Artificial Intelligence #2: Polynomial & Logistic Regression

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课程名称:人工智能 #2:多项式与逻辑回归 课程概述:本课程主要讲解统计学中的逻辑回归和多项式回归。逻辑回归是一种回归模型,其因变量为分类变量,特别是二元因变量,只能取“0”和“1”两个值。该模型用于估计根据一个或多个自变量的输入,二元响应的概率。逻辑回归可以用于各种二元结果的分析,如及格/不及格、胜/负等。此外,多项式回归是一种回归分析方法,模型表现为自变量与因变量之间的非线性关系。它已被广泛用于描述非线性现象,如组织生长速率、湖泊沉积物中碳同位素的分布及疾病流行的进展。 在本课程中,学员将学习如何通过多项式回归估计非线性系统的输出,并进一步使用逻辑回归对模型输出进行分类。课程第一部分将使用Python来估计系统输出,包括非线性正弦函数、Python数据集以及温度和二氧化碳。第二部分则专注于通过Python分类具有非线性结构的系统输出,案例包括:分类簇、分类鸢尾花及分类手写数字。 重要信息:若您认为课程对您的职业发展没有帮助,可以享受30天无理由退款保证。一旦注册,您将获得课程的无限终身访问权,并立即获得任何更新的免费访问权限。课程提供全力支持,欢迎提出任何问题或建议。 立即采取行动,现在就点击“报名参加此课程”按钮!不要浪费时间!每一秒钟都很宝贵!期待在课程中见到您! 最诚挚的问候, Sobhan

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In statistics, Logistic Regression, or logit regression, or logit model is a regression model where the dependent variable (DV) is categorical. This article covers the case of a binary dependent variable-that is, where the output can take only two values, "0" and "1", which represent outcomes such as pass/fail, win/lose, alive/dead or healthy/sick. Cases where the dependent variable has more than two outcome categories may be analysed in multinomial logistic regression, or, if the multiple categories are ordered, in ordinal logistic regression. In the terminology of economics, logistic regression is an example of a qualitative response/discrete choice model.Logistic Regression was developed by statistician David Cox in 1958. The binary logistic model is used to estimate the probability of a binary response based on one or more predictor (or independent) variables (features). It allows one to say that the presence of a risk factor increases the odds of a given outcome by a specific factor.Polynomial Regression is a form of regression analysis in which the relationship between the independent variable x and the dependent variable y is modelled as an nth degree polynomial in X. Polynomial regression fits a nonlinear relationship between the value of X and the corresponding conditional mean of Y. denoted E(y x), and has been used to describe nonlinear phenomena such as the growth rate of tissues, the distribution of carbon isotopes in lake sediments, and the progression of disease epidemics. Although polynomial regression fits a nonlinear model to the data, as a statistical estimation problem it is linear, in the sense that the regression function E(y x) is linear in the unknown parameters that are estimated from the data. For this reason, Polynomial Regression is considered to be a special case of multiple linear regression.The predictors resulting from the polynomial expansion of the "baseline" predictors are known as interaction features. Such predictors/features are also used in classification settings.In this Course you learn Polynomial Regression & Logistic Regression You learn how to estimate output of nonlinear system by Polynomial Regressions to find the possible future output Next you go further You will learn how to classify output of model by using Logistic RegressionIn the first section you learn how to use python to estimate output of your system. In this section you can estimate output of:Nonlinear Sine FunctionPython DatasetTemperature and CO2In the Second section you learn how to use python to classify output of your system with nonlinear structure.In this section you can estimate output of:Classify BlobsClassify IRIS FlowersClassify Handwritten Digits___________________________________________________________________________Important information before you enroll:In case you find the course useless for your career, don't forget you are covered by a 30 day money back guarantee, full refund, no questions asked!Once enrolled, you have unlimited, lifetime access to the course!You will have instant and free access to any updates I'll add to the course.You will give you my full support regarding any issues or suggestions related to the course.Check out the curriculum and FREE PREVIEW lectures for a quick insight.___________________________________________________________________________It's time to take Action!Click the "Take This Course" button at the top right now!...Don't waste time! Every second of every day is valuable...I can't wait to see you in the course!Best Regrads,Sobhan

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