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The next AoIR 2015 session I'm in has only two papers, as one speaker has dropped out at the last minute; the first speaker therefore is Fan Mai, whose focus is on the use of Virtual Private Networks and anonymising proxy servers in China. Some such servers are used especially by expatriates living in China, trying to access western media sites that are otherwise blocked.

Such blocking is part of the Chinese censorship regime, of course, and a range of approaches to circumvention are rife in the country. There are very little hard data on the use of such tools …

The final speaker in this AoIR 2015 session is Stuart Geiger, whose interest is in the collective block lists on Twitter that are developed by anti-harassment communities. This bypasses or sits alongside Twitter's own, 'official' anti-harassment (and anti-spam, etc.) efforts.

Stuart's own work began with Wikipedia, which has has a set of complex internal governance mechanisms and is increasingly using automated bots to militate against vandalism and other disruptions. Such bots are a form of bespoke code that is separate from but interacts with the sovereign, governmental code that underlies the Wikipedia platform itself.

Much of this became …

The next speaker at AoIR 2015 is Sikana Tanupabrungsun, whose focus is on the use of Twitter by gubernatorial candidates in 36 state elections across the United States in 2014. The focus here is on @mentioning between candidates, and the analysis was conducted using automated content analysis approaches. This found that the most frequent mode of address was to attack other candidates.

Online campaigns have been studied for several years, and a general finding is that incumbents employ more position-taking strategies, while challengers operate more often in attack mode. This may play out on Twitter slightly differently because of the …

The first presenter at AoIR 2015 this morning is Fabio Giglietto, whose interest is in the Twitter response to the Charlie Hebdo attack. Very quickly, the hashtag #JeSuisCharlie emerged to express sympathy and support for the magazine; a negative #JeNeSuisPasCharlie also emerged, however, to critique the magazine's actions. Fabio's interest here is in how this hashtag was discursively positioned.

There were some 74,000 tweets by 41,000 unique users with the negative hashtag, between 7 and 11 January 2015, and Fabio's team used quantitative and qualitative approaches to analyse them. They followed the method developed by Stefan Stieglitz and me to …

The final presenter at AoIR 2015 today is Anissa Tanweer, whose interest is in the shift towards big data. This has been a major buzzword, and has enabled the rise of data science; her team has conducted an ethnography of the data science environment.

One of the major challenges in working with big data is how researchers envision their data; it is no longer possible to visually review the entire dataset, for example, and the picture of the dataset is constantly evolving. This is especially crucial in moments of breakdown that require a repair of the dataset, and may lead …

The next speaker at AoIR 2015 is Smiljana Antonijević, whose interest is in the emerging field of the digital humanities. How did this field come to be imagined? It's founding story is generally associated with the Jesuit priest Roberto Busa and his interest in using digital technologies for information management; this gradually developed into humanities computing or linguistic computing. The arrival of personal computing further broadened this, and the term digital humanities finally emerged in the mid-1990s.

Digital humanities has been visible especially in digital mapping of specific geographic sites. In developing literature databases, and in other key uses; there …

Up next at AoIR 2015 is the fabulous Luca Rossi, whose interest is in how scientific media events are now mediated via Twitter. His focus here is on the Rosetta mission and the Philae probe's landing on comet Churyumov-Gerasimenko. The mission was launched before Twitter was, but the approach and landing of the probe was covered closely by dedicated Twitter accounts and in widely promoted hashtags like #WakeUpRosetta.

This created a great deal of awareness and anticipation, and Luca's project gathered some 400,000 tweets related to the relevant hashtags. Using the approach for classifying hashtags that Stefan Stieglitz and …