AI ethics on Thursday, 5 May 2016

This paper examines the question of "values in repair" -- the distinct forms of meaning and care that may be built into human-technology interactions through individual and collective acts of repair. Our work draws on research in HCI and the social sciences and findings from ethnographic studies in four sites -- two amateur "fixers" collectives' in Brooklyn and Seattle, USA and two mobile phone repair communities in Uganda and Bangladesh -- to advance two arguments. First, studies of repair acco

What are the limits of automated Twitter sentiment classification? We analyze a large set of manually labeled tweets in different languages, use them as training data, and construct automated classification models. It turns out that the quality of classification models depends much more on the quality and size of training data than on the type of the model trained. Experimental results indicate that there is no statistically significant difference between the performance of the top classificatio