how to query any synset relation type, like 'agent', 'causes', etc ?

[costaverde]

Hi,

Many synset relation types are defined as wn.constants.SYNSET_RELATIONS in
https://wn.readthedocs.io/en/latest/api/wn.constants.html, but it seems we can only get the most common types like hypernyms, hyponyms, etc.

Is there a way to query any of them, maybe via Sqlite and how ?

Thanks

[vsraptor]

https://github.com/goodmami/wn/blob/main/wn/_queries.py

i tracked this as a root of .similarity calculations:

wn/wn/_core.py

Line 459 in f587a33

def relation_paths(self: T, *args: str, end: T = None) -> Iterator[List[T]]:

which is called by :

    paths = list(self.relation_paths('hypernym', 'instance_hypernym'))

i'm also looking of what are other ways of relations

[costaverde]

Yes, in https://github.com/goodmami/wn/blob/main/wn/_queries.py
there is
def get_synset_relations(
source_rowids: Collection[int],
relation_types: Collection[str],
lexicon_rowids: Sequence[int],
) -> Iterator[_Synset_Relation]:
doing the job.
Looking for how to use it..

[vsraptor]

you can also use SQLite browser with ~/.wn_data/wn.db

[goodmami]

The wn._queries module is not part of the public API, nor is any other module prefixed with _. This means that the functions are not documented and they may (and do, occasionally) change from one version to the next without a CHANGELOG entry or change to the major version number. I do not recommend using those.

There is the Synset.get_related() method for finding relations with any available relation name. Similarly for senses is Sense.get_related(), and for sense-to-synset relations there is Sense.get_related_synsets(). Since the last release, both Synset and Sense also have a relations() method which does the same thing but returns a dictionary mapping the relation names to the lists of relations, but unfortunately I forgot to document these. They will be in the next release. The Synset.relation_paths() and Sense.relation_paths() methods return a list of lists of synsets/senses connected by one or more relations.

Methods like Synset.hypernyms() are just for convenience and they capture multiple individual relations. For instance, hypernyms() includes both the hypernym and instance_hypernym relations:

wn/wn/_core.py

Lines 896 to 906 in f587a33

	def hypernyms(self) -> List['Synset']:
	"""Return the list of synsets related by any hypernym relation.
	Both the ``hypernym`` and ``instance_hypernym`` relations are
	traversed.
	"""
	return self.get_related(
	'hypernym',
	'instance_hypernym'
	)

Also, as a general note, it is not the case that all relations in wn.constants.SYNSET_RELATIONS are in use by any one wordnet. A subset of those are used by the English wordnets, another subset by the Polish wordnet, etc.

[vsraptor]

thanks thats very helpful ..i'm trying to figure the relationship structure so I can figure different ways of word-similarity..

Monkey patched repr so I can follow it easier :

def synset_repr(self):
  return re.sub(r"[\[\]']", '', str(self.lemmas()) ).replace(', ',':')

wn.Synset.__repr__ = synset_repr

[costaverde]

Thanks very much @goodmami

I missed the https://wn.readthedocs.io/en/latest/api/wn.html#wn.Synset.get_related in the doc.

[costaverde]