2ch preprocessor

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This is a 2ch crawler & preprocessor for creating chatbot-rnn readable format. The crawler part is almost complete, but the preprocessor part is still under development.

• TODO ITEMS:
  • Normalize kanji, hirakana and katakana to romaji (alphabet) to decrease the vocabulary amount.
  • truncate useless ANSI Art
  • create a post processor to convert romaji to kanji, hirakana, or katakana
  • preprocess data as dialog format defined in chatbot-rnn

Features

• Ignore some functional boards, and crawl through all the threads in 2ch
• checkpoint recovery (bug should be fixed now)
• multiple workers for crawling
• save to sqlite db

Installation

# Ubuntu
sudo apt-get install sqlite3
# Mac
brew install sqlite3

git clone https://github.com/zenixls2/2chpreprocess
cd 2chpreprocess
virtualenv venv
source venv/bin/activate
pip install -r requirements.txt

Execution

usage: main.py [-h] [-t] [-r] [-p] [-w WORKER]

2ch data preprocessor & crawler

optional arguments:

• -h, --help show this help message and exit
• -t, --topic get topic links
• -r, --rerun ignore cache results and rerun
• -p, --process process generated topic link
• -w WORKER, --worker WORKER number of workers

First crawl out all topics:

source venv/bin/activate
python main.py -t

And crawl through all threads:

source venv/bin/activate
python main.py -p -w ${WORKER}

Notice that this could stop by users at any time. The process could be recovered using the checkpoint.pkl file stored in save. The result is by default save in save directory. You could use -r to ignore the checkpoint settings and re-run.

About Crawling Result

There should be an output.db in your save directory once you execute with -p option. The scheme in sqlite3 db is defined as follows:

messages:
  - name(unicode) // category name
  - id(int) // floor id / index id in each thread
  - thread_id(text) // the topic's thread id
  - message(text) // the message content for that index

You could use sqlite3 to access it:

bash$> sqlite3 output.db
SQLite version 3.16.0 2016-11-04 19:09:39
Enter ".help" for usage hints.
sqlite> select * from messages limit 2;
趣味一般|1|1112706898|トイレでするより､外で立ちションをするほうが､  解放感があって気持ちがいいですよね｡
趣味一般|2|1112706898|に（´・ω・２）