Notes-ltp server service construction guide

Foreword

Recently, I wanted to learn about nlp-related technologies, so I found ltp to get started.

ltp homepage: http://ltp.readthedocs.io/zh_CN/latest/index.html

ltp is a Chinese natural language processing suite developed by Harbin Institute of Technology. Now it also provides cloud services to the outside world, but there are certain restrictions on the frequency and number of interface calls:http://www.ltp-cloud.com/

The ltp server allows users to start an nlp service locally, the model used by the service can be dynamically upgraded, and the service is exposed to the http protocol. Relatively speaking, the usage is more friendly and allows multilingual calls.

Build steps

Download the installation file from the official website, take the version I use as an example: ltp-3.4.0.zip, unzip the file, and generate a folder ltp-3.4.0.

Enter the decompressed folder and enter the following command:

./configure

make

It's like this when compiling

Wait patiently for the end of the make command, and then start preparing the model file.

The so-called model file is used when ltp is running, and can also be downloaded from the official website. The version I use is ltp_data_v3.4.0.zip.

Unzip the model file to the newly compiled folder ltp-3.4.0, unzip and rename the resulting folder to ltp_data (you can also not rename it, but you need to manually specify the path when starting the server).

Finally, start the server. Note that some parameter settings are required during startup. My own startup command is:

./bin/ltp_server --port 8020 --threads 4 --log-level 2 &

The specific meaning of the parameters can be read by yourself.

curl test output

curl -d "s=I love Beijing" "http://127.0.0.1:8020/ltp"

carry out

supplement:

The ltp server crashes when running locally. In fact, the author has built a simple health check script for us. Please see src/server/run.pl. A little modification will ensure that the service is always online.

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