Zobrazeno 1 - 10
of 189
pro vyhledávání: '"Athanasiadis Christos"'
Autor:
Fletcher, Luan, van der Klis, Robert, Sedláček, Martin, Vasilev, Stefan, Athanasiadis, Christos
Publikováno v:
Transactions on Machine Learning Research 2024
The growing reproducibility crisis in machine learning has brought forward a need for careful examination of research findings. This paper investigates the claims made by Lei et al. (2023) regarding their proposed method, LICO, for enhancing post-hoc
Externí odkaz:
http://arxiv.org/abs/2410.13989
This article concerns the face enumeration of augmented Bergman complexes of matroids, introduced by Braden, Huh, Matherne, Proudfoot and Wang. We prove that the augmented Bergman complex of any matroid admits a convex ear decomposition and deduce th
Externí odkaz:
http://arxiv.org/abs/2410.08812
Autor:
Tsoumplekas, Georgios, Athanasiadis, Christos L., Doukas, Dimitrios I., Chrysopoulos, Antonios, Mitkas, Pericles A.
Despite the rapid expansion of smart grids and large volumes of data at the individual consumer level, there are still various cases where adequate data collection to train accurate load forecasting models is challenging or even impossible. This pape
Externí odkaz:
http://arxiv.org/abs/2406.05887
The concept of a fully interlacing matrix of formal power series with real coefficients is introduced. This concept extends and strengthens that of an interlacing sequence of real-rooted polynomials with nonnegative coefficients, in the special case
Externí odkaz:
http://arxiv.org/abs/2404.12989
Autor:
Athanasiadis, Christos A.
The local $h$-polynomial was introduced by Stanley as a fundamental enumerative invariant of a triangulation $\Delta$ of a simplex. This polynomial is known to have nonnegative and symmetric coefficients and is conjectured to be $\gamma$-positive whe
Externí odkaz:
http://arxiv.org/abs/2402.06219
The coefficients of the chain polynomial of a finite poset enumerate chains in the poset by their number of elements. It has been a challenging open problem to determine which posets have real-rooted chain polynomials. Two new classes of posets, name
Externí odkaz:
http://arxiv.org/abs/2307.04839
Autor:
Athanasiadis, Christos A.
The Eulerian transformation is the linear operator on polynomials in one variable with real coefficients which maps the powers of this variable to the corresponding Eulerian polynomials. The derangement transformation is defined similarly. Br\"and\'e
Externí odkaz:
http://arxiv.org/abs/2302.00754
Autor:
Athanasiadis, Christos A.
The theta polynomial of a triangulation $\Delta$ of a ball with boundary $\partial \Delta$ is defined as the difference of the $h$-polynomial of $\partial \Delta$ from the $h$-polynomial of $\Delta$. A basic theory for the face enumeration of triangu
Externí odkaz:
http://arxiv.org/abs/2209.01674
Autor:
Ambekar, Sameer, Tafuro, Matteo, Ankit, Ankit, van der Mast, Diego, Alence, Mark, Athanasiadis, Christos
With the usage of appropriate inductive biases, Counterfactual Generative Networks (CGNs) can generate novel images from random combinations of shape, texture, and background manifolds. These images can be utilized to train an invariant classifier, a
Externí odkaz:
http://arxiv.org/abs/2208.04226
The coefficients of the chain polynomial of a finite poset enumerate chains in the poset by their number of elements. The chain polynomials of the partition lattices and their standard type $B$ analogues are shown to have only real roots. The real-ro
Externí odkaz:
http://arxiv.org/abs/2205.03796