愿博主一切安好，不忘初心！
读博三个月，我被PUA导师骂哭了！事情是这样的，昨天晚上我给导师发了条微信，表明学院要求每个学生参加寒假社会实践，我计划要去某某单位实践，请老师批准。 然后导师就让我立刻马上去实验室见他。然后我就一脸懵逼地去...
IP属地：河南
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@范二小姐姐 抱歉，现在才回复。。。我似乎找到了人生的解药，“存在先于本质” - 让-保罗·萨特
为什么会生活没激情，活着没意思？
张博士跳楼自杀了！这个消息如一声巨雷在朋友圈炸了！ 所有人都认为，张简是一个非常有上进心的青年才俊！年纪轻轻拿到了某重点高校博士学位，顺利进入一家高薪央企工作，一项项成果奖，...
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Prediction interval vs. Confidence interval vs credible interval
Prediction interval Prediction intervals are always wider than confidence intervals, be...
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Conjugate prior
In general, if the prior distribution belongs to a family , the data have a distributio...
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Chalmers Course: Statistical learning for big data
Course literature: Most of the course content can be found in Hastie T, Tibshirani R, a...
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Baseline vs. benchmark in machine learning
A baseline is usually a lower complexity model. New research leads tend to compare agai...
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Probability distribution function vs. Probability density function
Combining what wikipedia and my own interpretation, probability distribution function c...
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数据标准化(Normalization)四种方法
min-max法（规范化方法）这种归一化方法比较适用在数值比较集中的情况。但是，如果max和min不稳定，很容易使得归一化结果不稳定，使得后续使用效果也不稳定，实际使用中可以...
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Chalmers Course: Linear and integer optimization with applicationsCourse literature: Optimization (English) (Links to an external site.)[https://www.stud...
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Machine Learning - Stanford UniversityCourse syllabus Week 1: Introduction Model and Cost Function Gradient Descent Linear re...
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Frequentist vs. Bayesian (Maximum Likelihood Estimation vs. Maximum A Posteriori )
- Quantity of interest or parameter of a model Frequentist: is described as unknown an...
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多元函数的泰勒展开式
之前一直只是用一元函数的泰勒展开，后来发现原来泰勒展开还有多元。列一列以供以后参考： 一元函数在点处的泰勒展开式为： 二元函数在点处的泰勒展开式为: 多元函数在点处的泰勒展开...
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Scatter plot with categories in column
Source: https://stackoverflow.com/questions/21654635/scatter-plots-in-pandas-pyplot-how...
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Understanding and visualizing data with Python
Course syllabus Week 1 - Introduction to dataWeek 2 - Univariate dataWeek 3 - Multivari...
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再看《我不是药神》想给差评，关于生死，我有一点不同的看法
今天又和朋友讨论起了《我不是药神》这部电影，我说我不喜欢。 朋友很吃惊，豆瓣9.0，里程碑式的国产电影，应该人人都喜欢才对。 但人就是这么奇怪，每个人都有他的思想，有他的动机...
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SQL for Data ScienceCourse syllabus Week 1 - Getting started and Selecting & Retrieving Data with SQLWeek 2...
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Positive Psychology
Lesson 1: Ten positive emotions (frequency of people daily experience): Joy (playful) G...
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Applied Machine Learning in Python
Module 1: Fundamentals of Machine Learning Machine learning brings together statistics,...