  We investigate the problem of learning description logic ontologies from
entailments via queries, using epistemic reasoning. We introduce a new learning
model consisting of epistemic membership and example queries and show that
polynomial learnability in this model coincides with polynomial learnability in
Angluin's exact learning model with membership and equivalence queries. We then
instantiate our learning framework to EL and show some complexity results for
an epistemic extension of EL where epistemic operators can be applied over the
axioms. Finally, we transfer known results for EL ontologies and its fragments
to our learning model based on epistemic reasoning.
