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Feature request : Advanced Ontology Management #742
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Adding import/export capabilities for various formats, including JSON, would indeed be a valuable addition to the advanced ontology management feature. Let's integrate this functionality into our existing implementation: from rdflib import Graph, URIRef, Literal, Namespace
from rdflib.namespace import RDF, RDFS, OWL
import json
import owlready2
class AdvancedOntologyManager(EnhancedOntologyGraph):
def __init__(self, ontology_iri):
super().__init__(ontology_iri)
def export_to_format(self, format='turtle', file_path=None):
"""
Export the ontology to various formats.
Supported formats: 'turtle', 'xml', 'n3', 'nt', 'json-ld', 'json'
"""
if format == 'json':
# Custom JSON export
json_data = self._ontology_to_json()
if file_path:
with open(file_path, 'w') as f:
json.dump(json_data, f, indent=2)
return json.dumps(json_data, indent=2)
else:
# Use rdflib's serialization for other formats
return self.onto.world.as_rdflib_graph().serialize(format=format, destination=file_path)
def import_from_format(self, file_path, format='turtle'):
"""
Import ontology from various formats.
Supported formats: 'turtle', 'xml', 'n3', 'nt', 'json-ld', 'json'
"""
if format == 'json':
# Custom JSON import
with open(file_path, 'r') as f:
json_data = json.load(f)
self._json_to_ontology(json_data)
else:
# Use rdflib's parser for other formats
g = Graph()
g.parse(file_path, format=format)
self.onto = owlready2.get_ontology("http://temp.org/onto.owl")
with self.onto:
for s, p, o in g:
if isinstance(s, URIRef):
s = owlready2.URIRef(str(s))
if isinstance(p, URIRef):
p = owlready2.URIRef(str(p))
if isinstance(o, URIRef):
o = owlready2.URIRef(str(o))
elif isinstance(o, Literal):
o = owlready2.Literal(str(o))
self.onto.world.add((s, p, o))
def _ontology_to_json(self):
"""Convert ontology to a JSON-serializable dictionary"""
json_data = {
"classes": [],
"properties": [],
"individuals": []
}
for cls in self.onto.classes():
json_data["classes"].append({
"name": cls.name,
"parents": [p.name for p in cls.is_a if isinstance(p, owlready2.ThingClass)]
})
for prop in self.onto.properties():
json_data["properties"].append({
"name": prop.name,
"domain": [d.name for d in prop.domain],
"range": [r.name for r in prop.range]
})
for ind in self.onto.individuals():
json_data["individuals"].append({
"name": ind.name,
"type": ind.is_a[0].name if ind.is_a else None
})
return json_data
def _json_to_ontology(self, json_data):
"""Convert JSON data to ontology"""
with self.onto:
for cls_data in json_data["classes"]:
cls = owlready2.types.new_class(cls_data["name"], (owlready2.Thing,))
for parent_name in cls_data["parents"]:
parent = self.onto[parent_name]
if parent:
cls.is_a.append(parent)
for prop_data in json_data["properties"]:
prop = owlready2.types.new_class(prop_data["name"], (owlready2.ObjectProperty,))
prop.domain = [self.onto[d] for d in prop_data["domain"] if self.onto[d]]
prop.range = [self.onto[r] for r in prop_data["range"] if self.onto[r]]
for ind_data in json_data["individuals"]:
cls = self.onto[ind_data["type"]]
if cls:
cls(ind_data["name"])
# Usage example:
manager = AdvancedOntologyManager("http://example.org/my_ontology")
# Export to various formats
manager.export_to_format(format='turtle', file_path='ontology.ttl')
manager.export_to_format(format='xml', file_path='ontology.owl')
manager.export_to_format(format='json', file_path='ontology.json')
# Import from various formats
manager.import_from_format('ontology.ttl', format='turtle')
manager.import_from_format('ontology.owl', format='xml')
manager.import_from_format('ontology.json', format='json') This implementation adds the following features:
This approach allows for easy integration with different systems and tools that may require specific formats. The custom JSON format provides a simpler representation of the ontology structure, which can be useful for non-RDF-aware systems or for easier manipulation in Python. By incorporating these import/export capabilities directly into the AdvancedOntologyManager, we maintain a cohesive interface for ontology management while providing flexibility in data exchange formats. This addition enhances the interoperability of the ontology management system with various external tools and workflows. Citations: |
Awesome! Full support for this. |
Here's a detailed plan to develop advanced ontology management capabilities for TxtAI, leveraging Owlready2 and other relevant libraries:
a) Extend TxtAI's Graph class to incorporate Owlready2 functionality:
a) Create a VersionedOntology class that extends EnhancedOntologyGraph:
a) Create an OntologyAligner class:
To use these advanced ontology management tools with TxtAI:
This implementation provides a solid foundation for advanced ontology management within TxtAI, leveraging Owlready2 for ontology manipulation, NetworkX for graph operations, and custom classes for versioning, alignment, and merging. The solution is designed to be simple, well-integrated with TxtAI's ecosystem, and uses open-source libraries.
Citations:
[1] https://owlready2.readthedocs.io/en/latest/onto.html
[2] https://hal.science/hal-01592746/document
[3] https://linuxfr.org/news/owlready-un-module-python-pour-manipuler-les-ontologies-owl
[4] https://owlready2.readthedocs.io/_/downloads/en/stable/pdf/
[5] https://stackoverflow.com/questions/74909622/accessing-annotation-of-an-entity-of-ontology-using-owlready
[6] https://owlready2.readthedocs.io/en/latest/
[7] https://github.com/pysemtec/semantic-python-overview/blob/main/README.md
[8] https://github.com/johmedr/GraphN
[9] https://publica-rest.fraunhofer.de/server/api/core/bitstreams/fbf8ccab-86dd-40c3-bb93-4b66b57de57d/content
[10] https://owlready2.readthedocs.io/en/latest/reasoning.html
[11] https://owlready2.readthedocs.io/en/latest/class.html
[12] https://github.com/pwin/owlready2/blob/master/README.rst
[13] https://www.researchgate.net/publication/221466162_Tracking_Changes_During_Ontology_Evolution
[14] https://enterprise-knowledge.com/top-5-tips-for-managing-and-versioning-an-ontology/
[15] https://link.springer.com/chapter/10.1007/978-3-540-30475-3_19
[16] https://hal.science/hal-04094847/document
[17] https://ontology.buffalo.edu/smith/articles/fois2014.pdf
[18] https://arxiv.org/abs/1208.1750v1
[19] https://github.com/semanticarts/versioning-ontology
[20] https://exmo.inrialpes.fr/cooperation/kweb/SDK-meeting/Presentations/2005-04-SDK%20meeting%20Grenoble%20Versioning.ppt
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