在SMC下,一个一般类型的ARG的概率
bioRxiv : the preprint server for biology
|March 10, 2025
概括
祖先重组图 (ARG) 的推断正在推进. 序列马尔科夫聚合 (SMC) 模型的新向后时间配方允许在没有精确的重组细节的情况下进行概率计算,改进了ARG分析.
科学领域:
- 人口遗传学 人口遗传学
- 计算生物学 计算生物学
- 生物信息学是一种生物信息学.
背景情况:
- 祖先重组图 (ARG) 对于理解遗传变异至关重要.
- 最近的进展使ARG推断能够用于大型数据集,但启发式方法缺乏用于概率计算的拓性质.
- 现有的方法难以实现像顺序马尔科夫聚合 (SMC) 等模型所需的精确重组事件细节.
研究的目的:
- 介绍SMC模型的新的时间倒流配方.
- 根据这个新表述,根据这个新表述,为ARG引出一个简单的概率定义.
- 为了使ARG推断能够强大到不精确的重组细节和多体.
主要方法:
- 开发了顺序马尔科夫凝聚 (SMC) 模型的时间倒流配方.
- 导出了一个概率定义,用于一个一般类型的ARG.
- 已证明对多体瘤的稳定性和缺乏精确的重组事件估计.
主要成果:
- 新的SMC配方允许对ARG进行概率计算,而不需要精确的重组事件细节.
- 这种推导的概率是强大的,在ARG中存在多种类的存在.
- 这种方法为ARG推理开辟了新的可能性,特别是对于大样本大小.
结论:
- 倒退时间的SMC公式简化了ARG概率计算.
- 这种方法提高了基于ARG的种群遗传学研究的可行性.
- 它解决了当前启发式ARG推断方法的局限性.
相关概念视频
Testing a Claim about Population Proportion
3.3K
A complete procedure for testing a claim about a population proportion is provided here.
There are two methods of testing a claim about a population proportion: (1) Using the sample proportion from the data where a binomial distribution is approximated to the normal distribution and (2) Using the binomial probabilities calculated from the data.
The first method uses normal distribution as an approximation to the binomial distribution. The requirements are as follows: sample size is large...
There are two methods of testing a claim about a population proportion: (1) Using the sample proportion from the data where a binomial distribution is approximated to the normal distribution and (2) Using the binomial probabilities calculated from the data.
The first method uses normal distribution as an approximation to the binomial distribution. The requirements are as follows: sample size is large...
3.3K
Probability Laws
39.5K
Overview
39.5K
Probability in Statistics
12.3K
Probability is the likelihood of an event occurring. The term event is defined as a collection of results of a procedure. An event is a simple event when an outcome cannot be divided into simpler parts.
An example of a simple event is a coin toss. The result of a coin toss is either a head or a tail. Here, head and tail are two simple events. These two simple events make up the sample space. Further, the probability of an event occurring falls within the range of 0 to 1. The probability of an...
An example of a simple event is a coin toss. The result of a coin toss is either a head or a tail. Here, head and tail are two simple events. These two simple events make up the sample space. Further, the probability of an event occurring falls within the range of 0 to 1. The probability of an...
12.3K
Hypothesis: Accept or Fail to Reject?
27.5K
The outcome of any hypothesis testing leads to rejecting or not rejecting the null hypothesis. This decision is taken based on the analysis of the data, an appropriate test statistic, an appropriate confidence level, the critical values, and P-values. However, when the evidence suggests that the null hypothesis cannot be rejected, is it right to say, 'Accept' the null hypothesis?
There are two ways to indicate that the null hypothesis is not rejected. 'Accept' the null...
There are two ways to indicate that the null hypothesis is not rejected. 'Accept' the null...
27.5K
Probability Distributions
6.7K
The probability of a random variable x is the likelihood of its occurrence. A probability distribution represents the probabilities of a random variable using a formula, graph, or table. There are two types of probability distribution– discrete probability distribution and continuous probability distribution.
A discrete probability distribution is a probability distribution of discrete random variables. It can be categorized into binomial probability distribution and Poisson...
A discrete probability distribution is a probability distribution of discrete random variables. It can be categorized into binomial probability distribution and Poisson...
6.7K
Decision Making: P-value Method
5.2K
The process of hypothesis testing based on the P-value method includes calculating the P- value using the sample data and interpreting it.
First, a specific claim about the population parameter is proposed. The claim is based on the research question and is stated in a simple form. Further, an opposing statement to the claim is also stated. These statements can act as null and alternative hypotheses: a null hypothesis would be a neutral statement while the alternative hypothesis can...
First, a specific claim about the population parameter is proposed. The claim is based on the research question and is stated in a simple form. Further, an opposing statement to the claim is also stated. These statements can act as null and alternative hypotheses: a null hypothesis would be a neutral statement while the alternative hypothesis can...
5.2K


