Dimitar Jetchev
YOU?
Author Swipe
View article: XorSHAP: Privacy-Preserving Explainable AI for Decision Tree Models
XorSHAP: Privacy-Preserving Explainable AI for Decision Tree Models Open
Explainable AI (XAI) refers to the development of AI systems and machine learning models in a way that humans can understand, interpret and trust the predictions, decisions and outputs of these models. A common approach to explainability i…
View article: XORBoost: Tree Boosting in the Multiparty Computation Setting
XORBoost: Tree Boosting in the Multiparty Computation Setting Open
We present a novel protocol XORBoost for both training gradient boosted tree models and for using these models for inference in the multiparty computation (MPC) setting. Our protocol supports training for generically split datasets (vertic…
View article: Cyclic Isogenies for Abelian Varieties with Real Multiplication
Cyclic Isogenies for Abelian Varieties with Real Multiplication Open
We study quotients of principally polarized abelian varieties with real multiplication by finite Galois-stable subgroups and describe when these quotients are principally polarizable. We use this character-ization to provide an algorithm t…
View article: CHIMERA: Combining Ring-LWE-based Fully Homomorphic Encryption Schemes
CHIMERA: Combining Ring-LWE-based Fully Homomorphic Encryption Schemes Open
This paper proposes a practical hybrid solution for combining and switching between three popular Ring-LWE-based FHE schemes: TFHE, B/FV and HEAAN. This is achieved by first mapping the different plaintext spaces to a common algebraic stru…
View article: Horizontal isogeny graphs of ordinary abelian varieties and the discrete logarithm problem
Horizontal isogeny graphs of ordinary abelian varieties and the discrete logarithm problem Open
Fix an ordinary abelian variety defined over a finite field. The ideal class group of its endomorphism ring acts freely on the set of isogenous varieties with same endomorphism ring, by complex multiplication. Any subgroup of the class gro…
View article: Vertical Distribution Relations for Special Cycles on Unitary Shimura Varieties
Vertical Distribution Relations for Special Cycles on Unitary Shimura Varieties Open
We consider cycles on three-dimensional Shimura varieties attached to unitary groups, defined over extensions of a complex multiplication (CM) field $E$, which appear in the context of the conjectures of Gan et al. [6]. We establish a vert…
View article: Cyclic Isogenies for Abelian Varieties with Real Multiplication
Cyclic Isogenies for Abelian Varieties with Real Multiplication Open
We study quotients of principally polarized abelian varieties with real multiplication by Galois-stable finite subgroups and describe when these quotients are principally polarizable. We use this characterization to provide an algorithm to…
View article: The Birch and Swinnerton–Dyer formula for elliptic curves of analytic rank one
The Birch and Swinnerton–Dyer formula for elliptic curves of analytic rank one Open
Let E/Q be a semistable elliptic curve such that ord s=1 L(E, s)
View article: Horizontal Distribution Relations for Special Cycles on Unitary Shimura Varieties: Split Case
Horizontal Distribution Relations for Special Cycles on Unitary Shimura Varieties: Split Case Open
We study the local behavior of special cycles on Shimura varieties for $\mathbf{U}(2, 1) \times \mathbf{U}(1, 1)$ in the setting of the Gan-Gross-Prasad conjectures at primes $τ$ of the totally real field of definition of the unitary space…