manoel horta ribeiro

Stuff I Learned at #TheWebConf2019

Manoel Horta Ribeiro (@manoelribeiro),

During the last week, I attended the Web Conference 2019 (#TheWebConf2019). I had a blast, and the pleasure to meet and hang out with my perspective advisor in Switzerland, some future EPFL colleagues, some folks I befriended in social media and an old friend. Moreover, and perhaps more importantly, I was able to share the research I did last summer in Switzerland with Bob and to be exposed to some pretty cool stuff. The rest of this post is divided into sections with no clear logic to it….

The #CyberSafety Workshop

In the first day of the conference, I attended this a cool workshop on Cybersafety, although the name may evoke terms like malwares and botnets, this was not was the workshop was about… Instead, it was mostly about social networks and fringe communities (which certainly tells something about the current state of affairs in the world, hehe). Some key takeaways from the workshop for me was:

  • For some websites, like Reddit, we need to build tools that distribute moderation to the community at large while still having some sort of central control.

  • Hate data is hard to label. There is disagreement (which may be cultural or contextual) not to mention code-words and cryptic references.

  • Threats in the cyberspace now include stuff like doxxing, crypto scams, cyberbullying and conspiracy theories.

  • Online services do not exist in a vacuum and to study things like hate speech we may need to look at multiple platforms, and not just one.

  • Data-driven approaches can complement traditional hate-speech watchdogs by surfacing hate and broadening our understanding of the phenomena.

The #WikiWorkshop2019

A lot of the knowledge in Wikipedia is still hidden across languages. German and English share only around one million articles… je

On the second day, I attended the equally awesome Wiki Workshop. It was the first Wiki-centric event I ever attended and I really enjoyed the work presented and the spirit of the community working around Wikipedia. There, a highlight for me was Denny Vrandečić’s talk on what is beyond Wiki Data (Wikipedia’s Knowledge Graph). One of the ways Denny proposes to bring knowledge to more individuals (and to more languages) is to create this idea of constructors and renderers:

  • A constructor would be formalized description of some information in Wikipedia. For example, an election (whose description could involve candidates, number of votes per candidate and a winner).

  • A renderer would be a realization of this constructor in natural language. Each language would have its own renderer.

Together, these things would allow for the information stored in the Knowledge graph of wiki-data to be rendered as text across many languages. Moreover, it seemed like a really clever way to avoid unnecessary work, as creating these renderers would be much more simple than creating multiple texts.

Day #1

I wish I had more on Web-related AI stuff, but you gotta give google some credit for their achievements in ML for medicine…

The first keynote in the conference was by Jeff Dean, from Google. In his talk, I had a feeling I was being exposed to pretty much everything NIPS-related that Google had done in the last 5 years. While the stuff Google did is doubtlessly great, I was left wondering on the “questions not answered” by the keynote… Google is probably one of the biggest deployers of socio-technical systems in the world, and while a retrospective on ML-related advancements is great, I’d rather have listened more about what is Google’s vision on how these technologies may be employed in the future.

Also on the first day, two papers that stood out for me were:

Day #2

Bob and Stephen introduce the schedule for the day… How can we fine tune our fundamental values with technology?

During the second day of conference, a special event was held to discuss the future of the open web. It was a unique event in the sense that it included journalists, lawyers and even a member of the EU parliament. The atmosphere of the talks ranged from rather grim — with a journalist talking on political threats to the open web — to quite optimistic, with Brewster Kahle, founder of the internet archive, advocating for a new decentralized internet (for example this website). If on monday I had a display of the harms that have flourished in the the anarchy and the anonymity of the open web, on Wednesday I was reminded of its benefits. A cool mantra I got from the talks from David Keye’s talk was that:

“companies moderate, governments regulate”

This may sound borderline obvious, but it encompasses a plethora of problems that the web currently has. On one hand, problems like the ones approached in the #Cybersafety workshop have a lot to do with problems on how companies moderate content: for example allowing hateful content from fringe communities like gab and 4chan bleed into their platforms. On the other, you have all these problems that arise when governments over-regulate the internet, which may, for example, compromise one’s freedom of speech and access to information. Also, the gap between what government regulates and what companies moderate is very interesting: what should lay there?

Day #3

Claire Wardle claiming that we should try to understand these communities and these people rather than providing then with more information (which they already have, but choose to ignore).

In the third day we had a keynote by Claire Wardle, a TED fellow. Claire’s keynote included cool discussions on the web information environment; deep fakes, how misinformation reaches professional media, what are different types of misinformation. A focus she gave which was refreshing for me was the idea of educating the public on dealing with fake news. It is a task that is most likely necessary, yet, it is hard, and often conflated with politics. Moreover, there is not a very clear path on how to do it…. Maybe we should be doing more research on that?

Also on that day a paper that really stood out to me was Generalists and Specialists: Using Community Embeddings to Quantify Activity Diversity in Online Platforms. In the paper, Isaac and Ashton had this really cool idea of understanding two different user patterns on Reddit, generalists (who would post in many communities from varied topics) and specialists (who would focus on some topic). Noteworthy findings include that specialists engage more but for fewer times in Reddit, and that they are the ones making outstanding comments. Moreover, they came up with this single metric to analyse users and communities in that spectrum, which they named the GS-score.

My poster

Me presenting my pretty nice looking poster.

On wednesday I presented my work on message distortion in information cascades. The paper is a fun crowdsourced experiment where we ask crowdworkers to summarize medical abstracts in two settings: looking at the original text (duh), and iteratively, like in a telephone game. With this data, we are able to separate two effects that make info gets distorted in cascades: summarization and word-of-mouth. We found some clever ways of tracking information and it turns out the telephone effect exists and it impacts the most important information the most (e.g. the conclusions of the abstract). However, the effect has its nuances, and good intermediate summaries may actually lead to improvements when comparing to the control setting. To read more about this and about some observational findings we had on summarization (e.g. what strategies perform better?) check out the paper :).

Written on May 21, 2019