- String diagrams and categorification, Interactions of Quantum Affine Algebras with Cluster Algebras, Current Algebras and Categorification, Washington, D.C., June 2–8, 2018 (notes).
- Categorification of Heisenberg algebras, South China University of Technology, Guangzhou, China, January 5–9, 2015.
- Introduction to categorification, Winter School I, New Directions in Lie Theory Thematic Semester, Centre de Recherches Mathématiques, Montréal, January 6–17, 2014.
- Geometric realizations of crystals, University of Cologne, October 4–8, 2010.
- Geometric realizations of crystals, Geometric representation theory and extended affine Lie algebras (Fields Institute summer school), University of Ottawa, June 15–27, 2009 (notes).