Painting with Color

December 25, 2013 Sketch Book, Work & Life No comments

This the first time for me to paint with color using an IPad 2.

I used procreate to paint this picture. It took me about 6 hours finising it.

And this one is painted with Sketchbook Pro.

Mika Nakashima

October 1, 2013 Sketch Book, Work & Life No comments



A Heart Beating Journey In Taiwan

September 2, 2013 Travel No comments

I together with my two teamates, two teachers and two school mates went to Taiwan for 5 days from 2013.8.26 to 8.30 to attend TECO Green Technology Contest 2013. We had a great time in this 5 days.

Day 1 Arriving
We arrived at Taiwan in Taoyuan International Airport at about 12 AM after which we[……]

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TECO Green Technology Contest 2013

September 1, 2013 MCU, Tech 1 comment

This is the presentation I gave in the 2013 TECO Green Tech International Contest World Final.
for English watcher:(YouTube)

for Chinese watcher:(Youku)

TECO Green Technology Contest is a contest organized by TECO Technology Foundation in Taiwan.

Our team built up a project called the In[……]

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AGI 2013 Summer School: Notes of NARS

August 5, 2013 Artificial Intelligence & Data Mining No comments

L#1 notes:

L#2 notes:

L#3 notes:

L#4 notes:

L#5 notes:

AGI 2013 Summer School

August 5, 2013 Artificial Intelligence & Data Mining, Tech No comments
I attended the AGI 2013 Summer School last month, which was really impressing. At the very beginning, I was just interested about artificial intelligence and did not know what Artificial General Intelligence was. And during the summer sc[……]

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The Intelligent Navigation And Tracking Robot System

August 2, 2013 MCU, Tech 1 comment

Video for English watcher:

Video for Chinese watcher:(if it doesn’t work click here)

This project won:
1st Prize in Challenge Cup 2013 Beijing Undergraduates Curricular-extra Academic Science and Technology Competition
2nd Prize in Challenge Cup 2013 National Undergraduates Curri[……]

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Install R-Rattle on Ubuntu12.04 64bit

June 24, 2013 Pro_R No comments

If you have installed R in your Ubuntu and you need to some machine learning work on it, Rattle is recommended.

> install.packages(“RGtk2”)
> install.packages(“rattle”)

You may met problems when installing RGtk2, like this:
GNU/Linux: configure: error: GTK version 2.8.0 required

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My view on Data Mining and Machine Learning

June 17, 2013 Artificial Intelligence & Data Mining, Tech No comments ,

The Relationship Between Data Mining and Machine Learning
Its been a long time since I get to know about such concepts as: Data Mining, Machine Learning, Artificial Intelligence, Pattern Recognition and etc.. However, they are in a kind of mess and its hard to figure out the relationship between th[……]

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JDK+MySQL+Tomcat+Eclipse+MyEclipse+Hadoop+Mahout Installation on Ubuntu 12.04

June 15, 2013 Artificial Intelligence & Data Mining No comments ,

Mahout integrates a lot of common machine learning algorithms which faciliates those who want to do some research in data mining. It is based on Java and a lot of need to be done before you can make it work. At least you will need JDK, Eclispse, Hadoop and Mahout. But I strongly recommend all those[……]

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Agent Based Video Recommendation Simulation Using Netlogo

May 11, 2013 Agent Based Simulation, Tech No comments

I’d spent two weeks on Netlogo Manual and a tutorial on youtube before I wrote this program. Netlogo is a good agent based simulation platform while its math calculation ability is poor which can be compensated by R-extension.

This program is to simulate the video recommendation on Video sites su[……]

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GNU Octave (Matlab’s opponent)

April 29, 2013 Octave No comments

I attend Andrew Ng’s Machine Learning courses on Coursera recently. And he recommend us to use GNU Octave to do some calculation.

Actually, GNU Octave is very powerful as it is said on the title: Matlab’s

Vim !

April 4, 2013 Programming No comments


Vim is a powerful text editor and it is the most popular one for Linux users.
For details of it you can go to

And Vim is usually installed as defaut for Ubuntu users. You only need to type “vim” in the terminal and you can get access to it.[……]

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Link R and Netlogo in Ubuntu

April 3, 2013 Agent Based Simulation, Pro_R No comments


Netlogo is a powerful platform for simulation while its mathimatical calculation is relatively poor comparing to some specific softwares. So it is a good idea to embedd R in Netlogo so that the problem can be solved. This article will show you hao to do the “A” in the upside picture which comes[……]

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Install R in Ubuntu 12.04 64 bit

April 2, 2013 Pro_R 1 comment


1. Update:
To obtain the latest R packages, add an entry like

deb http:///bin/linux/ubuntu raring/


deb http:///bin/linux/ubuntu quantal/


deb http:///bin/linux/ubuntu precise/


deb http:///bin/linux/ubuntu lucid/

in your /etc/apt/sources.list file, rep[……]

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Andrew Ng’s Lecture @ Tsinghua U.

March 29, 2013 Tech No comments

Andrew Ng came to Beijing to give two lectures this Tuesday, one in Baidu and another in Tsinghua U.. And I was very lucky to go to his lecture in Tsinghua to be acknowledged with his ideas in Machine Learning.

I’ve been focusing on Big Data and Data Mining for several months. From where I stan[……]

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Get Started With ABS (Agent Based Simulation)

March 22, 2013 Agent Based Simulation No comments

ABS is short for Agent Based Simulation, or Agent Based Modeling. I was acknowledged to this from my tutor, Pro.Guo. She is doing some research in data mining and some of her projects are on the recommendation algorithm applied to video websites such as Youtube. And the problem is that the tradition[……]

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ARM7 Controlled Robot

February 24, 2013 Embedded System 5 comments

Video:(if it doesn’t work please click here)

This is a smart car controlled by LPC2148, and its position can be detected by using Zigbee equipments which is connected to a laptop which can display it.

The structure of the car model:

This is the Drivel Module and only after using it ca[……]

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SPFA + DPThe Ghost Blows Light

February 24, 2013 Dynamic Programming No comments

The Ghost Blows Light
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 1017 Accepted Submission(s): 303

Problem Description

My name is Hu Bayi, robing an ancient tomb in Tibet. The tomb consists of N rooms (numbered from 1 to N) wh[……]

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DP : Hometask

February 24, 2013 Dynamic Programming No comments

time limit per test
2 seconds
memory limit per test
256 megabytes
standard input
standard output

Sergey attends lessons of the N-ish language. Each lesson he receives a hometask. This time the task is to translate some sentence to the N-ish language. Sentences of the[……]

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