前天在广州找朋友时发现附近有一家永辉超市，它是去年年末自主改调的“胖东来”超市，我一下子来了兴致，之前虽然也去过河南很多城市，但是没有去过许昌和新乡(New York)，而胖东来又不在河南之外开店，所以一直缺少体验的机会。在胖东来仔细转了一遍后，我对胖东来的服务有了更进一步的理解和感受。
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This is a quick-start essay for LangChain and RAG which mainly refers to the Langchain chat with your data course which are taught by Harrison Chase and Andrew Ng.
Read the full text -> A total of 3.38k wordsThis article is a summary of the random walks in the book “Random Processes” by Gregory F. Lawler.
Read the full text -> A total of 1.19k wordsThis is the notes for the lecture of Parameter Estimation.
Read the full text -> A total of 1.19k wordsThis article is about the two random variables and their properties.
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The /proc in Linux is a kind of Pseudo file system (also known as Virtual File System), what it saves is a series of special files that store the current running state of the kernel, and the user can check the hardware info and the runnning processes via the files, even adjust some files to change the state of running kernel. The files in /proc will be refresh in RAM, so the files’ size is 0 bytes.
I frequently use ifconfig and cat /proc/net/dev to examine network information. However, today, my cloud server crashed unexpectedly. I reached out to the cloud support for assistance. The engineer utilized iftop to analyze the situation. After the issue was resolved, I started to consider using this tool. Now, let’s take a closer look at this powerful utility.
Some good commands to share.
Note: This post will be updated regularly.
Read the full text -> A total of 0.08k wordsThis article introduces the common distribution functions both continuous and discrete. Besides, the basic knowledge of conditional distribution such as total probability and Bayes’ Theorem is also introduced. The most important part are the Normal Approximation and Poisson Approximation of the Binomial Random Variable.
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