The first step in solving any problem is recognizing there is one.解决问题的第一步是要承认确实存在问题.…

solving the problem of overfitting:regularization 发生的在linear regression上面的overfitting问题 发生在logistic regression上面的overfitting 怎么解决overfitting regularization: cost function of linear regression parameters小的话,这样hypothesis就会变得简单,这样就不会overfitting 一般不会对θ0进…

The Problem of Overfitting Cost Function Regularized Linear Regression Note: [8:43 - It is said that X is non-invertible if m ≤ n. The correct statement should be that X is non-invertible if m < n, and may be non-invertible if m = n. We can apply reg…

https://en.wikipedia.org/wiki/An_Essay_towards_solving_a_Problem_in_the_Doctrine_of_Chances…

0x01 从判定问题到形式语言 这篇讲知识证明的wiki([1]): https://en.wikipedia.org/wiki/Proof_of_knowledge 里面有一句话: Let x be a language element of language L in NP 这篇讲NPC的文章([2]) http://www.cs.princeton.edu/courses/archive/spr11/cos423/Lectures/NP-completeness.pdf 里面提到Decis…

是任意形式的递归,是化解的一般式. 主题所谓的“递归调用化解为栈处理”,意思是,将递归函数调用化解为“一个由stack_push stack_pop stack_top等函数调用组成的循环式子”.这里的 stack_push, stack_pop, stack_top是指,程序员自己实现的一个ADT(Abstract Data Type)中的函数操作接口,这个ADT叫做栈.要知道,在C语言中,函数调用链本身就是栈处理的,处理C语言中函数调用链的是进程栈/线程栈,进程栈/线程栈是一个C语言程序运行…

Installing Wine on Mac This tutorial is for intermediate users who want to install and use Wine on their computer running macOS. You should already know the basics of how to use the command line. If you don't, read this tutorial first. What is Wine?…

Problem A permutation of size N is a sequence of N numbers, each between 0 and N-1, where each number appears exactly once. They may appear in any order. There are many (N factorial, to be precise, but it doesn't matter in this problem) permutations…

本题的 Large dataset 本人尚未解决. https://code.google.com/codejam/contest/90101/dashboard#s=p2 Problem So you've registered. We sent you a welcoming email, to welcome you to code jam. But it's possible that you still don't feel welcomed to code jam. That's w…

A new thread pool plugin is now a part of the MySQL Enterprise Edition.In this blog we will cover the problem that the thread pool is solvingand some high-level description of how it solves this problem. In the traditional MySQL server model there is…