# The Tips of Compiling Hadoop on Ubuntu

### Introduction

With the work of optimizing the performance of MapReduce.
I do some solid work to understand the core source code of MapReduce.
And do some programming with the core code.
So there is something being introduced here to clean the way of compiling Hadoop on Ubuntu.

# The summary of the 5/17/2014 TOEFL test

### Introduction

I have participated in the

 1 TOEFL 
  test in May, 17th. It is the third time I have the test.
Though I got the score 88 in this test, the score is not really good and far away from my forecasting.
So I want to record the experience here and this will motivate me to get better. Moreover, I make up my mind to write in English in the blog. Please supervise me, thank you.

# The Tips of Installing Cloudera in Ubuntu

### Introduction

As TOEFL test being finally completed, I can enjoy the fun of playing with programs and servers.
Because

 1 Cloudera 
  is still not installed on the new servers, I can do it just taking the time.
Since I have installed 1Cloudera  on the Dell servers in our department, the progress is so easy for me. However, some of the processes are easy to forget. So I am writing this tips for retrieve later.

# Using D Star navigation in ROS

### 前言

 1 ROS 
 ,那时候还是为了做3D建模.

# Machine Learning Foundations note No.01

### 前言

 1 机器学习基石 
 这门课程的相关内容,在这里留下一些记录