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ACM Transactions on Social Computing, Volume 1 Issue 1, February 2018

Introduction to ACM Transactions on Social Computing
Kevin Crowston
Article No.: 1e
DOI: 10.1145/3181713

Online Sequencing of Non-Decomposable Macrotasks in Expert Crowdsourcing
Heinz Schmitz, Ioanna Lykourentzou
Article No.: 1
DOI: 10.1145/3140459

A large class of computational problems involve the determination of properties of graphs, digraphs, integers, arrays of integers, finite families of finite sets, boolean formulas and elements of other countable domains. Through simple encodings...

Microblog Analysis as a Program of Work
Peter Tolmie, Rob Procter, Mark Rouncefield, Maria Liakata, Arkaitz Zubiaga
Article No.: 2
DOI: 10.1145/3162956

Inspired by a European project, PHEME, that requires the close analysis of Twitter-based conversations in order to look at the spread of rumors via social media, this article has two objectives. The first of these is to take the analysis of...

Quantifying Controversy on Social Media
Kiran Garimella, Gianmarco De Francisci Morales, Aristides Gionis, Michael Mathioudakis
Article No.: 3
DOI: 10.1145/3140565

Which topics spark the most heated debates on social media? Identifying those topics is not only interesting from a societal point of view but also allows the filtering and aggregation of social media content for disseminating news stories. In...

ConsensUs: Supporting Multi-Criteria Group Decisions by Visualizing Points of Disagreement
Weichen Liu, Sijia Xiao, Jacob T. Browne, Ming Yang, Steven P. Dow
Article No.: 4
DOI: 10.1145/3159649

Groups often face difficulty reaching consensus. For complex decisions with multiple criteria, verbal and written discourse alone may impede groups from pinpointing and moving past fundamental disagreements. To help support consensus building, we...