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In this short note we review deterministic simulation of biochemical pathways, i.e. networks of biochemical reactions obeying the law of mass action. It is meant as a basis for the MATLAB code, written by the author, which permits easy…

数值分析 · 数学 2012-08-22 Andrea Cangiani

The analysis of the structure of chemical reaction networks is crucial for a better understanding of chemical processes. Such networks are well described as hypergraphs. However, due to the available methods, analyses regarding network…

计算复杂性 · 计算机科学 2013-09-30 Rolf Fagerberg , Christoph Flamm , Daniel Merkle , Philipp Peters , Peter F. Stadler

In many stochastic simulations of biochemical reaction networks, it is desirable to ``coarse-grain'' the reaction set, removing fast reactions while retaining the correct system dynamics. Various coarse-graining methods have been proposed,…

定量方法 · 定量生物学 2009-11-13 M. J. Morelli , R. J. Allen , S. Tanase-Nicola , P. R. ten Wolde

We present an elaborate framework for formally modelling pathways in chemical reaction networks on a mechanistic level. Networks are modelled mathematically as directed multi-hypergraphs, with vertices corresponding to molecules and…

分子网络 · 定量生物学 2017-12-08 Jakob L. Andersen , Christoph Flamm , Daniel Merkle , Peter F. Stadler

This paper addresses learning of sparse structural changes or differential network between two classes of non-paranormal graphical models. We assume a multi-source and heterogeneous dataset is available for each class, where the covariance…

机器学习 · 计算机科学 2024-10-04 Mojtaba Nikahd , Seyed Abolfazl Motahari

Dynamical system models of complex biochemical reaction networks are usually high-dimensional, nonlinear, and contain many unknown parameters. In some cases the reaction network structure dictates that positive equilibria must be unique for…

动力系统 · 数学 2008-09-09 Gheorghe Craciun , J. William Helton , Ruth J. Williams

We present a computational procedure to characterize the signs of sensitivities of steady states to parameter perturbations in chemical reaction networks.

定量方法 · 定量生物学 2013-12-31 Eduardo D. Sontag

It has been known for nearly a decade that deterministically modeled reaction networks that are weakly reversible and consist of a single linkage class have trajectories that are bounded from both above and below by positive constants (so…

概率论 · 数学 2020-01-17 David F. Anderson , Daniele Cappelletti , Jinsu Kim

The ability to reason beyond established knowledge allows Organic Chemists to solve synthetic problems and to invent novel transformations. Here, we propose a model which mimics chemical reasoning and formalises reaction prediction as…

人工智能 · 计算机科学 2017-12-27 Marwin H. S. Segler , Mark P. Waller

This paper studies a system of Ordinary Differential Equations modeling a chemical reaction network and derives from it a simulation tool mimicking Loss of Function and Gain of Function mutations found in cancer cells. More specifically,…

分子网络 · 定量生物学 2020-04-07 Sara Sommariva , Giacomo Caviglia , Michele Piana

Based on the theory of stochastic chemical kinetics, the inherent randomness and stochasticity of biochemical reaction networks can be accurately described by discrete-state continuous-time Markov chains. The analysis of such processes is,…

数值分析 · 数学 2014-10-14 Andreychenko Alexander , Mikeev Linar , Wolf Verena

Substrate modification networks are ubiquitous in living, biochemical systems. A higher-level hypergraph "skeleton" captures key information about which substrates are transformed in the presence of modification-specific enzymes. Many…

分子网络 · 定量生物学 2025-11-18 Badal Joshi , Tung D. Nguyen

Recent work on multilingual neural machine translation reported competitive performance with respect to bilingual models and surprisingly good performance even on (zeroshot) translation directions not observed at training time. We…

计算与语言 · 计算机科学 2018-11-06 Surafel M. Lakew , Quintino F. Lotito , Matteo Negri , Marco Turchi , Marcello Federico

Surfaces serve as highly efficient catalysts for a vast variety of chemical reactions. Typically, such surface reactions involve billions of molecules which diffuse and react over macroscopic areas. Therefore, stochastic fluctuations are…

统计力学 · 物理学 2007-10-12 B. Barzel , O. Biham

A reaction network together with a choice of rate constants uniquely gives rise to a system of differential equations, according to the law of mass-action kinetics. On the other hand, different networks can generate the same dynamical…

动力系统 · 数学 2021-05-18 Gheorghe Craciun , Jiaxin Jin , Polly Y. Yu

Mistranslated numbers have the potential to cause serious effects, such as financial loss or medical misinformation. In this work we develop comprehensive assessments of the robustness of neural machine translation systems to numerical text…

计算与语言 · 计算机科学 2021-07-20 Jun Wang , Chang Xu , Francisco Guzman , Ahmed El-Kishky , Benjamin I. P. Rubinstein , Trevor Cohn

Steady state is an essential concept in reaction networks. Its stability reflects fundamental characteristics of several biological phenomena such as cellular signal transduction and gene expression. Because biochemical reactions occur at…

分子网络 · 定量生物学 2019-04-19 Tan Van Vu , Yoshihiko Hasegawa

In chemical reaction network theory, ordinary differential equations are used to model the temporal change of chemical species concentration. As the functional form of these ordinary differential equations systems is derived from an…

分子网络 · 定量生物学 2025-02-27 Anna C. M. Thöni , William E. Robinson , Yoram Bachrach , Wilhelm T. S. Huck , Tal Kachman

It has recently been shown that structural conditions on the reaction network, rather than a 'fine-tuning' of system parameters, often suffice to impart 'absolute concentration robustness' on a wide class of biologically relevant,…

概率论 · 数学 2014-01-20 David F. Anderson , German Enciso , Matthew Johnston

The well-known Deficiency One Theorem gives structural conditions on a chemical reaction network under which, for any set of parameter values, the steady states of the corresponding mass action system may be easily characterized. It is also…

最优化与控制 · 数学 2016-03-02 Matthew D. Johnston