Profiling Fake News Spreaders on Twitter

Sponsored by
Symanto Research


  • Task: Given a Twitter feed, determine whether its author is keen to be a spreader of fake news.
  • Input: [data]
  • Output: [verifier]
  • Evaluation: [code]
  • Submission: [submit]
  • Baseline: [code]


Fake news has become one of the main threats of our society. Although fake news is not a new phenomenon, the exponential growth of social media has offered an easy platform for their fast propagation. A great amount of fake news, and rumors are propagated in online social networks with the aim, usually, to deceive users and formulate specific opinions. Users play a critical role in the creation and propagation of fake news online by consuming and sharing articles with inaccurate information either intentionally or unintentionally. To this end, in this task, we aim at identifying possible fake news spreaders on social media as a first step towards preventing fake news from being propagated among online users.

After having addressed several aspects of author profiling in social media from 2013 to 2019 (bot detection, age and gender, also together with personality, gender and language variety, and gender from a multimodality perspective), this year we aim at investigating if it is possbile to discriminate authors that have shared some fake news in the past from those that, to the best of our knowledge, have never done it.

As in previous years, we propose the task from a multilingual perspective:

  • English
  • Spanish
NOTE: Although we recommend to participate in both languages (English and Spanish), it is possible to address the problem just for one language.


We are happy to announce that the best performing team at the 8th International Competition on Author Profiling will be awarded 300,- Euro sponsored by Symanto.



The uncompressed dataset consists in a folder per language (en, es). Each folder contains:
  • A XML file per author (Twitter user) with 100 tweets. The name of the XML file correspond to the unique author id.
  • A truth.txt file with the list of authors and the ground truth.
The format of the XML files is:
    <author lang="en">
            <document>Tweet 1 textual contents</document>
            <document>Tweet 2 textual contents</document>
The format of the truth.txt file is as follows. The first column corresponds to the author id. The second column contains the truth label.


Your software must take as input the absolute path to an unpacked dataset, and has to output for each document of the dataset a corresponding XML file that looks like this:

    <author id="author-id"

The naming of the output files is up to you. However, we recommend to use the author-id as filename and "xml" as extension.

IMPORTANT! Languages should not be mixed. A folder should be created for each language and place inside only the files with the prediction for this language.


The performance of your system will be ranked by accuracy. For each language, we will calculate individual accuracies in discriminating between the two classes. Finally, we will average the accuracy values per language to obtain the final ranking.

Task Committee