of opinionated content has a positive or a negative connotation. Research on determining whether a term is indeed a marker of opinionated content (a subjective term) or not (an objective term) has been, instead, much more scarce. In this work we describe SENTIWORDNET, a lexical resource in which each WORDNET

Despite the importance of Supreme Court opinions for the American polity, scholars have dedicated little systematic research to investigating the factors that contribute to the content of the Court’s opinions. In this paper, we examine the ability of lower federal courts to shape the content

We extend the dynamic item response theory model of Martin and Quinn (2002) by including information about the court of origin and the opinion writer using a dynamic item response theory (IRT) model with a hierarchical prior. The model is estimated using Markov chain Monte Carlo methods

with the Chief Justice, and patterns of other justices joining those opinions are consistent with the idea that authors shape the content of opinions. * We thank Andrew Martin and Maya Sen for helpful comments and suggestions. Earlier versions of this paper were presented at the

The explosive growth of mailing lists, Web sites and Usenet news demands effective filtering solutions. Collaborative filtering combines the informed opinions of humans to make personalized, accurate predictions. Content-based filtering uses the speed of computers to make complete, fast

Information filtering agents and collaborative filtering both attempt to alleviate information overload by identifying which items a user will find worthwhile. Information filtering (IF) focuses on the analysis of item content and the development of a personal user interest profile. Collaborative

One of the important types of information on the Web is the opinions expressed in the user generated content, e.g., customer reviews of products, forum posts, and blogs. In this paper, we focus on customer reviews of products. In particular, we study the problem of determining the semantic

According to the Montreal definition, gastro-oesophageal reflux disease (GORD) is a condition that develops when reflux of the stomach contents into the oesopha-

In this paper we report research results investigating microblogging as a form of electronic word-of-mouth for sharing consumer opinions concerning brands. We analyzed more than 150,000 microblog postings containing branding comments, sentiments, and opinions.We investigated the overall structure

The conclusions and opinions expressed in this document are those of the author.