Yaonotes Blog

我干了什么 究竟拿了时间换了什么

Why Machine Learning Systems are Important

In the past several months, I have seen several talks, papers and discussions about the machine learning systems. The term “Machine Learning Systems” is too big to be discussed in a short blog post...

后验概率

你需要为阳性检测结果担心吗?

假设在人群中有一种疾病,每1000人会有一人不幸患上这种疾病。在医院中有相应的检测技术,若患者$A$有这种疾病,那么有$95\%$的可能这种技术会返回阳性结果,$5\%$的可能返回阴性结果。对应地,若被检测的人没有这种疾病,该检测技术仍有$5\%$的可能返回阳性结果,但$95\%$的情况下都是阴性结果。 现在某疑似患者在医院检测出了阳性结果,那么他真实患有这种疾病的概率是多少呢?直觉上来说...

Implement a Deep Learning Framework in Pure Python

I: Preliminaries.

预备知识 本节将包括对卷积神经网络、梯度下降法、反向传播的初步介绍。同时我们也将会详细的推导我们本节最重要的结论:矩阵线性变换的导数。由于本文最初是英文写成,可能会有一些翻译腔,请谅解。 卷积神经网络 卷积神经网络是被广泛使用的一类神经网络。在一个卷积神经网络中,通常存在卷积层(Convolution Layer),池化层(Pooling Layer)和全连接层(Fully Connec...

可解释性的机器学习笔记 (I)

动机,分类和范围

可解释性是人们能够理解决策原因的程度。也是指人们能够一致地预测模型结果的程度。 以下原因推动了对可解释性(Interpretability) 和解释 (Explanations) 的需求 (Doshi-Velez 和 Kim (2017),Miller (2017)): 人类的好奇心和学习能力,这是指人类有着对周围环境的心理模型 (Mental Model),当有意外的事情发生时,人...

Transfer Learning

Generally, transfer learning is a process where a model trained on one problem is used in some way on a second related problem. In deep learning, it refers to the technique whereby a deep learning ...

心态的几重变化

自本科课程结束,参加实习以来,我有幸参与了一些有趣的项目,有偏算法类的也有偏工程类的。时至今日,心态有了几重变化。曾经王国维提出了读书的三重境界,我感觉到我也可以略略记录一下我的心态/境界的变化。 等待一朝头角就,撼摇霹雳震山河:此时,刚刚接触到一些入门的技巧,凭借着一些初级的工程能力,发现无论什么方向,都可以理解/实现,便以为迟早可以做出不错的成果。此时的心态与其说是自信,不如说是...

Setup Latex in Docker with VSCode

In this article, I will introduce how I set up my environment for writing $\LaTeX$ in VSCode. Usually I do not share how to configure the environment, but I love the settings and really want to sha...

Convolutional Neural Networks

Overview Convolutional neural network (CNN or ConvNet) is a class of deep neural networks, which plays an important role in image classification. Though there are several different types of CNNs, ...

Academic Writing Skills


Ethical AI Application

In recent days, I read several posts about ethical artificial intelligence, and most importantly, a list of scary AI usage by David Dao. Since then, I was thinking what should be defined as an awfu...