Results 11 to 20 of about 6,061 (216)
Robust online active learning [PDF]
Quality and Reliability Engineering International, 2023 AbstractIn many industrial applications, obtaining labeled observations is not straightforward as it often requires the intervention of human experts or the use of expensive testing equipment. In these circumstances, active learning can be highly beneficial in suggesting the most informative data points to be used when fitting a model.
Davide Cacciarelli +2 more
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CoRR, 2022 Active regression considers a linear regression problem where the learner receives a large number of data points but can only observe a small number of labels. Since online algorithms can deal with incremental training data and take advantage of low computational cost, we consider an online extension of the active regression problem: the learner ...
Cheng Chen 0015, Yi Li 0002, Yiming Sun
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Online dense activity detection [PDF]
IET Computer Vision, 2021 Abstract Dense activity detection is a subtask of activity detection that aims to localise and identify multiple human activities in video clips. Existing methods adopt offline frameworks that require video frames to be available when activity detection begins. These offline methods are unable to be applied to online scenarios.
Li Weiqi +4 more
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Diversity of online community activities [PDF]
Proceedings of the nineteenth ACM conference on Hypertext and hypermedia, 2008 Web sites where users create and rate content as well as form networks with other users display long-tailed distributions in many aspects of behavior. Using behavior on one such community site, Essembly, we propose and evaluate plausible mechanisms to explain these behaviors.
Tad Hogg, Gábor Szabó 0002
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ASCILITE Publications, 2023 Much of the literature on flipped classrooms emphasises the physical classroom as the primary site for active learning, relegating the online environment to a place where content is delivered prior to students attending a workshop or tutorial. However, researchers have highlighted the rich opportunities for embedding interactivity in the online space ...
Stephanie Wilson +3 more
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The Structure of Online Activism
Sociological Science, 2014 Despite the tremendous amount of attention that has been paid to the internet as a tool for civic engagement, we still have little idea how “active” is the average online activist or how social networks matter in facilitating electronic protest. In this paper, we use complete records on the donation and recruitment activity of 1.2 million members of ...
Kevin Lewis +2 more
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Online active inference and learning [PDF]
Proceedings of the 17th ACM SIGKDD international conference on Knowledge discovery and data mining, 2011 We present a generalized framework for active inference, the selective acquisition of labels for cases at prediction time in lieu of using the estimated labels of a predictive model. We develop techniques within this framework for classifying in an online setting, for example, for classifying the stream of web pages where online advertisements are ...
Josh Attenberg, Foster J. Provost
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The domestication of online activism
First Monday, 2016 The convenience and usability of Web 2.0 platforms has meant that Internet traffic has migrated away from the Web. Through a combination of technological affordances, user regulations, and social norms these platforms are shaping the ways in which we can, and want to, communicate.
Klang, Mathias, Madison, Nora
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Partisan asymmetries in online political activity [PDF]
EPJ Data Science, 2012 We examine partisan differences in the behavior, communication patterns and social interactions of more than 18,000 politically-active Twitter users to produce evidence that points to changing levels of partisan engagement with the American online political landscape.
Michael D. Conover +3 more
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Active-Learning in the Online Environment
CoRR, 2020 Online learning is convenient for many learners; it gives them the possibility of learning without being restricted by attending a particular classroom at a specific time. While this exciting opportunity can let its users manage their life in a better way, many students may suffer from feeling isolated or disconnected from the community that consists ...
Zahra Derakhshandeh, Babak Esmaeili 0003
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