Posts

Evaluate Binary Classification with Keras
Keras provides very convenient tools for fast protyping Machine Learning models, especially neural networks. You can pass metric functions when compiling a model, to evaluate the learnt models. However in the current version (after v2.
Junyuan Hong
Nov 15, 2018 3 min read machine-learning
Python Decorator

When refactoring a codes, we need to extract duplicated features from different methods or functions. A magic in Python 3 is to decorate the a striped basic functions with sharing features.
Junyuan Hong
Nov 15, 2018 1 min read tech
Linux Rookie Book

As a MS student, I am going to leave my lab at USTC. With this post, I’d like to share my experiences on the Linux system, especially for those who are new to such a system.
Jun 11, 2018 4 min read How-to
NSTableView automatically adjust height to fit cell view
Reference: Using auto-layout to calculate table cell height In ‘Using auto-layout to calculate table cell height’, it’s introduced how to use auto-layout to update table view’s (UITableView) cell height with Objective-C language.
Aug 4, 2015 2 min read tech
Make text table view(NSTableView) auto resize
To make a iMessage-like chat table view, there is several steps to follow: Text field should be able to adjust its size automatically. Image view of bubble should adjust automatically relative to text field.
Aug 4, 2015 1 min read tech
Add 3rd part dynamic library (.dylib) to Xcode target
Dynamic library (with .dylib suffix at UNIX-like OS) is a kind of library discriminated from static library (with .a suffix). Static library will be linked at linking stage instantly after codes are compiled, before binary product output.
Jul 29, 2015 6 min read tech
The method resetTransform of SCNPhysicsBody
According to the SceneKit document, the function of resetTransform is: Updates the position and orientation of a body in the physics simulation to match that of the node to which the body is attached.
Feb 4, 2015 1 min read tech
Start my blog with Jekyll and disqus
NOTE: this article is first posted in my old website, which has be deprecated. Jekyll is a powerful static website framework, which indead works for GitHub Pages. At the time I found it, I decided to apply it for my github.
Feb 3, 2015 1 min read website