Stock Prices

March 20, 2025 · 1 min read · Page View:

This is a tutorial for stock prices in the context of random processes.

Possion Processes

March 19, 2025 · 18 min read · Page View:

This article is mainly about the Poisson processes in the book “Random Processes” by Gregory F. Lawler.

Docker With GPU

March 18, 2025 · 2 min read · Page View:

This post is to introduce how to use gpu in docker, which also covers the basic usage of gpu on the host machine.

Stochastic Processes

March 15, 2025 · 20 min read · Page View:

Compared to deterministic model, which is specified by a set of equations that describe exactly how the system will evolve over time. In a stochastic model, the evolution is at least partially random and if the process is run several times, it will not give identical results.

Some Useful Tools

March 13, 2025 · 0 min read · Page View:

Some useful tools for developers.

Note: This post will be updated regularly.

A Shopping Experience in Pang Donglai Supermarket

March 7, 2025 · 16 min read · Page View:

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。

Langchain and RAG Best Practices

March 5, 2025 · 16 min read · Page View:

This is a quick-start essay for LangChain and RAG which mainly refers to the Langchain chat with your data^[1] course which are taught by Harrison Chase and Andrew Ng.

Random Walks

February 18, 2025 · 5 min read · Page View:

This article is a summary of the random walks in the book “Random Processes” by Gregory F. Lawler.

Sequences of Random Variables

February 2, 2025 · 2 min read · Page View:

Parameter Estimation

February 2, 2025 · 5 min read · Page View:

This is the notes for the lecture of Parameter Estimation.