目标检测基础知识
Bounding Box 损失函数IOU概述IoU(Intersection over Union)，即交并比，是目标检测中常见的评价标准，主要是衡量模型生成的bounding box和ground truth box之间的重叠程度，计算公式为：
$$ IoU=\frac{DetectionResult \bigcap GroundTruth}{DectionResult \bigcup GroundTruth} \tag{1} $$
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图片来源：https://zhuanlan.zhihu.com/p/60794316
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CS221_2019_autumn assigment1
课程网址：https://github.com/stanford-cs221/autumn2019
注：本作业解答是2019年秋季学期的
Foundations解答Probelm 1: Optimization and probabilitya题题目Let x1,…,xn be real numbers representing positions on a number line. Let w1,…,wn be positive real numbers representing the importance of each of these positions. Consider the quadratic function: f(θ)=12∑ni=1wi(θ−xi)2. What value of θ minimizes f(θ)? What problematic issues could arise if some of the wi’s are negative?
Note: You can think about this problem as trying to fin ...
快速迁移博客到机器
下载Node.js1https://nodejs.org/en/
安装Hexo1npm install hexo-cli -g
部署Git1npm install hexo-deployer-git --save
生成访问密钥1ssh-keygen -t rsa -C "GitHubname@163.com"
在Github上申请SSH在Gitbash上添加SSH1eval "$(ssh-agent -s)"
添加密钥到ssh-agent1ssh-add ~/.ssh/id_rsa
测试1ssh -T git@github.com
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安装butterfly插件1npm install hexo-renderer-pug hexo-renderer-stylus --save
对username.github.io仓库新建分支，并克隆1git branch [name]
切换分支
1git checkout [branch name]
推送分支
1git push origin [branch name]
删除分支
1git branch -d [branch n ...
