19 citations · 26 across the 4 of their papers we have counts for
4 papers
Finding Influential Training Samples for Gradient Boosted Decision Trees
Boris Sharchilev, Yury Ustinovsky, Pavel Serdyukov +1
We address the problem of finding influential training samples for a particular case of tree ensemble-based models, e.g., Random Forest (RF) or Gradient Boosted Decision Trees (GBD…
On almost free torus actions and Horrocks conjecture
Yury Ustinovsky
We construct a model for cohomology of a space equipped with a torus action, whose homotopy orbit space is formal. This model represents Koszul complex of its equiv…
Toral rank conjecture for moment-angle complexes
Yury Ustinovsky
We consider an operation K \to L(K) on the set of simplicial complexes, which we call the "doubling operation". This combinatorial operation has been recently brought into toric to…
Doubling operation for polytopes and torus actions
Yury Ustinovsky
In this note we give the definition of the "doubling operation" for simple polytopes, find the formula for the h-polynomial of new polytope.As an application of this operation we e…