题解 CF628D：数位DP
很显然是数位DP了。 Read more
Four OOP Implementations in JavaScript
This article compares and contrasts four different implementations of object-oriented programming in JavaScript. Read more
Support Vector Machines
We could use KNN, logistic regression, LDA, and decision trees for classification problems. Here we discuss a new set of methods: the maximal margin classifier, the support vector classifier, and the support vector machine, which are often loosely referred to as “support vector machines”. Read more
Tree-Based Methods
Recall that we use step functions, where the range of predictor $X$ is broken into several bins and in each bin the average of the observed response, certainly a constant, is used as the prediction. Step functions can be viewed as a special case of tree-based methods, the latter of which could be applied to multiple predictors. Read more
Non-Linear Models
Linear models, including linear regression and models making improvements on it, can only offer a limited approximation of the real world. Therefore, moving beyond linearity is necessitated in various situations where more flexibility is required. Read more
编程语言与自然语言之比较
浅谈编程语言和自然语言的可比性。 Read more
MySQL 中的窗口函数
提示：这篇文字适合在你已经掌握了 MySQL 的基础操作后阅读。 Read more