n July 1951, news spread that certain manufacturers of homeopathic remedies in the Stockholm area had skipped part of the potentization process and had sold pure sugar pills under the false claim that they were homeopathic medicines. After extraordinarily timeand money-consuming investigations and legal proceedings, directors and others from Pharma-Drog AB and Drogon AB who were responsible for...

COVER With her mother looking on, a woman in Hlabisa, South Africa, receives an HIV test as part of a survey by the Africa Centre for Health and Population Studies. In this issue, two Reports (pages 961 and 966) show that treating HIV-infected people reduces the risk of virus spread and increases life expectancy. A special News section (page 898) describes South Africa’s fi ght against the co-e...

Social media collect and spread on the Web personal opinions, facts, fake news and all kind of information users may be interested in. Applying argument mining methods to such heterogeneous data sources is a challenging open research issue, in particular considering the peculiarities of the language used to write textual messages on social media. In addition, new issues emerge when dealing with...

We describe a system that tracks the spread of epidemics by automatically extracting content from the Web. The system continuously monitors a large set of news sources, extracts information from new articles, and accumulates the extracted facts in a database in real time. The system provides functionality for visualizing results, as well as alerting capability. We present the current state of t...

public diplomacy is an idiom that has been noticed increasingly in last decades due to extension of internet and satellite news networks. this type of diplomacy be used related to influence, guidance and mobilization of public opinion for the aims of governmental and non-governmental agents. in this article, the author tried to give analytical answer to this question: in spite of being newest, ...

Emerging within Systemic Linguistics, Appraisal/Evaluation is a framework for analyzing the language of evaluation, providing techniques for the systematic analysis of evaluation and stance as they operate in whole texts and in groupings of texts. There are three systems in the Appraisal framework: Attitude, Engagement, and Graduation. This study sets out to analyze the use of the system of Eng...

Rumour detection is hard because the most accurate systems operate retrospectively, only recognising rumours once they have collected repeated signals. By then the rumours might have already spread and caused harm. We introduce a new category of features based on novelty, tailored to detect rumours early on. To compensate for the absence of repeated signals, we make use of news wire as an addit...

Social media users have finite attention which limits the number of incoming messages from friends they can process. Moreover, they pay more attention to opinions and recommendations of some friends more than others. In this paper, we propose LA-LDA, a latent topic model which incorporates limited, non-uniformly divided attention in the diffusion process by which opinions and information spread...