Hi, I'm Yifei, a software engineer. My recent interests covers NLP and Information Retrieval, but I also write front end and iOS code because of work.

I'm trying to build a toy search engine, so-called a 2005 version of Google, to validate and explore some of my thoughts, most of my notes will be on that from now(2022) on.

This is the place where I share my notes with people, currently comments is not supported. If you got any question, you can contact me via the following:

• Email: kong(at)yifei.me
• GitHub: @yifeikong
• WeChat: oneflyapp

If you would like to get timely updates, you can subscribe the RSS or follow my WeChat public account: spider-learn

All contents are under the CC-BY-NC-SA license, if not otherwise specified.