CONV-SEG

Convolutional neural network for Chinese word segmentation (CWS). The corresponding paper Convolutional Neural Network with Word Embeddings for Chinese Word Segmentation has been accepted by IJCNLP2017.

Author

The code is written and maintained by Chunqi Wang. If you have any problem in using this code, please email to [email protected].

Dependencies

• Python 2.7
• Tensorflow 1.0

It is better to use a nvidia GPU to accelerate the training procedure.

Data

Downlaod data.zip from here (Note that the SIGHAN datasets should only be used for research purposes). Extract data.zip to this directory. So the file tree would be:

convseg
|	data
|	|	datasets
|	|	|	sighan2005-pku
|	|	|	|	train.txt
|	|	|	|	dev.txt
|	|	|	|	test.txt
|	|	|	sighan2005-msr
|	|	|	|	train.txt
|	|	|	|	dev.txt
|	|	|	|	test.txt
|	|	embeddings
|	|	|	news_tensite.w2v200
|	|	|	news_tensite.pku.words.w2v50
|	|	|	news_tensite.msr.words.w2v50
|	tagger.py
|	train_cws.py
|	train_cws.sh
|	train_cws_wemb.sh
|	score.perl
|	README.md

How to use

First, give execute permission to scripts:

chmod +x train_cws.sh train_cws_wemb.sh

Train a preliminary model (CONV-SEG):

./train_cws.sh WHICH_DATASET WHICH_GPU

Train a model with word embeddings (WE-CONV-SEG):

./train_cws_wemb.sh WHICH_DATASET WHICH_GPU

We have two optional datasets: pku and msr. If you run the program in CPU environment, just leave the second argument empty.

For example, if you want to train the model CONV-SEG on the pku dataset and on gpu0, you should run:

./train_cws.sh pku 0

More arguments can be set in train.py.

Test Score

Model	PKU(dev)	PKU(test)	MSR(dev)	MSR(test)
CONV-SEG	96.8	95.7	97.2	97.3
WE-CONV-SEG	97.5	96.5	98.1	98.0

Demo

Browse http://ubuntu23447.cloudapp.net:8888 for a demo.