Credit ratings convey credit risk information to participants in financial markets, including investors, issuers, intermediaries and regulators. This paper proposes an automatic text analysis system for financial news and analyzes the effects of news coverage and sentiment factors on credit ratings. Our experiment results show that firms with higher news coverage received worse ratings in the n...

background: in spite of the increased range of inactivity and obesity among iranian adults, insufficient research has been done on environmental factors influencing physical activity. as a result adapting a subjective (self-report) measurement tool for assessment of physical environment in iran is critical. accordingly, in this study neighborhood environment walkability scale (news) was adapted...

information dissemination throughout the society is carried out by a phenomenon called news. this phenomenon is in relation to various social institutions as well as different aspects of people’s lives. in the present article, the writers believe that, firstly, the phenomenon of news, despite the operations carried out to disseminate and present it, has material value and that its economic valu...

background :people are increasingly interested in health news. as a mass media, the ‘islamic republic of iran broadcasting’ (irib) has the highest number of target audiences. in iran, some people follow health news via health programs on satellites and other means of communication. however, all of these programs do not live up to the standards of scientific evidence. in this study, we examined ...

The written medium through which we commonly learn about relevant news are news articles. Since there is an abundance of news articles that are written daily, the readers have a common problem of discovering the content of interest and still not be overwhelmed with the amount of it. In this paper we present a system called Event Registry which is able to group articles about an event across lan...

What is the information content of news-based measures of sentiment? How are they related to aggregate economic fluctuations? I construct a sentiment index by measuring the net amount of positive expressions in the corpus of Economic news articles produced by Reuters over the period 1987 2013 and across 12 countries. The index successfully tracks fluctuations in Gross Domestic Product (GDP) at ...

this article is part of a much broader study of persuasive techniques in television news in iran. as a very important part of irib news irinn has been chosen for this study. if we assume that one of the most influential television news, the power of persuasion to influence the audience is very important. it seemed that choosing the highest hypothetical level of news and deconstructing it would ...