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相关论文: PYESSENCE - Generalised Coupled Quintessence Linea…

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There is some observational evidence that the dark energy may not be smooth on large scales. This makes it worth while to try and get as simple and as intuitive a picture of how dark energy perturbations behave so as to be able to better…

天体物理学 · 物理学 2009-11-10 Christopher Gordon

Polynomial chaos expansion (PCE) is a classical and widely used surrogate modeling technique in physical simulation and uncertainty quantification. By taking a linear combination of a set of basis polynomials - orthonormal with respect to…

机器学习 · 计算机科学 2026-04-01 Johannes Exenberger , Sascha Ranftl , Robert Peharz

This paper describes the algorithms, features and implementation of PyDEC, a Python library for computations related to the discretization of exterior calculus. PyDEC facilitates inquiry into both physical problems on manifolds as well as…

数值分析 · 计算机科学 2012-02-28 Nathan Bell , Anil N. Hirani

We present a python package "ScalPy" for studying the late time scalar field cosmology for a wide variety of scalar field models, namely the quintessence, tachyon and Galileon model. The package solves the autonomous system of equations for…

宇宙学与河外天体物理 · 物理学 2015-04-08 Sumit Kumar , Abhishek Jana , Anjan A. Sen

We present the open-source image processing software package PySAP (Python Sparse data Analysis Package) developed for the COmpressed Sensing for Magnetic resonance Imaging and Cosmology (COSMIC) project. This package provides a set of…

天体物理仪器与方法 · 物理学 2020-07-03 S. Farrens , A. Grigis , L. El Gueddari , Z. Ramzi , Chaithya G. R. , S. Starck , B. Sarthou , H. Cherkaoui , P. Ciuciu , J. -L. Starck

lcensemble is a high-performing, scalable and user-friendly Python package for the general tasks of classification and regression. The package implements Local Cascade Ensemble (LCE), a machine learning method that further enhances the…

机器学习 · 计算机科学 2023-08-17 Kevin Fauvel , Élisa Fromont , Véronique Masson , Philippe Faverdin , Alexandre Termier

We present PyCCE, an open-source Python library to simulate the dynamics of spin qubits in a spin bath, using the cluster-correlation expansion (CCE) method. PyCCE includes modules to generate realistic spin baths, employing coupling…

量子物理 · 物理学 2021-07-14 Mykyta Onizhuk , Giulia Galli

The coupled quintessence model with disformal couplings is treated here to mimic the $\Lambda$CDM background. Using this approach, the quintessence potential does not have to be specified. The model considers a generic fluid coupled to the…

广义相对论与量子宇宙学 · 物理学 2021-03-16 Avishek Dusoye , Alvaro de la Cruz-Dombriz , Peter Dunsby , Nelson J. Nunes

Generation and analysis of time-series data is relevant to many quantitative fields ranging from economics to fluid mechanics. In the physical sciences, structures such as metastable and coherent sets, slow relaxation processes, collective…

We study models of quintessence consisting of a number of scalar fields coupled to several dark matter components. In the case of exponential potentials the scaling solutions can be described in terms of a single field. The corresponding…

宇宙学与河外天体物理 · 物理学 2014-10-15 Luca Amendola , Tiago Barreiro , Nelson J. Nunes

We explore quintessence models of dark energy which exhibit non-minimal coupling between the dark matter and the dark energy components of the cosmic fluid. The kind of coupling chosen is inspired in scalar-tensor theories of gravity. We…

天体物理学 · 物理学 2009-11-13 Tame Gonzalez , Genly Leon , Israel Quiros

PySEMTools is a Python-based library for post-processing simulation data produced with high-order hexahedral elements in the context of the spectral element method in computational fluid dynamics. It aims to minimize intermediate steps…

计算物理 · 物理学 2025-04-18 Adalberto Perez , Siavash Toosi , Tim Felle Olsen , Stefano Markidis , Philipp Schlatter

The Python package teareduce has been developed to support teaching activities related to the reduction of astronomical data. Specifically, it serves as instructional material for students participating in practical classes on the…

We present gradiend, an open-source Python package that operationalizes the GRADIEND method for learning feature directions from factual-counterfactual MLM and CLM gradients in language models. The package provides a unified workflow for…

计算与语言 · 计算机科学 2026-03-02 Jonathan Drechsel , Steffen Herbold

BayesPy is an open-source Python software package for performing variational Bayesian inference. It is based on the variational message passing framework and supports conjugate exponential family models. By removing the tedious task of…

机器学习 · 统计学 2015-06-08 Jaakko Luttinen

$\textit{Pymc-learn}$ is a Python package providing a variety of state-of-the-art probabilistic models for supervised and unsupervised machine learning. It is inspired by $\textit{scikit-learn}$ and focuses on bringing probabilistic machine…

机器学习 · 统计学 2018-11-05 Daniel Emaasit

We present the Python Tree Tensor Network package (pyTTN) for the evaluation of dynamical properties of closed and open quantum systems that makes use of Tree Tensor Network (TTN), or equivalently the multi-layer multiconfiguration…

量子物理 · 物理学 2025-03-20 Lachlan P Lindoy , Daniel Rodrigo-Albert , Yannic Rath , Ivan Rungger

We introduce PyChEst, a Python package which provides tools for the simultaneous estimation of multiple changepoints in the distribution of piece-wise stationary time series. The nonparametric algorithms implemented are provably consistent…

统计计算 · 统计学 2021-12-21 Azadeh Khaleghi , Lukas Zierahn

We analyze some generic properties of the dark energy (DE) perturbations, in the case of a self-conserved DE fluid. We also apply a simple test (the "F-test") to compare a model to the data on large scale structure (LSS) under the…

宇宙学与河外天体物理 · 物理学 2016-11-15 Javier Grande , Ana Pelinson , Joan Sola

Bayesian inference is central to modern cosmology, yet comprehensive model comparison and tension quantification remain computationally prohibitive for many researchers. To address this, we release $\texttt{unimpeded}$, a publicly available…

宇宙学与河外天体物理 · 物理学 2026-04-03 Dily Duan Yi Ong , Will Handley