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Related papers: Semi-Analytic Galaxy Evolution (SAGE): Model Calib…

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The significant variability in cell size and shape continues to pose a major obstacle in computer-assisted cancer detection on gigapixel Whole Slide Images (WSIs), due to cellular heterogeneity. Current CNN-Transformer hybrids use static…

Image and Video Processing · Electrical Eng. & Systems 2026-03-24 Gia Huy Thai , Hoang-Nguyen Vu , Anh-Minh Phan , Quang-Thinh Ly , Tram Dinh , Thi-Ngoc-Truc Nguyen , Nhat Ho

Self-evolving language-model agents must decide what to learn next and how to preserve what they have learned across iterations. Existing systems typically carry this cross-iteration knowledge as natural-language feedback, flat episodic…

Artificial Intelligence · Computer Science 2026-05-12 Ruiyi Yang , Zechen Li , Hao Xue , Imran Razzak , Flora D. Salim

Galaxy simulations have come a long way from the early days of simple N-body calculations, which considered only gravitational interactions, to the complex, multi-physics models used today. Beginning with initial conditions representative…

Astrophysics of Galaxies · Physics 2025-07-15 Robert Feldmann , Rebekka Bieri

We extend our previous work focused at $z\sim0$, studying the redshift evolution of galaxy dynamical properties using the state-of-the-art semi-analytic model GAEA: we show that the predicted size-mass relation for disky/star forming and…

Astrophysics of Galaxies · Physics 2019-06-26 Anna Zoldan , Gabriella De Lucia , Lizhi Xie , Fabio Fontanot , Michaela Hirschmann

We introduce SAGE; a Generative LLM for inferring attribute values for products across world-wide e-Commerce catalogs. We introduce a novel formulation of the attribute-value prediction problem as a Seq2Seq summarization task, across…

Information Retrieval · Computer Science 2023-09-13 Athanasios N. Nikolakopoulos , Swati Kaul , Siva Karthik Gade , Bella Dubrov , Umit Batur , Suleiman Ali Khan

We compute, including a current state-of-the-art treatment of hydrodynamical processes, heating and cooling, a variety of cosmological models into the extreme nonlinear phase to enable comparisons with observations. First, we note the…

Astrophysics · Physics 2009-10-28 Jeremiah P. Ostriker , Renyue Cen

Here we introduce GAMESH, a novel pipeline which implements self-consistent radiative and chemical feedback in a computational model of galaxy formation. By combining the cosmological chemical-evolution model GAMETE with the radiative…

Astrophysics of Galaxies · Physics 2015-03-09 L. Graziani , S. Salvadori , R. Schneider , D. Kawata , M. de Bennassuti , A. Maselli

We present an accelerated calibration framework for semi-analytic galaxy formation models, demonstrated with Galacticus. Rather than fitting directly to properties such as the low-redshift stellar mass function (SMF) - which requires…

Astrophysics of Galaxies · Physics 2026-01-19 Andrew Robertson , Andrew Benson

The most massive and luminous galaxies in the Universe serve as powerful probes to study the formation of structure, the assembly of mass, and cosmology. However, their detailed formation and evolution is still barely understood. Here we…

We present a detailed comparison between the galaxy populations within a massive cluster, as predicted by hydrodynamical SPH simulations and by a semi-analytic model (SAM) of galaxy formation. Both models include gas cooling and a simple…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 A. Saro , G. De Lucia , S. Borgani , K. Dolag

Evidence for a bar at the center of the Milky Way triggered a renewed enthusiasm for dynamical modelling of the Galactic bar-bulge. Our goal is to compare the kinematics of a sample of tracers, planetary nebulae, widely distributed over the…

In this work we update the L-Galaxies semi-analytic model (SAM) to better follow the physical processes responsible for the growth of bulges via disc instabilities (leading to pseudo-bulges) and mergers (leading to classical bulges). We…

Astrophysics of Galaxies · Physics 2019-10-08 Dimitrios Irodotou , Peter A. Thomas , Bruno M. Henriques , Mark T. Sargent , Jessica M. Hislop

We present the basic features and preliminary results of the interface between our spectro-photometric model GRASIL (that calculates galactic SED from the UV to the sub-mm with a detailed computation of dust extinction and thermal…

Astrophysics · Physics 2007-05-23 L. Silva , G. L. Granato , A. Bressan , C. G. Lacey , C. M. Baugh , S. Cole , C. S. Frenk

We predict the evolution of galaxy scaling relationships from cosmological, hydrodynamical simulations, that reproduce the scaling relations of present-day galaxies. Although we do not assume co-evolution between galaxies and black holes a…

Astrophysics of Galaxies · Physics 2016-09-07 Philip Taylor , Chiaki Kobayashi

In this Letter, we analyse the predicted physical properties of massive galaxies, in the framework of recent semi-analytic models of galaxy formation. All models considered account for winds driven by supernovae explosions and suppression…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Gabriella De Lucia , Stefano Borgani

The evolution of the galaxy stellar mass function is especially useful to test the current model of galaxy formation. Observational data have revealed a few inconsistencies with predictions from the $\Lambda {\rm CDM}$ model. For example,…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Xi Kang , WeiPeng Lin , Ramin A. Skibba , Dongni Chen

We present a suite of high-resolution cosmological zoom-in simulations to $z=4$ of a $10^{12}\,{\rm M}_{\odot}$ halo at $z=0$, obtained using seven contemporary astrophysical simulation codes widely used in the numerical galaxy formation…

We have updated the Munich galaxy formation model to the Planck first-year cosmology, while modifying the treatment of baryonic processes to reproduce recent data on the abundance and passive fractions of galaxies from z= 3 down to z=0.…

Astrophysics of Galaxies · Physics 2015-11-23 Bruno Henriques , Simon White , Peter Thomas , Raul Angulo , Qi Guo , Gerard Lemson , Volker Springel , Roderik Overzier

All modern galaxy formation models employ stochastic elements in their sub-grid prescriptions to discretise continuous equations across the time domain. In this paper, we investigate how the stochastic nature of these models, notably star…

We introduce the "Engineering Dwarfs at Galaxy formation's Edge" (EDGE) project to study the cosmological formation and evolution of the smallest galaxies in the Universe. In this first paper, we explore the effects of resolution and…