodes with pos type PP or GP.

get_relations(root_id=0)

Get all relations of a subtree.

Parameters:node_id (int) – ID of the subtree root node. Yields:ParserRelation – the relation.