Hi all, Following this preprint and the polemic comment by its author, I wonder if Logistic Regression should be in scanpy environment. I tried the sklearn.linear_model.LogisticRegressionCV classifier from scikit-learn. It is pretty fast...
logistic regression,在英语的术语里准确而简洁,但是翻译成中文则有多种译法,例如:逻辑回归(比较常见),对数几率回归(周志华),逻辑斯谛回归(Understanding Machine Learning:From Theory to Algorithms中译本)等等,个人比较喜欢周老师的翻译,从名称中可以看到背后的意义。(后文都采用此译法) 对数几率回归是一种常用于分类...
原文地址:https://github.com/towerjoo/myML/issues/2 署名 保持完整性 CC 什么是对数几率回归(logistic regression) logistic regression,在英语的术语里准确而简洁,但是翻译成中文则有多种译法,例如:逻辑回归(比较常见),对数几率回归(周志华),逻辑斯谛回归(Understanding Machine Learning:From Theory to Algorithms...
https://github.com/Ceruleanacg/Descentgithub.com/Ceruleanacg/Descent 问题设定 考虑一个二分类问题,对于数据集 X,Y, X 是一个维度为 (−1,2) 的数组, Y 是标签,其值为 0,1 ,我们首先生成数据集并绘制出他们的图像: %matplotlib inline import matplotlib.pyplot as plt import numpy as np data...
github : https://github.com/twomeng/logistic-regression- ex1. m 1%% Machine Learning Online Class - Exercise2: Logistic Regression2%3%Instructions4% ---5%6% This file contains code that helps yougetstarted on the logistic7%regression exercise. You will need to complete the following functions...
代码及数据:https://github.com/zle1992/MachineLearningInAction logistic regression 优点:计算代价不高,易于理解实现,线性模型的一种。 缺点:容易欠拟合,分类精度不高。但是可以用于预测概率。 适用数据范围:数值型和标称型。 准备数据: 1defloadDataSet():2dataMat,labelMat =[],[]3with open(filename,"r")...
Logistic regression, despite its name, is a linear model for classification rather than regression. Logistic regression is also known in the literature as logit regression, maximum-entropy classification (MaxEnt) or the log-linear classifier. In this model, the probabilities describing the possible out...
回顾Logistic Regression的基本原理 关于sigmoid函数 极大似然与损失函数 牛顿法 实验步骤与过程 首先,读入数据并绘制原始数据散点图 根据图像,我们可以看出,左下大多为负样本,而右上多为正样本,划分应该大致为一个斜率为负的直线。 定义预测方程: 此处使用sigmoid函数,定义为匿名函数(因为在MATLAB中内联函数即将被淘...
LogisticRegression算法案例 python实现(iris数据) 案例代码已上传:Github地址 from math import exp import numpy as np import pandas as pd import matplotlib.pyplot as plt %matplotlib inline from sklearn.datasets import load_iris
https://github.com/yh1008/MEMM:由 Emily Hua 发布的名词短语拆分任务的实现。https://github.com/recski/HunTag:由 GáborRecski 发布的序列句子标记的实现，并有详细文档。 参考文献 Chapter 7:「Logistic Regression」in Speech and Language Processing. Daniel Jurafsky & James H. Martin. Draft of August...