Overview

I installed mecab-ipadic-neologd on Sakura VPS with ubuntu18.04LTS installed so that it can be called from python. mecab-ipadic-neologd couldn't be installed on the server due to lack of memory, so I scped a locally created dictionary.

environment

Sakura's VPS 2G plan The OS is as follows

$ cat /etc/os-release
NAME="Ubuntu"
VERSION="18.04.4 LTS (Bionic Beaver)"
((Omitted below)

$ python -V
Python 3.6.8

install mecab

Execute the following command on the remote server.

sudo apt install mecab
sudo apt install libmecab-dev
sudo apt install mecab-ipadic-utf8

Check the operation.

$echo god| mecab
God noun,General,*,*,*,*,God,Kami,Kami
Particles,Case particles,Collocation,*,*,*,What,Itte,Itte
Auxiliary verb,*,*,*,Literary language,Uninflected word,Ru,Ru,Ru
EOS

Reference: Install mecab on ubuntu 18.10

A copy of mecab-ipadic-neologd

This time, I have already installed mecab-ipadic-neologd on my local Mac PC, so I will scp the dictionary from there.

Check the location of the mecab-ipadic-neologd dictionary on your local mac.

$ sudo find / -name mecabrc
/usr/local/etc/mecabrc
/usr/local/Cellar/mecab/0.996/.bottle/etc/mecabrc

$ cat /etc/usr/local/mecabrc
;
; Configuration file of MeCab
;
; $Id: mecabrc.in,v 1.3 2006/05/29 15:36:08 taku-ku Exp $;
;
;dicdir =  /usr/local/lib/mecab/dic/ipadic
dicdir =  /usr/local/lib/mecab/dic/mecab-ipadic-neologd
(The following is omitted)

Scp the dictionary from local to remote.

$ scp -r /usr/local/lib/mecab/dic/mecab-ipadic-neologd [email protected]:~/

Check the operation of mecab on the remote server.

$echo god| mecab -d ~/mecab-ipadic-neologd
God noun,Proprietary noun,General,*,*,*,God,Camitel,Camitel
EOS

You can see that mecab-ipadic-neologd can be used because "God" that was not correctly recognized in the initial dictionary can be recognized with one word.

Reference: Use mecab-ipadic-NEologd with a cheap plan of Sakura VPS

Set default dictionary to mecab-ipadic-neologd

Set the default dictionary of mecab on the remote server to mecab-ipadic-neologd. It is almost the same as For Mac, just edit mecabrc.

Look for mecabrc on the remote server and check the contents.

$ sudo find / -name mecabrc
/etc/mecabrc

$ cat /etc/mecabrc
;
; Configuration file of MeCab
;
; $Id: mecabrc.in,v 1.3 2006/05/29 15:36:08 taku-ku Exp $;
;
dicdir = /var/lib/mecab/dic/debian
(The following is omitted)

The mecab dictionary seems to be stored in / var / lib / mecab / dic by default, so move mecab-ipadic-neologd there as well and change mecabrc to support it.

$ sudo mv ~/mecab-ipadic-neologd /var/lib/mecab/dic/
$ sudo nano /etc/mecabrc

(Change before)

;
; Configuration file of MeCab
;
; $Id: mecabrc.in,v 1.3 2006/05/29 15:36:08 taku-ku Exp $;
;
dicdir = /var/lib/mecab/dic/debian
(The following is omitted)

(After change)

;
; Configuration file of MeCab
;
; $Id: mecabrc.in,v 1.3 2006/05/29 15:36:08 taku-ku Exp $;
;
;dicdir = /var/lib/mecab/dic/debian
dicdir = /var/lib/mecab/dic/mecab-ipadic-neologd
(The following is omitted)

If you can change it correctly, you will be able to recognize "God" in one word without having to look it up in a dictionary.

$echo god| mecab -d ~/mecab-ipadic-neologd
God noun,Proprietary noun,General,*,*,*,God,Camitel,Camitel
EOS

mecab-python3 installation

Make mecab callable from python3.

sudo apt install swig
sudo apt install python3-pip
sudo pip3 install mecab-python3

Check if you can call it from python.

$ python
Python 3.6.8 (default, May 23 2019, 19:27:09) 
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import MeCab
>>> MeCab.Tagger().parse('God')

Failed initializing MeCab. Please see the README for possible solutions:

    https://github.com/SamuraiT/mecab-python3#common-issues

If you are still having trouble, please file an issue here, and include the
ERROR DETAILS below:

    https://github.com/SamuraiT/mecab-python3/issues

You don't have to write the issue in English.

------------------- ERROR DETAILS ------------------------
arguments: 
error message: [ifs] no such file or directory: /usr/local/etc/mecabrc
----------------------------------------------------------
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/shimaya/.pyenv/versions/3.6.8/lib/python3.6/site-packages/MeCab/__init__.py", line 124, in __init__
    super(Tagger, self).__init__(args)
RuntimeError

I get an error. It is said that / usr / local / etc / mecabrc does not exist. Since mecabrc should be in / etc / mecabrc, it seems that I have gone to read a place that does not exist. The mecabrc that python goes to read can be specified by explicitly preparing an environment variable called MECABRC.

$ nano ~/.bash_profile
(Add the following)
export MECABRC=/etc/mecabrc

$ source ~/.bash_profile

When I tried it again, I was able to morphologically analyze "God" in one word.

$ python
Python 3.6.8 (default, May 23 2019, 19:27:09) 
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import MeCab
>>> MeCab.Tagger().parse('God')
'God\t noun,Proprietary noun,General,*,*,*,God,Camitel,Camitel\nEOS\n'

Reference: Install mecab on ubuntu 18.10 Reference: Change the default dictionary of MeCab called from Python