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Challenging the Regular Expression with Python
Abstract: I feel the regular expression is a monster, in both ways. Hard to learn, hard to use. Because the dude who concept this is in the 1950s and at this time everything is very C-style (raw and not beautiful). However, for some reason, I have t…
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How To Implement A Neural Network In Octave And What Is Back-propagation?
Abstract: This post is targeting those people who have a basic idea of what neural network is but stuck in implement the program due to not being crystal clear about what is happening under the hood. If you are fresh new to Machine Learning, I sugges…
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My Machine Learning Summary Part.1 How to NOT get confused by the "Cost Functions"
Abstract: I have been studying Andrew Ng's (吴恩达) Machine Learning introduction class on Coursera. Needless to say, it is one of the best online Free course you can find on the Internet. So I want to share my learning curves with you by restating some…
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How to change the Username and Hostname on Ubuntu
Change the username At the start screen press Ctrl+Alt+F1. Log in using your username and password. Set a password for the "root" account. sudo passwd root Log out. exit Log in using the "root" account and the password you have previously set.…
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Linux Essentials
Install Deb. Pkg from Command Line You can install it using sudo dpkg -i /path/to/deb/file followed by sudo apt-get install -f . Echo & Touch echo 'something' >> file_name The >> will append your ‘something’ into the end of the…
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ROS Trivial Troubleshooting
Abstract: The most annoying parts are the tiny parts break you developing flow when dealing with the environments. This blog helps you to fix some common problems but hard to find especially when you don't know Linux very well. They are all my past p…
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ROS Essential Skills B4 You Start
ROS Naming Convention Class name is still camelCase: class TrackerUI Var names are small case underbared: var roi_window Function names are small case verb front underbared: func get_roi_window I feel it is comfy to do things in this way rather…
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Robotics 101: Sharpening The Tools -- Shorthands For Environment Setups
Abstract: After month and month working in robotics, I realize that a good knowledge of tooling could save a lot of time when developing things. However, getting to know use what tool and how to setup the tool without anyone's help could be a pain. T…
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How To Bind Mouse Keys in Ubuntu & How To Swap Ctr and Alt on Ubuntu and Windows
Abstract: As an Ubuntu user, sometimes you want to use the function keys from a mouse, for example, the Logitech ones. However, there is no such a software offered by their website to do the same thing as in Windows. This blog will give a quick instr…
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New Year New Posts
Life has gone hard when you have yourself only in a foreigner country. Robotics engineer is doing the hardest work to put thing made by other people together to make it work.…