Kelly criterion and the danger of expectation

Came across Kelly criterion with 李永樂老師’s video. The proof is indeed rather elementary. However, it also puzzled me when I tried to derive it myself. It seems that the argument is completely okay. Hopefully, someone can correct me. Update: This is a good lesson learned. Yes. Have to be really careful in terms of expectation….

Digging hole

Another lesson of not to do anything when I am tired. I was thinking to try to sync my dpt-rp1 digital paper with a newly installed windows 10. I didn’t pay attention and accidentally upgrade the firmware. Of course, it is a horrible mistake since I rooted that earlier. It looks like I have bricked…

peap ubuntu bug

I have been using the school guest wifi for a while. But today, it doesn’t work and tries to connect the eduroam wifi. Then just realize there is a nasty bug in ubuntu for that. It seems to be affecting multiple distribution. Trying to downgrade wpa_supplicant following this. Cannot downgrade libssl to 4.14 but to…

Latex tools

Came across two online Latex tools are very convenient. This one converts handwritten math to Latex and this one converts Latex to gif.

Some note of time traveller KFK

Just for fun. But some of what he wrote was quite interesting Why God created human? 器皿與內容。構成並顯出。 What is the nature of management? The desire of power? 對人性之惡的限制與監督。 What is the organization LAWS? LAWS是自主致命性武器英文縮寫。準確說,LAWS本身不是組織,是LAWS的國際預防組織。 What is the meaning of Rehma? 即時,帶著光之話語訊息的傳遞。

Annotated transformer

This Harvard blog post is really nice. It filled in the detail implementation for the “Attention is all you need” paper.

Experience with Windows subsystem for Linux

Tried to play opencv on my old surface pro 3. Somehow face_recognition is running very slow on Anaconda python. I suspected that dlib was not optimized somehow. Try out Windows subsystem for Linux and see how it goes. It is actually quite decent. Many has problem install opencv (with library link problem). It can be…

Pseudo-random pattern

Thinking to get a pseudo-random patern projector for 3d reconstruction. Come across this nice discussion. Probably the best solution is a laser source with a holograhic diffuser.