KeyGraph is a visualization tool for discovery of relations among text-based data. This paper discusses a new application of KeyGraph for visualization of discussions in the comments of a blog entry in Slashdot. We propose an approach that applies KeyGraph successively to multiple chunks of comments, each chunk having a different range of moderation scores provided by Slashdot. This approach gi...

While online communities have become increasingly important over the years, the moderation of user-generated content is still performed mostly manually. Automating this task is an important step in reducing the financial cost associated with moderation, but the majority of automated approaches strictly based on message content are highly vulnerable to intentional obfuscation. In this paper, we ...

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We study how total factor productivity (TFP), energy prices and the great moderation are linked. First, we estimate a joint stochastic process for the energy price and TFP and establish that until 1982:II, energy prices negatively affected productivity. This spill-over has since disappeared. Second, we show that within the framework of a Dynamic Stochastic General Equilibrium (DSGE) model, the ...

Experimenting with a new dataset of 1.6M user comments from a news portal and an existing dataset of 115K Wikipedia talk page comments, we show that an RNN operating on word embeddings outpeforms the previous state of the art in moderation, which used logistic regression or an MLP classifier with character or word n-grams. We also compare against a CNN operating on word embeddings, and a word-l...

Although moderation and harm reduction approaches to the treatment of alcohol problems are accepted in many parts of the world, they continue to be rare in the US. A major reason for this state of affairs has to do with the way alcohol treatment services in the US developed, and in particular the creation of a group of paraprofessional counselors many of whom attributed their recovery to the 12...

The majority of OECD countries has experienced a reduction in the volatility of output during the past two and a half decades. This period has also been characterized by a process of capital accounts liberalization among these countries. We study an open economy business cycle model with financial market frictions and show that the international liberalization of capital markets can lead to low...

We study a stylized theory of the volatility reduction in the U.S. after 1984—the Great Moderation—which attributes part of the stabilization to less volatile shocks and another part to more difficult inference on the part of Bayesian households attempting to learn the latent state of the economy. We use a standard equilibrium business cycle model with technology following an unobserved regime-...

In diesem Artikel stellen wir unseren Beitrag zur Moderation asynchroner CSCL-Prozesse vor, der theoretisch begründete Moderatorenfunktionalitäten einer CSCL-Umgebung und ihre Evaluation umfasst. Ausgehend von relevanten Arbeiten in diesem Bereich beschreiben wir zunächst unseren Ansatz der Moderationsunterstützung in der kollaborativen Lernumgebung KOLUMBUS 2. In einer qualitativen Studie wurd...