  The article presents the torchosr package - a Python package compatible with
PyTorch library - offering tools and methods dedicated to Open Set Recognition
in Deep Neural Networks. The package offers two state-of-the-art methods in the
field, a set of functions for handling base sets and generation of derived sets
for the Open Set Recognition task (where some classes are considered unknown
and used only in the testing process) and additional tools to handle datasets
and methods. The main goal of the package proposal is to simplify and promote
the correct experimental evaluation, where experiments are carried out on a
large number of derivative sets with various Openness and class-to-category
assignments. The authors hope that state-of-the-art methods available in the
package will become a source of a correct and open-source implementation of the
relevant solutions in the domain.
