How To Install cg3 on Ubuntu 20.04

In this tutorial we learn how to install cg3 on Ubuntu 20.04. cg3 is Tools for using the 3rd edition of Constraint Grammar (CG-3)

Introduction

In this tutorial we learn how to install cg3 on Ubuntu 20.04.

What is cg3

cg3 is:

Constraint Grammar compiler and applicator for the 3rd edition of CG that is developed and maintained by VISL SDU and GrammarSoft ApS.

CG-3 can be used for disambiguation of morphology, syntax, semantics, etc; dependency markup, target language lemma choice for MT, QA systems, and much more. The core idea is that you choose what to do based on the whole available context, as opposed to n-grams.

See https://visl.sdu.dk/cg3.html for more documentation

There are three methods to install cg3 on Ubuntu 20.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install cg3 Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install cg3 using apt-get by running the following command:

sudo apt-get -y install cg3

Install cg3 Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install cg3 using apt by running the following command:

sudo apt -y install cg3

Install cg3 Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install cg3 using aptitude by running the following command:

sudo aptitude -y install cg3

How To Uninstall cg3 on Ubuntu 20.04

To uninstall only the cg3 package we can use the following command:

sudo apt-get remove cg3

Uninstall cg3 And Its Dependencies

To uninstall cg3 and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:

sudo apt-get -y autoremove cg3

Remove cg3 Configurations and Data

To remove cg3 configuration and data from Ubuntu 20.04 we can use the following command:

sudo apt-get -y purge cg3

Remove cg3 configuration, data, and all of its dependencies

We can use the following command to remove cg3 configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge cg3

References

Summary

In this tutorial we learn how to install cg3 package on Ubuntu 20.04 using different package management tools: apt, apt-get and aptitude.