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freeCookie_🍪

有缘再会

就这样吧。 工作实在太难受了。 我实在是受不了了。 我太不走运了。 我总是不走运。 总是赶上招聘寒冬。 在不该接的时候接。 在不该跳的时候跳。 辛辛苦苦读了书转了专业刷了题。 结果还是一无所成。 总是这样。 赶不上好时候。 做不出好选择。 除了自己什么都没有。 我累...

Posted by freeCookie🍪 on November 11, 2019

SVM

SVM Support vector machine SVM are supervised learning models with associated learning algorithms that analyze data used for classification and r...

Posted by freeCookie🍪 on September 25, 2019

Liner Regression & Logistic Regression

LR, GD, SGD

Linear Regression Linear regression is a linear model, e.g. a model that assumes a linear relationship between the input variables (x) and the sin...

Posted by freeCookie🍪 on September 24, 2019

KNN

KNN KNN Classifiers An object is classified by a majority vote of its neighbors, with the object being assigned to the class most common among i...

Posted by freeCookie🍪 on September 24, 2019

Overfitting, Underfitting, Bias, Variance

Overfitting & Underfitting Overfitting in ML Overfitting and Underfitting in ML What is overfitting? Overfiting: Model corresponds too ...

Posted by freeCookie🍪 on September 23, 2019

Tree Traversal

Preorder, Inorder, Postorder

Tree Traversal Preorder Traversal LC144. class Solution { public List<Integer> preorderTraversal(TreeNode root) { Stack<Tre...

Posted by freeCookie🍪 on September 2, 2019

Singleton

Singleton 单例模式 准备面试ing。我觉得这大概就是我为数不多的能够做sde的机会了。加油啊。求人品。求走运。 先复习一下Java的访问权限和关键字。 Singleton Pattern, a class is restricted to have one single in...

Posted by freeCookie🍪 on September 2, 2019

Leetcode Wiggle Sort

Wiggle Sort 280. Wiggle Sort Given an unsorted array nums, reorder it in-place such that nums[0] <= nums[1] >= nums[2] <= nums[3]... 此处...

Posted by freeCookie🍪 on August 29, 2019

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