Option A, host bind mount best for direct host access and backups Example(Linxu): Option B, Docker named volume best for Docker lifecycle management Example: Where data is stored […]
Transform2D
每个Object都有自己的坐标系统，把这个物体放在世界坐标系统后，对Object执行变换操作，本质上是在变换它的坐标系，而不是改变物体上的点线面的位置。 Transform2D的结构是这样的： $$\begin{bmatrix} basis.x.x & basis.y.x & origin.x \\ basis.x.y & basis.y.y & origin.y \end{bmatrix}$$ 如果我执行旋转操作的时候，本身是给某个点执行左乘旋转矩阵，旋转矩阵的长这样： $$R(θ) =\begin{bmatrix}\cosθ & -\sinθ \\\sinθ & \cosθ\end{bmatrix}$$ 入股哦我们有一个2D的点或者一个Vector: $$ v = \begin{bmatrix} […]
Django部署静态文件问题
登陆一个Django服务器的admin页面的时候出现如下错误： 主要原因是没有把admin的静态文件写入到domain/static对应的文件里 在setting.py中配置: 这里设置的STATIC_ROOT是服务器本地目录，生成的静态文件会放在这里面。执行如下命令： 执行完了，会生成一些静态文件，大概像这样： 配置Nginx： 重启一下nginx就可以了
Adding Swap Space on Ubuntu 24.04
source page: https://www.digitalocean.com/community/tutorials/how-to-add-swap-space-on-ubuntu-22-04 We can see if the system has any configured swap by typing: If you don’t get back any output, this means your system does not […]
Step by Step实现RAG
RAG(Retrieval and generation)技术可以扩展大模型的知识库，用来回答我们特定问题，这里我们Step by Step 实现RAG技术。
timeScale vs fixedDeltaTime
‘Time.timeScale‘ is a property in Unity that affects the scale at which time passes in the game. This property can be used to create effects such as slow […]
Difference between Gradient and Derivative
The concepts of ‘gradient’ and ‘derivate’ are fundamental in mathematics, particularly in calculus. Both relate to how functions change, but they apply in different contexts and have distinct […]
Fixed update with Physics.Simulate in Unity
When we set ‘Physics.simulationMode’ to ‘Script’, we can manually control the fixed update using ‘Physics.Simulate’. Here, we observe the differences when ‘Physics.simulationMode’ is placed at the top or […]
OpenMP and MPI
OpenMP(Open Multi-Processing) is an application programming interface (library) that supports multi-platform shared-memory parallel programming in C, C++ and Fortran on all architectures, including Unix and Windows platform. It […]
mean rewrad in SubprocVecEnv
In Stable Baseline3, when using environments like ‘SubprocVecEnv’ for parallel environment management, the mean reward isn’t displayed by default during the training phase. This is because ‘SubprocVecEnv’ runs […]