This paper demonstrates a new method for leveraging free-text annotations to infer semantic properties of documents. Free-text annotations are becoming increasingly abundant, due to the recent dramatic growth in semistructured, user-generated online content. An example of such content is product reviews, which are often annotated by their authors with pros/cons keyphrases such as “a real bargai...

In the last decade, the burst of the Web 2.0 has rapidly increased the amount of user generated content (UGC) on the Internet. Most of Web 2.0 applications allow users to interact with other users and edit website content. This collaborative edition is supposed to improve the content. Nowadays, the amount of people generating online content has dramatically increased. For instance, in the U.S.,...

The rising influence of user-generated online reviews (Cone, 2011) has led to growing incentive for businesses to solicit and manufacture DECEPTIVE OPINION SPAM—fictitious reviews that have been deliberately written to sound authentic and deceive the reader. Recently, Ott et al. (2011) have introduced an opinion spam dataset containing gold standard deceptive positive hotel reviews. However, th...

Monetizing their users’ personal information instead of charging a fee has become an established revenue model for platform operators—a new form of media companies specialized in aggregating, managing, and distributing user-generated online content. However, the commodification of privacy leads to privacy concerns that might be a risk for such businesses. Thus, a new approach is to focus on con...

content creators: Some social and legal implications Abstract Consumers are increasingly turning to the online environment to provide information to assist them in making purchase decisions related to travel products. They often rely on travel recommendations from different sources, such as sellers, independent experts and, increasingly, other consumers. A new type of online content, user-gener...

Our research focuses on the fast-changing landscape of contemporary social media where user-generated content is increasingly being used to evaluate a wide range of products and services. The move to online valuations is raising important questions about how valuations change when they are produced online by consumers, and what outcomes they generate for the organizations being evaluated. To ad...

This study examined the perceived credibility of user-generated (i.e. Wikipedia) versus more expertly provided online encyclopedic information (i.e. Citizendium, and the online version of the Encyclopædia Britannica) across generations. Two large-scale surveys with embedded quasi-experiments were conducted: among 11–18-year-olds living at home and among adults 18 years and older. Results showed...

Social media has been increasingly used to manage emergencies (hot management), yet it is still unclear to which extent its use is truly beneficial to manage calm situations (cold management). Take socioeconomic deprivation of cities. Measuring it in an accurate and timely fashion has become a priority for governments around the world. Traditionally, deprivation indexes have been derived from c...

Concept extraction is a primary subtask of ontology construction. It is difficult to extract new concepts from traditional text corpus. Moreover, building a single ontology for multiple-topic corpus may lead to misconception. To deal with these problems, this paper proposes a novel framework to extract topical key concepts from folksonomy. Folksonomy is a valuable data source due to real-time u...

This explorational study seeks to elucidate the question of what motivates weblogger and videoblogger to produce user generated content. Particular focus was laid on the question whether motivational differences can be discerned between webloggers and video producers and why people do not produce content. The findings show that it is the intrinsic motivations that are responsible for today’s us...