  Solar flares are highly energetic events that happen in the solar atmosphere.
They are mostly observed as X-ray or gamma-ray bursts located on the Sun's
surface. While they are known to be sites of particle acceleration, the
acceleration process(es) responsible for the observed fluxes remain unsure. The
diversity in shape and duration of the gamma-ray fluxes suggests the existence
of distinct phases of hadronic acceleration. Moreover, different acceleration
processes could explain the differences observed among flares. In this work we
search for the evidence of sub-populations within the catalog of gamma-ray
solar flares observed by Fermi-LAT. We aim at grouping flares with similar
physical properties to be able to probe theoretical models for neutrino
production within different classes of flares. We use measurements of the X-ray
and gamma-ray fluxes, as well as CMEs and SEPs, to cluster the events using a
graph-based algorithm. Furthermore, we investigate the most representative
features that characterise the identified sub-populations to allow for
qualitative analysis and model development.
