NLP first interview Sledgehammer, NLTK introduction

Previously downloaded a PDF, the title is "Natural language processing with Python", very interesting, plus NLP and machine learning is hot, want to take advantage of the summer vacation to dabble. So began the journey of getting started with NLP.

Installation Environment: Ubuntu14.04 Desktop version, Python version: 2.7

First step: Install NLTK, first install the PIP tool: sudo apt-get install PYTHON-PIP, install with PIP after installation nltk:sudo pip install PYTHON-NLTK.

Step two: Download all the NLTK packages and enter the Python interactive mode in the terminal.

>>> import nltk>>> nltk.download () >>> d>>> All

Then wait, the bag is very big, I am off and on for two or three days before the end.

The third step is to install the NumPy and matplotlib tools, mainly for data analysis and graphical display. Here is a reference to someone else's part:

Installation of NumPy is relatively simple, the following commands can be completed

$ sudo apt-get install python-numpy$ sudo apt-get install python-scipy

Installing matplotlib is relatively complex and requires first installing its dependent package libpng and FreeType installation libpng:

$ sudo apt-get install Libpng-dev

Install FreeType:

$ cd ~/wget http://download.savannah.gnu.org/releases/freetype/ freetype-2.4.10.tar.gztar zxvf freetype-2.4. . Tar . gz$ CD FreeType-2.4. Ten/$. /makesudomakeinstall

After the PIP is installed, you can use the following command to find the Matplotlib and view its installation status

sudo pip search matplotlib

Installing Matplotlib

sudo Install matplotlib

Complete the above steps, you can formally enter the NLTK study!

NLP first interview Sledgehammer, NLTK introduction