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On-line journalistic sites publish several news and stories every day. Readers of these sites may comment a story, and, as a consequence, a single story might receive thousands of comments. The quality of these comments may vary a lot, from spams and trolls to truly useful information. Separating good from bad comments is an important task, and is the(More)
With the increasing "data deluge" scientists face today, the analysis and processing of large datasets of structured data is a daring task. Among such data, large graphs are gaining particular importance with the growing interest on social networks and other complex networks. Given the dimensions considered, parallel processing is essential. However, users(More)
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