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Hydrodynamic simulations have become irreplaceable in modern cosmology for exploring complex systems and making predictions to steer future observations. In Chapter 1, we begin with a philosophical discussion on the role of simulations in…

Cosmology and Nongalactic Astrophysics · Physics 2023-12-20 Edoardo Altamura

We consider some computationally efficient and provably correct algorithms with near-optimal sample-complexity for the problem of noisy non-adaptive group testing. Group testing involves grouping arbitrary subsets of items into pools. Each…

Information Theory · Computer Science 2016-11-18 Chun Lam Chan , Sidharth Jaggi , Venkatesh Saligrama , Samar Agnihotri

Fish schooling is often modeled with self-propelled particles subject to phenomenological behavioral rules. Although fish are known to sense and exploit flow features, these models usually neglect hydrodynamics. Here, we propose a novel…

Biological Physics · Physics 2018-05-16 Audrey Filella , François Nadal , Clément Sire , Eva Kanso , Christophe Eloy

The study of trajectories is often a core task in several research fields. In environmental modelling, trajectories are crucial to study fluid pollution, animal migrations, oil slick patterns or land movements. In this contribution, we…

Computation · Statistics 2022-09-23 A. Reyes , G. Viera-López , J. J. Morgado-Vega , E. Altshuler

Natural microbial communities contain hundreds to thousands of interacting species. For this reason, computational simulations are playing an increasingly important role in microbial ecology. In this manuscript, we present a new…

Populations and Evolution · Quantitative Biology 2020-07-01 Robert Marsland , Wenping Cui , Joshua Goldford , Pankaj Mehta

Easily accessible sensors, like drones with diverse onboard sensors, have greatly expanded studying animal behavior in natural environments. Yet, analyzing vast, unlabeled video data, often spanning hours, remains a challenge for machine…

Computer Vision and Pattern Recognition · Computer Science 2024-07-08 Duc Pham , Matthew Hansen , Félicie Dhellemmes , Jens Krause , Pia Bideau

We determine the basic phase diagram of the fish school model derived from data by Gautrais etal (PLoS Comp. Biol. 8, e1002678 (2012)), exploring its parameter space beyond the parameter values determined experimentally on groups of barred…

Quantitative Methods · Quantitative Biology 2015-02-03 Daniel S. Calovi , Ugo Lopez , Sandrine Ngo , Clément Sire , Hugues Chaté , Guy Theraulaz

While real-world problems are often challenging to analyze analytically, deep learning excels in modeling complex processes from data. Existing optimization frameworks like CasADi facilitate seamless usage of solvers but face challenges…

Systems and Control · Electrical Eng. & Systems 2023-12-12 Tim Salzmann , Jon Arrizabalaga , Joel Andersson , Marco Pavone , Markus Ryll

Flow matching has emerged as a competitive framework for learning high-quality generative policies in robotics; however, we find that generalisation arises and saturates early along the flow trajectory, in accordance with recent findings in…

Robotics · Computer Science 2026-03-03 Zidong Chen , Zihao Guo , Peng Wang , ThankGod Itua Egbe , Yan Lyu , Chenghao Qian

The sparse identification of nonlinear dynamics (SINDy) approach can discover the governing equations of dynamical systems based on measurement data, where the dynamical model is identified as the sparse linear combination of the given…

Artificial intelligence has advanced global weather forecasting, outperforming traditional numerical models in both accuracy and computational efficiency. Nevertheless, extending predictions beyond subseasonal timescales requires the…

Atmospheric and Oceanic Physics · Physics 2025-08-18 Jeong-Hwan Kim , Daehyun Kang , Young-Min Yang , Jae-Heung Park , Yoo-Geun Ham

This paper introduces an efficient approach to reduce the computational cost of simulating collective behaviors, such as fish schooling, using Individual-Based Models (IBMs). The proposed technique employs adaptive and dynamic…

Populations and Evolution · Quantitative Biology 2023-11-07 Salah Alrabeei , Talal Rahman , Sam Subbey

There is current interest in investigating which variables play an important role in the physical processes with an open composite quan- tum system that ranges from the foundational issues to the tasks of diverse applications in quantum…

Quantum Physics · Physics 2016-07-26 Momir Arsenijevic , Jasmina Jeknic-Dugic , Miroljub Dugic

Modern computing has enhanced our understanding of how social interactions shape collective behaviour in animal societies. Although analytical models dominate in studying collective behaviour, this study introduces a deep learning model to…

Machine Learning · Computer Science 2024-03-19 Vaios Papaspyros , Ramón Escobedo , Alexandre Alahi , Guy Theraulaz , Clément Sire , Francesco Mondada

Entropy governs molecular self-assembly, phase transitions, and material stability, yet remains challenging to quantify and directly control in molecular systems. Here, we demonstrate that the computable information density (CID), a data…

Statistical Mechanics · Physics 2026-02-27 Ashley Z. Guo , Kaelyn Chang , Nicholas J. Corrente

Oceanographers rely on visual analysis to interpret model simulations, identify events and phenomena, and track dynamic ocean processes. The ever increasing resolution and complexity of ocean data due to its dynamic nature and multivariate…

Visual analysis is well adopted within the field of oceanography for the analysis of model simulations, detection of different phenomena and events, and tracking of dynamic processes. With increasing data sizes and the availability of…

Collective movements are pervasive behaviours among social organisms and have led to the development of many models. However, modelling animal trajectories and social interactions in simple bounded environments remains a challenge.…

Neurons and Cognition · Quantitative Biology 2018-11-28 Leo Cazenille , Nicolas Bredeche , José Halloy

Quantifying fish community structure is essential for understanding biodiversity and ecosystem responses in a changing environment, yet existing survey methods provide limited high-frequency, quantitative observations. Conventional…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Kota Ishikawa , Takuma Masui , Keita Koeda , Rickdane Gomez , Lucas Yutaka Kimura , Michio Kondoh

We propose that unconstrained artificial intelligence obeys a Second Law analogous to thermodynamics, where ethical entropy, defined as a measure of divergence from intended goals, increases spontaneously without continuous alignment work.…

Artificial Intelligence · Computer Science 2025-11-19 Samih Fadli