Event extraction using behaviors of sentiment signals and burst structure in social media

Significant world events often cause the behavioral convergence of the expression of shared sentiment. This paper examines the use of the blogosphere as a framework to study user psychological behaviors, using their sentiment responses as a form of ‘sensor’ to infer real-world events of importance automatically. We formulate a novel temporal sentiment index function using quantitative measure of the valence value of bearing words in blog posts in which the set of affective bearing words is inspired from psychological research in emotion structure. The annual local minimum and maximum of the proposed sentiment signal function are utilized to extract significant events of the year and corresponding blog posts are further analyzed using topic modeling tools to understand their content. The paper then examines the correlation of topics discovered in relation to world news events reported by the mainstream news service provider, Cable News Network, and by using the Google search engine. Next, aiming at understanding sentiment at a finer granularity over time, we propose a stochastic burst detection model, extended from the work of Kleinberg, to work incrementally with stream data. The proposed model is then used to extract sentimental bursts occurring within a specific mood label (for example, a burst of observing ‘shocked’). The blog posts at those time indices are analyzed to extract topics, and these are compared to real-world news events. Our comprehensive set of experiments conducted on a large-scale set of 12 million posts from Livejournal shows that the proposed sentiment index function coincides well with significant world events while bursts in sentiment allow us to locate finer-grain external world events.

Life quality and wealth : a qualitative and quantitative comparison of affluent and poor people

It is well-documented that auent people, on average, have higher subjective wellbeing (SWB) than do poor people. is phenomenon has been explained using SWB homeostasis theory. However, a more precise understanding of the dierences in personal experience that lead to homeostatic failure remains to be documented. We sought such understanding through qualitative interviews and a quantitative examination of SWB domains. Twenty auent people and 20 people dependent on social welfare completed an interview and the Personal Wellbeing Index. As expected, the two groups diered signicantly in SWB. Moreover, the poor group reported a preponderance of negative life experiences while the auent group concentrated on the positive events in their lives. Most telling was the nding that both the qualitative and quantitative methods identied the area of ‘relationships’ as representing the greatest degree of divergence between the two groups. is life domain is especially relevant in the maintenance of normative levels of SWB.

Development and validation of a new measure of everyday adolescent functioning : the multidimensional adolescent functioning scale implications and contribution

Everyday functioning is an important outcome for studies of the developmental psychopathology of adolescence. An unbiased, well-validated, and easy-to-use instrument to specifically assess normal adolescent functioning is not yet available. The current study aimed to introduce and validate the Multidimensional Adolescent Functioning Scale