
"Nonnegative rank and the EM algorithm" at CASTA2014, Kyoto, Japan, January 2014



"Nonnegative matrix rank" at MPIM Computational Algebraic Geometry Seminar, Bonn, Germany, September 2013

"Phylogenetic semigroups" at MPIM Student Seminar, Bonn, Germany, July 2013

"Ehrhart polynomials, groupbased models and BerensteinZelevinsky triangles" at MDS Monday lecture, Berlin, Germany, May 2013


"Lineaarne optimeerimine" at Teaduspäev, Pärnu, Estonia, April 2013

"Groupbased models, BerensteinZelevinsky triangles and conformal block algebras (joint talk with Chris Manon)" at PEAKs, Riezlern, Austria, March 2013

"Conformal block algebras, BerensteinZelevinsky triangles and groupbased models" at Algebraic Geometry Seminar, Berlin, Germany, December 2012


"Generators of phylogenetic semigroups" at Algebra Seminar, Tartu, Estonia, June 2012



"Lattice polytopes of phylogenetic trees" at Discrete Geometry Seminar, Berlin, Germany, March 2011



"Trees, Z/2, and lattice points" at Lattice polytopes seminar, Berlin, Germany, February 2010

"Abstraktsed kloonid ja operaadid" at Estonian Mathematical Society meeting, Tallinn, Estonia, March 2008 [ slides]