相关实验视频
Updated: Jun 30, 2025

12:00
A Practical Guide to Phylogenetics for Nonexperts
Published on: February 5, 2014
35.3K
红外线:生物信息学的一个声明树分解驱动的框架
Hua-Ting Yao1,2,3, Bertrand Marchand4, Sarah J Berkemer4,5
1LIX, CNRS UMR 7161, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France. htyao@tbi.univie.ac.at.
Algorithms for molecular biology : AMB
|March 17, 2024
概括
红外框架通过使用声明式建模和通用算法来简化复杂的生物信息学问题,用于精确的优化和受控采样. 这使得专业应用程序的高效开发能够在没有定制编码的情况下实现.
科学领域:
- 生物信息学是一种生物信息学.
- 计算生物学 计算生物学
- 算法开发 算法开发
背景情况:
- 动态编程 (DP) 为生物信息学提供了精确的解决方案,但需要专门的,复杂的实现.
- 现有的DP方法往往难以适应问题设置的变化.
研究的目的:
- 引入红外框架,以概括和简化DP在生物信息学中的应用.
- 为各种生物信息任务提供精确优化和受控采样工具的高效开发.
主要方法:
- 红外模型问题作为稀疏特征网络,约束网络的概括.
- 在特征网络的树分解上使用通用的集群树消除算法.
- 在变量数量上实现线性复杂性,在树宽度上实现指数复杂性.
主要成果:
- 红外软件促进了Python中的生物信息学应用程序的快速开发.
- 问题以声明方式建模,并通过通用DP算法自动解决.
- 已证明的应用包括RNA设计,序列结构对齐,基因推理和编码序列设计.
结论:
- 红外线为解决广泛的生物信息学问题提供了强大而灵活的框架.
- 提供与专业算法可比的实用经验效率.
- 降低了开发先进计算生物学工具的进入障碍.
相关概念视频
Evolutionary Relationships through Genome Comparisons
5.7K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
5.7K
IR Frequency Region: Fingerprint Region
880
IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the...
880
Infrared (IR) Spectroscopy: Overview
1.7K
When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...
Different compounds display unique properties due to their...
1.7K
Applications of IR Spectroscopy: Overview
613
The non-destructive nature and ability to provide valuable chemical information make IR spectroscopy a versatile technique with broad applications in various scientific and industrial fields. IR spectroscopy is commonly used to identify and characterize organic and inorganic compounds. It provides information about the functional groups present in a molecule and the bonding between atoms. This helps in the structural elucidation of compounds during organic synthesis, pharmaceutical research,...
613
Applications Of NMR In Biology
3.7K
Nuclear magnetic resonance (NMR) spectroscopy is a very valuable analytical technique for researchers. It has been used for more than 50 years as an analytical tool. F. Bloch and E. Purcell formulated NMR in 1946 and won the 1952 Nobel Prize in Physics for their work. Biological macromolecules such as proteins, nucleic acids, lipids, and organic molecules including pharmaceutical compounds, can be studied using this versatile tool that exploits the magnetic properties of certain nuclei.
3.7K
IR Spectrum
1.0K
When infrared (IR) radiation passes through a molecule, the bonds stretch or bend by absorbing the radiation. This absorption creates the molecule's absorption spectrum, which is the plot of its percentage transmittance versus wavenumber.
Transmittance is defined as the ratio of the radiant power passing through a sample to that from the radiation's source. Multiplying the transmittance by 100 gives the percent transmittance (%T), which varies between 100% (no absorption) and 0%...
Transmittance is defined as the ratio of the radiant power passing through a sample to that from the radiation's source. Multiplying the transmittance by 100 gives the percent transmittance (%T), which varies between 100% (no absorption) and 0%...
1.0K

