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We study generic semilinear Schr\"odinger systems which may be written in Hamiltonian form. In the presence of a single gauge invariance, the components of a solution may exchange mass between them while preserving the total mass. We…

Analysis of PDEs · Mathematics 2019-12-23 Simão Correia , Filipe Oliveira , Jorge D. Silva

We develop a new approach to highest weight categories $\cal{C}$ with good (and cogood) posets of weights via pseudocompact algebras by introducing ascending (and descending) quasi-hereditary pseudocompact algebras. For $\cal{C}$ admitting…

Rings and Algebras · Mathematics 2011-04-19 Frantisek Marko , Alexandr N. Zubkov

This paper presents an in-depth study of multimodal machine translation (MMT), examining the prevailing understanding that MMT systems exhibit decreased sensitivity to visual information when text inputs are complete. Instead, we attribute…

Computation and Language · Computer Science 2023-10-27 Yuxin Zuo , Bei Li , Chuanhao Lv , Tong Zheng , Tong Xiao , Jingbo Zhu

Invariance properties of semimartingales on Lie groups under a family of random transformations are defined and investigated, generalizing the random rotations of the Brownian motion. A necessary and sufficient explicit condition…

Probability · Mathematics 2018-12-31 Sergio Albeverio , Francesco C. De Vecchi , Paola Morando , Stefania Ugolini

Let S be a commutative semiring. M. Droste and P. Gastin have introduced in 2005 weighted monadic second order logic WMSOL with weights in S. They use a syntactic fragment RMSOL of WMSOL to characterize word functions (power series)…

Logic in Computer Science · Computer Science 2013-07-18 Nadia Labai , Johann A. Makowsky

Semantic textual similarity is the task of estimating the similarity between the meaning of two texts. In this paper, we fine-tune transformer architectures for semantic textual similarity on the Semantic Textual Similarity Benchmark by…

Computation and Language · Computer Science 2023-06-02 Ivan Rep , Vladimir Čeperić

We present a survey on multilingual neural machine translation (MNMT), which has gained a lot of traction in the recent years. MNMT has been useful in improving translation quality as a result of translation knowledge transfer (transfer…

Computation and Language · Computer Science 2020-01-08 Raj Dabre , Chenhui Chu , Anoop Kunchukuttan

In this paper, we recall some general properties and theorems about Translating Solitons in Semi Riemannian Manifolds. Moreover, we investigate those which are invariant by the action of a Lie group of isometries of the ambient space, by…

Differential Geometry · Mathematics 2017-09-05 Erdem Kocakuşaklı , Miguel Ortega

In this paper we consider the semi-parametric estimation of extreme quantiles of a right heavy-tail model. We propose a new Log Probability Weighted Moment estimator for extreme quantiles, which is obtained from the estimators of the shape…

Methodology · Statistics 2014-01-16 Frederico Caeiro , Dora Prata Gomes

We establish that temporal averaging over multiple observations is the degenerate case of algebraic group action with the trivial group $G=\{e\}$. A General Replacement Theorem proves that a group-averaged estimator from one snapshot…

Machine Learning · Computer Science 2026-05-05 Mitchell A. Thornton

Using a vocabulary that is shared across languages is common practice in Multilingual Neural Machine Translation (MNMT). In addition to its simple design, shared tokens play an important role in positive knowledge transfer, assuming that…

Computation and Language · Computer Science 2024-01-23 Di Wu , Christof Monz

Using the Kato-Rosenblum theorem, we describe the absolutely continuous spectrum of a class of weighted integral Hankel operators in $L^2(\mathbb R_+)$. These self-adjoint operators generalise the explicitly diagonalisable operator with the…

Spectral Theory · Mathematics 2019-10-03 Emilio Fedele , Alexander Pushnitski

A semigroup amalgam (S; T1, T2) is known to be non-embeddable if T1 and T2 are both groups (completely regular semigroups, Clifford semigroups) but S is not such. We prove some non-embeddability conditions for semigroup amalgams (S; T1, T2)…

Group Theory · Mathematics 2024-06-11 Nasir Sohail

In this article, we calculate the Ellis semigroup of a certain class of constant length substitutions. This generalises a result of Haddad and Johnson [HJ97] from the binary case to substitutions over arbitrarily large finite alphabets.…

Dynamical Systems · Mathematics 2019-12-16 Petra Staynova

We explore multitask models for neural translation of speech, augmenting them in order to reflect two intuitive notions. First, we introduce a model where the second task decoder receives information from the decoder of the first task,…

Computation and Language · Computer Science 2018-04-27 Antonios Anastasopoulos , David Chiang

We study continuity and equicontinuity of semigroups on norming dual pairs with respect to topologies defined in terms of the duality. In particular, we address the question whether continuity of a semigroup already implies (local/quasi)…

Functional Analysis · Mathematics 2014-04-09 Markus Kunze

Recent algorithmic advances in algebraic automata theory drew attention to semigroupoids (semicategories). These are mathematical descriptions of typed computational processes, but they have not been studied systematically in the context of…

Formal Languages and Automata Theory · Computer Science 2025-09-30 Attila Egri-Nagy , Chrystopher L. Nehaniv

In a recent paper [15], Hilbert space operators $T$ with the property that each sequence of the form $\{\|T^n h\|^2\}_{n=0}^{\infty}$ is conditionally positive definite in a semigroup sense were introduced. In the present paper, this line…

Functional Analysis · Mathematics 2021-10-05 Zenon Jan Jabłoński , Il Bong Jung , Eun Young Lee , Jan Stochel

We propose a multi-task learning framework to learn a joint Machine Reading Comprehension (MRC) model that can be applied to a wide range of MRC tasks in different domains. Inspired by recent ideas of data selection in machine translation,…

Computation and Language · Computer Science 2019-04-02 Yichong Xu , Xiaodong Liu , Yelong Shen , Jingjing Liu , Jianfeng Gao

We present a survey on multilingual neural machine translation (MNMT), which has gained a lot of traction in the recent years. MNMT has been useful in improving translation quality as a result of knowledge transfer. MNMT is more promising…

Computation and Language · Computer Science 2020-01-08 Raj Dabre , Chenhui Chu , Anoop Kunchukuttan