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Survival Tree01:19

Survival Tree

39
Survival trees are a non-parametric method used in survival analysis to model the relationship between a set of covariates and the time until an event of interest occurs, often referred to as the "time-to-event" or "survival time." This method is particularly useful when dealing with censored data, where the event has not occurred for some individuals by the end of the study period, or when the exact time of the event is unknown.
 Building a Survival Tree
Constructing a...
39
Prediction Intervals01:03

Prediction Intervals

2.2K
The interval estimate of any variable is known as the prediction interval. It helps decide if a point estimate is dependable.
However, the point estimate is most likely not the exact value of the population parameter, but close to it. After calculating point estimates, we construct interval estimates, called confidence intervals or prediction intervals. This prediction interval comprises a range of values unlike the point estimate and is a better predictor of the observed sample value, y. 
2.2K
Regression Analysis01:11

Regression Analysis

5.5K
Regression analysis is a statistical tool that describes a mathematical relationship between a dependent variable and one or more independent variables.
In regression analysis, a regression equation is determined based on the line of best fit– a line that best fits the data points plotted in a graph. This line is also called the regression line. The algebraic equation for the regression line is called the regression equation. It is represented as:
5.5K
End Point Prediction: Gran Plot01:07

End Point Prediction: Gran Plot

171
A Gran plot is used to predict the equivalence volume or endpoint of a potentiometric or acid-base titration without reaching the endpoint. Typically, titration data is collected as a function of the titrant's volume up to a point less than the equivalence volume and then transformed into a linear format. The straight line is extended to the x-axis, indicating the necessary titrant volume to achieve the equivalence point.
For potentiometric titration, the Gran plot is created by plotting...
171
Multiple Regression01:25

Multiple Regression

2.9K
Multiple regression assesses a linear relationship between one response or dependent variable and two or more independent variables. It has many practical applications.
Farmers can use multiple regression to determine the crop yield based on more than one factor, such as water availability, fertilizer, soil properties, etc. Here, the crop yield is the response or dependent variable as it depends on the other independent variables. The analysis requires the construction of a scatter plot...
2.9K
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving01:29

Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving

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Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
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Assessing regional competitiveness in Peru: An approach using nonlinear machine learning models.

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相关实验视频

Updated: May 10, 2025

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment
12:18

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment

Published on: January 11, 2020

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微型金融机构在新兴国家的失败预测,机器学习方法.

Yvan J Garcia-Lopez1,2, Patricia Henostroza Marquez1,2, Nicolas Nuñez Morales1,2

  • 1CENTRUM Católica Graduate Business School (CCGBS), Lima, Peru.

PloS one
|April 24, 2025
PubMed
概括

一个新的调整总粒度模型 (ARGM) 可以高准确度地预测小额贷款机构的失败. 这种机器学习工具有助于新兴市场的金融监管机构,防止经济不稳定,保护客户.

科学领域:

  • 金融风险管理 金融风险管理
  • 计算金融是指计算金融.
  • 经济包容 经济包容

背景情况:

  • 微型金融机构 (MFI) 对经济包容性至关重要,但它们的失败带来了重大风险.
  • 由于金融数据不平衡和复杂,预测MFI失败具有挑战性.
  • 现有的模型在现实监管环境中往往缺乏实际适用性.

研究的目的:

  • 开发一个实用且准确的模型来预测小额贷款机构的失败.
  • 通过早期风险检测,加强新兴市场的金融稳定.
  • 为监管机构提供一个可靠的工具来主动干预.

主要方法:

  • 利用颗粒式计算和机器学习技术.
  • 开发了调整的粗颗粒模型 (ARGM).
  • 分析了56家秘鲁金融机构 (2014-2023) 的数据.

主要成果:

  • 在预测故障方面,ARGM实现了近90%的准确性.
  • 该模型在确定稳定的机构方面显示出超过95%的准确性.
  • 六家机构 (20%) 被标记为高风险,证明了实际应用.

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Last Updated: May 10, 2025

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A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment

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结论:

  • 该ARGM是预测MFI失败的高度准确和实用的工具.
  • 这种模式可以显著帮助新兴市场的金融监管机构预防危机.
  • 基于ARGM预测的积极干预可以保障经济包容性和社区储蓄.