I’ve been using LEDE OpenWRT firmware as my router’s firmware. Due to version updates, some software is missing in older versions, so I decided to compile a custom firmware containing only the needed software for my Phicomm K2 router.

Since the original logo has a white background, and we need to change the white background to transparent, here we use the versatile Python tool for image conversion, specifically the pillow package’s Image.

Gradient descent is a first-order optimization algorithm, commonly called the steepest descent method. To find a local minimum of a function using gradient descent, one must iteratively move from the current point in the opposite direction of the gradient (or approximate gradient) by a specified step size.

Too many idle servers collecting dust. Here is an option to make use of idle VPS. Today I will teach you how to use CPUMiner-Multi on CentOS for mining and earn some cryptocurrency. Monero is currently the most profitable cryptocurrency, so we choose Monero.

After improving a Hugo theme used by this blog, an error occurred when pushing to the git repository.

A tree in real life has many branches and leaves. In fact, the concept of trees is widely used in machine learning, covering classification and regression. In decision analysis, decision trees are used to visually represent and make decisions. As the name implies, a decision tree is a tree-shaped decision model.

This article introduces a very important dimensionality reduction method in machine learning—Principal Component Analysis.

It is always known that bit and byte are two concepts, one is binary digit, and the other is a byte unit consisting of 8 bits. However, in practical situations, people still confuse bit and byte in various network speed abbreviations. This article summarizes the knowledge I found.

90% of drivers believe their driving skills are above average, 90% think their IQ is above the average IQ of the population, and the key is this can actually be consistent with real data — it's true and not fabricated.

s-tui is a free and open-source command-line UI tool for monitoring computer CPU. It can monitor CPU temperature, frequency, etc. in real-time and display it graphically. This is a Python tool that can be installed via pip, but requires root permissions. It can be used via SSH login to monitor CPU status graphically.

Getting back on track, today's tutorial by Chunjiang Muker shows how to automatically stream Douyu live on CentOS 7 to achieve 24/7 uninterrupted streaming.

A few days ago on WeChat, I discovered that Tongji University actually has its own open source software mirror site. Our lab servers are still using Alibaba Cloud's CentOS 7 mirror. Wouldn't it be much faster if we switched to the university's mirror? So how to change CentOS 7 public repo to Tongji University's mirror?