Twitter has emerged as a major social media platform and generated great interest from
sentiment analysis researchers. Despite this attention, state-of-the-art Twitter sentiment …

Abstract As Big Data has undergone a transition from being an emerging topic to a growing
research area, it has become necessary to classify the different types of research and …

Prior studies indicated that actively using social network sites (SNSs) is positively associated
with well-being by enhancing social support and feelings of connectedness. Conversely …

This essay explores the changing character of public discourse in the Age of Twitter.
Adopting the perspective of media ecology, the essay highlights how Twitter privileges …

The main aim of this study was to examine the norms of expressing emotions on social
media. Specifically, the perceived appropriateness (ie injunctive norms) of expressing six …

This article draws on information economics to examine when signals and endorsements
obtained from multiple information sources enhance or diminish one another's effects. We …

With the advent of Web 2.0, people became more eager to express and share their opinions
on web regarding day-to-day activities and global issues as well. Evolution of social media …

The use of “Big Data” in policy and decision making is a current topic of debate. The 2013
murder of Drummer Lee Rigby in Woolwich, London, UK led to an extensive public reaction …

We describe a state-of-the-art sentiment analysis system that detects (a) the sentiment of
short informal textual messages such as tweets and SMS (message-level task) and (b) the …

Sentiment analysis is the task of automatically determining from text the attitude, emotion, or
some other affectual state of the author. This chapter summarizes the diverse landscape of …