On June 23rd 2016, UK held the referendum which ratified the exit from the EU. While most of the traditional pollsters failed to forecast the final vote, there were online systems that hit the result with high accuracy using opinion mining techniques and big data. Starting one month before, we collected and monitored millions of posts about the referendum from social media conversations, and ex...

We present a demonstrator that visualizes the Twittersphere debate on whether the UK should remain in or leave the European Union. Data is collected using three strategies: hashtag search terms, extraction from the full stream and following specific users. The demonstrator can be used to show the different discussion topics identified by the different search strategies.

This study explores the geographic dependencies of echo-chamber communication on Twitter during the Brexit referendum campaign. We review the literature on filter bubbles, echo chambers, and polarization to test five hypotheses positing that echo-chamber communication is associated with homophily in the physical world, chiefly the geographic proximity between users advocating sides of the campa...

Social media collect and spread on the Web personal opinions, facts, fake news and all kind of information users may be interested in. Applying argument mining methods to such heterogeneous data sources is a challenging open research issue, in particular considering the peculiarities of the language used to write textual messages on social media. In addition, new issues emerge when dealing with...

In a referendum conducted in the United Kingdom (UK) on June 23, 2016, $51.6\%$ of the participants voted to leave the European Union (EU). The outcome of this referendum had major policy and financial impact for both UK and EU, and was seen as a surprise because the predictions consistently indicate that the ``Remain'''' would get a majority. In this paper, we investigate whether the outcome o...

Deportation is a core state practice for the management and control of time-served foreign national offenders. Post-Brexit law changes mean that EU offenders in UK will become subject to same deportation rules which apply non-EU This article argues applied before Brexit, derived from EU’s Citizens’ Rights Directive, was underpinned by focus on offender as an individual person. In contrast, appl...