ALTA logo Language Technology Programming Competition 2021
Task Description
Useful Information

ALTA Shared Task 2021

Welcome to the Language Technology Programming Competition. This competition is organised by ALTA.

What is ALTA?

ALTA is the Australasian Language Technology Association. ALTA's mission is to promote language technology research and development in Australia and New Zealand. ALTA organises workshops like ALTA 2021, and supports competitions like the Australian High-School Computational and Linguistics Olympiad (OzCLO) and this programming competition.

What is this competition about?

This is our twelfth programming competition and it aims at university students with programming experience. The competition is formatted as a "shared task": all participants compete to solve the same problem. The problem is the object of active research and nobody has (yet) obtained 100% correct results. In this competition, the winner will be the team who obtains the best results. If you participate and obtain 100% results you should definitely consider doing a PhD on the topic!

There are no limitations on the size of the teams or the means that they can use to solve the problem, as long as the processing is fully automatic - there should be no human intervention. We will give you a sample of data for you to use and develop your system from the point you decide to join the competition. As soon as you join the competition you will have access to the training and dev-test data that you can use to develop your system. To qualify for the prize of $150 $500 (AUD) you need to present your results and a description of your system at ALTA 2021.

What are the competition categories?

There are two categories: a student category and an open category.

  • All the members of the student category must be university students. It cannot have members that are full-time employed or that have completed a PhD.
  • Any other teams will fall into the open category.

How do I register?

To register, send an email to Diego Molla ( with the following information:

  • Name of your team;
  • Name and current studies, including the current year, degree name, and university (e.g. "third year of the Bachelor of IT at Macquarie University") of each team member.

We will send you a confirmation message and the training data for this year's task.

I want to know more about the task

See the task description at the menu bar on the left for the details of this year's task. If you want to know more about how to solve the task, see the useful information at the menu bar.

Who are the organisers?

Coordinator and main contact person (
Diego Molla-Aliod (Macquarie University).

Who are the sponsors?

If you are interested in sponsoring this or next shared tasks, contact Diego Molla (

Past Shared Tasks

  1. 2020
  2. 2019
  3. 2018
  4. 2017
  5. 2016
  6. 2015
  7. 2014
  8. 2013
  9. 2012
  10. 2011
  11. 2010

What's New
10 August 2023
We have created a paperswithcode dataset page. If you know of any papers that use our dataset, please add it to the page!
8 September 2021
The prize has increased to $500 (AUD). Looking forward to seeing high-quality submissions!
23 August 2021
The submission deadline has been extended to 11 October.
21 July 2021
Welcome to the ALTA 2021 Shared Task!


© ALTA 2021. Competition Organisers.