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Owlready2 0.10 has been released!

Owlready is a Python module for ontology-oriented programming. It can load OWL 2.0 ontologies and manipulate them transparently in Python.

This new version fixes many bugs and adds the support of ontology metadata. It also introduces the use of Cython, for improving performances when reading RDF/XML and OWL/XML files. Owlready2 is now able to read these files as fast as Java !

Here are the changes in version 0.10:

  • Add Ontology.metadata for adding/querying ontology metadata
  • Allows multiple individual creations with the same name/IRI, now returning the same individuals
  • Add OwlReadyInconsistentOntologyError and Word.inconsistent_classes()
  • Implement RDF/XML and OWL/XML parsing in Cython (25% speed boost for parsing)
  • Small optimization
  • Extend individual.prop.indirect() to include relations asserted at the class level
  • Add .query_owlready() method to RDF graph
  • Bugfixes: - Fix reasoning when obtaining classes equivalent to nothing - Fix World creation with backend parameters - Fix error when adding property at the class definition level - Fix loading of ontology files with no extension from onto_path - Fix properties defined with type ‘RDF Property’ and subproperty of ‘OWL Data/Object/Annotation Property’ - Support old SQLite3 versions that do not accept WITHOUT ROWID - Fix reference to undeclared entities (they were replaced by None, now by their IRI) - Fix loading and saving ontologies whose base IRI ends with / - Fix RDF query using string

The new version be downloaded from PyPI (Python Package Index): https://pypi.python.org/pypi/Owlready2

Cerealizer 0.8.2

Cerealizer 0.8.2 is out!

This is a new bugfix release for pip. Get it here: https://pypi.org/project/Cerealizer/

Two papers and a prize at iV 2018!

in Works

I presented my works on rainbow boxes at the Information Visualisation (iV) 2018 conference.

The first paper, “A new diagram for amino acids: User study comparing rainbow boxes to Venn/Euler diagram”, is available here and the presentation there.

The second paper, “Visualizing symmetric square matrices with rainbow boxes: methods and application to character co-occurrence matrices in literary texts”, is available here and the presentation there. And this second paper win a Best Paper award!

Owlready2 0.9 has been released!

Owlready is a Python module for ontology-oriented programming. It can load OWL 2.0 ontologies and manipulate them transparently in Python.

This new version allows the use of PostgresQL instead of SQLite3 (however, performances are usually lower). It also facilitate the access to SOME restrictions on classes, using the dotted notation “class.property”.

Here are the changes in version 0.9:

  • PostgresQL backend (in addition to SQLite3)
  • Add ‘exclusive = False’ option for SQLite3 backend (slower, but allows multiple uses)
  • Use unique index in sqlite3 quadstore on resources table
  • Optimize sqlite3 quadstore by caching IRI dict (5% faster)
  • Add == support for class construct
  • Add get_namespace() support on World
  • Add ‘existential restrictions as class properties’ feature
  • Bugfixes: - Fix imported ontologies - Fix saving ontologies in onto_path - Fix clear() on CallbackList - Fix bug in Class IRI in ontologies whose base IRI ends with a / - Fix imported ontologies in ontologies whose base IRI ends with a /

The new version be downloaded from PyPI (Python Package Index): https://pypi.python.org/pypi/Owlready2

The great table of ontologies

This big table summarize 5 notations used with formal ontologies in OWL: description logics, the syntax of the Protégé editor, the syntax of Owlready2 in Python, and the semantics in first-order logic and in set formula. Keep on hand when working on formal ontologies!

You can download the great table of ontologies.

Owlready2 0.8 has been released!

Owlready is a Python module for ontology-oriented programming. It can load OWL 2.0 ontologies and manipulate them transparently in Python.

Here are the changes in versions 0.6, 0.7 and 0.8 (the first two have lasted only a few hours):

  • Add set_datatype_iri() global function for associating a Python datatype to an IRI
  • Add nquads ontology format (useful for debugging)
  • Add support for dir() on individuals
  • Add support for ontology using https: protocol (thanks Samourkasidis Argyrios)
  • Add observe module (for registering callback when the ontology is modified)
  • Improve docs
  • Bugfixes: - Align Python floats with xsd:decimal rather than xsd:double, finally, because decimal accepts int too - Fix Class.instances() so as it returns instances of subclasses (as indicated in the doc) - Fix direct assignation to Ontology.imported_ontologies - Fix a bug in reasoning, when adding deduced facts between one loaded and one non-loaded entity - Fix search(prop = “value”) when value is a string and the ontology uses localized string

The new version be downloaded from PyPI (Python Package Index): https://pypi.python.org/pypi/Owlready2

Presentation at MIE 2018 on VCM icons

in Works

I presented my works about the design of a mapping between VCM icons and the MedDRA terminology at the MIE 2018 conference.

The paper “Combining Semantic and Lexical Methods for Mapping MedDRA to VCM Icons” is abailable here and the presentation there.

Happy new year 2018!

_images/voeux_2018.png

Owlready2 0.5 has been released!

Owlready is a Python module for ontology-oriented programming. It can load OWL 2.0 ontologies and manipulate them transparently in Python.

This new version is mostly a bugfix release.

It be downloaded from PyPI (Python Package Index): https://pypi.python.org/pypi/Owlready2

EditObj 3 0.1 is out !

This is the first stable release of EditObj 3.

It is a full rewrite of EditObj 2, and it now supports Qt and HTML.

It is available on PyPI (Python Package Index).