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In order to understand grain-surface chemistry, one must have a good understanding of the reaction rate parameters. For diffusion-based reactions, these parameters are binding energies of the reacting species. However, attempts to estimate…

星系天体物理 · 物理学 2022-09-28 Johannes Heyl , Elena Sellentin , Jonathan Holdship , Serena Viti

The behaviour of molecules in space is to a large extent governed by where they freeze out or sublimate. The molecular binding energy is thus an important parameter for many astrochemical studies. This parameter is usually determined with…

星系天体物理 · 物理学 2022-10-05 Torben Villadsen , Niels F. W. Ligterink , Mie Andersen

This textbook provides a systematic treatment of statistical machine learning for astronomical research through the lens of Bayesian inference, developing a unified framework that reveals connections between modern data analysis techniques…

天体物理仪器与方法 · 物理学 2025-06-17 Yuan-Sen Ting

Databases of gas and surface chemical reactions are a key tool for scientists working in a wide range of physical sciences. In Astrochemistry, databases of chemical reactions are used as inputs to chemical models to determine the abundances…

星系天体物理 · 物理学 2021-01-14 Serena Viti , Jonathan Holdship

Determining the stability of molecules and condensed phases is the cornerstone of atomistic modelling, underpinning our understanding of chemical and materials properties and transformations. Here we show that a machine learning model,…

The estimation of cosmological parameters from precision observables is an important industry with crucial ramifications for particle physics. This article discusses the statistical methods presently used in cosmological data analysis,…

高能物理 - 理论 · 物理学 2009-12-15 Andrew R Liddle

Recently supervised machine learning has been ascending in providing new predictive approaches for chemical, biological and materials sciences applications. In this Perspective we focus on the interplay of machine learning algorithm with…

The evaporation of molecules from dust grains is crucial to understand some key aspects of the star- and the planet-formation processes. During the warm-up phase the presence of young protostellar objects induces molecules to evaporate from…

星系天体物理 · 物理学 2020-11-25 T. Grassi , S. Bovino , P. Caselli , G. Bovolenta , S. Vogt-Geisse , B. Ercolano

Advanced telescopes, such as ALMA and JWST, are likely to show that the chemical universe may be even more complex than currently observed, requiring astrochemical modelers to improve their models to account for the impact of new data.…

星系天体物理 · 物理学 2017-08-07 E M Penteado , C Walsh , H M Cuppen

Binding energies (BEs) of adsorbates on interstellar dust grains critically control adsorption, desorption, diffusion, and surface reactivity, and therefore strongly influence astrochemical models of star- and planet-forming regions. While…

化学物理 · 物理学 2026-02-12 Anant Vaishnav , Niels M. Mikkelsen , Mie Andersen

Recent laboratory measurements have confirmed that chemical desorption (desorption of products due to exothermic surface reactions) can be an efficient process. The impact of including this process into gas-grain chemical models entirely…

星系天体物理 · 物理学 2017-01-24 V. Wakelam , J. -C. Loison , R. Mereau , M. Ruaud

Bringing a high-dimensional dataset into science-ready shape is a formidable challenge that often necessitates data compression. Compression has accordingly become a key consideration for contemporary cosmology, affecting public data…

宇宙学与河外天体物理 · 物理学 2020-08-25 Alan Heavens , Elena Sellentin , Andrew Jaffe

Machine learning methods usually depend on internal parameters -- so called hyperparameters -- that need to be optimized for best performance. Such optimization poses a burden on machine learning practitioners, requiring expert knowledge,…

化学物理 · 物理学 2020-04-03 Annika Stuke , Patrick Rinke , Milica Todorović

The answers to many unsolved problems lie in the intractable chemical space of molecules and materials. Machine learning techniques are rapidly growing in popularity as a way to compress and explore chemical space efficiently. One of the…

化学物理 · 物理学 2020-01-06 John E. Herr , Kevin Koh , Kun Yao , John Parkhill

Adhesive joints are increasingly used in industry for a wide variety of applications because of their favorable characteristics such as high strength-to-weight ratio, design flexibility, limited stress concentrations, planar force transfer,…

Correctly setting the parameters of a production machine is essential to improve product quality, increase efficiency, and reduce production costs while also supporting sustainability goals. Identifying optimal parameters involves an…

机器学习 · 计算机科学 2025-03-24 Philipp Wagner , Tobias Nagel , Philipp Leube , Marco F. Huber

The ability to explain decisions made by machine learning models remains one of the most significant hurdles towards widespread adoption of AI in highly sensitive areas such as medicine, cybersecurity or autonomous driving. Great interest…

机器学习 · 计算机科学 2024-12-17 Maximilian P Niroomand , David J Wales

Due to the wide range of timescales that are present in macromolecular systems, hierarchical multiscale strategies are necessary for their computational study. Coarse-graining (CG) allows to establish a link between different system…

Parameter learning is the technique for obtaining the probabilistic parameters in conditional probability tables in Bayesian networks from tables with (observed) data --- where it is assumed that the underlying graphical structure is known.…

人工智能 · 计算机科学 2018-10-16 Bart Jacobs

Approximate Bayesian Computation is widely used to infer the parameters of discrete-state continuous-time Markov networks. In this work, we focus on models that are governed by the Chemical Master Equation (the CME). Whilst originally…

定量方法 · 定量生物学 2020-01-10 Christopher Lester
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