Using cocitation information to estimate political orientation in web documents

This paper introduces a simple method for estimating cultural orientation, the affiliation of online entities in a polarized field of discourse. In particular, cocitation information is used to estimate the political orientation of hypertext documents. A type of cultural orientation, the political orientation of a document is the degree to which it participates in traditionally left- or right-wing beliefs. Estimating documents' political orientation is of interest for personalized information retrieval and recommender systems. In its application to politics, the method uses a simple probabilistic model to estimate the strength of association between a document and left- and right-wing communities. The model estimates the likelihood of cocitation between a document of interest and a small number of documents of known orientation. The model is tested on three sets of data, 695 partisan web documents, 162 political weblogs, and 198 nonpartisan documents. Accuracy above 90% is obtained from the cocitation model, outperforming lexically based classifiers at statistically significant levels.     

The use of computer-mediated interaction in exploring affective influences on strategic interpersonal behaviours

What role can computers play in the study of strategic interpersonal behaviours, and research on affective influences on social behaviour in particular? Despite intense recent interest in affective phenomena, the role of affect in social interaction has rarely been studied. This paper reviews past work on affective influences on interpersonal behaviour, with special emphasis on Michael Argyle’s pioneering studies in this field. We then discuss historical and contemporary theories of affective influences on social behaviour. A series of experiments using computer-mediated interaction tasks are described, investigating affective influences on interpersonal behaviours such as self-disclosure strategies and the production of persuasive arguments. It is suggested that computer-mediated interaction offers a reliable and valid technique for studying the cognitive, information processing variables that facilitate or inhibit affective influences on interpersonal behaviour. These studies show that mild affective states produce significant differences in the way people perform in interpersonal situations, and can accentuate or attenuate (through affective priming) self-disclosure intimacy or persuasive argument quality. The implications of these studies for recent theories and affect-cognition models, and for our understanding of people’s everyday interpersonal strategies are discussed.     

学科交叉视角下的情感识别研究进展

人机交互环境下的情感识别是一个涉及心理学、计算机科学等的多学科交叉领域。试图从多学科交叉的角度介绍情感识别所需的心理学理论基础,从而为工程技术人员提供一定的理论背景。之后,根据待处理原始数据的不同,简介了构建此类系统现有的方法和技术;最后简述了当前研究工作的不足和进一步发展的方向,并对全文进行了小结。     

Embracing diversity in user needs for affective design

To develop product portfolios and affective design we need to understand the diversity in user needs. The challenge is how to predict what users want and how they will behave. One approach is to understand user emotions and affective needs, and predict successful product design that can match the needs. This paper discusses affect and its link to cognition. To provide a context, several theories are presented. A framework is described that incorporates characteristics of users, tasks, products, and use environment. The goal is to highlight the importance of emotions in enhancing the value of products. This research field, which we call Hedonomics, is new. There are many challenges in developing valid and reliable measurements of affect, which can influence human factors research as well as design.     

Why do women write personal blogs? Satisfying needs for self-disclosure and affiliation tell part of the story

Hierarchical OLS regression of survey results from a random sample of 312 women bloggers reveals a statistically significant positive relationship between need for self-disclosure and seeing blogging as a way to express one’s own voice, mediated by need for affiliation and time spent blogging. In essence, women with a strong need to self-disclose information about themselves are more likely than other women to say they blog to express their own voice in the blogosphere, compared with blogging to connect with other people or to gain influence in the blogosphere. In contrast, for women who blog to connect with other people or gain influence in the blogosphere, the strongest predictors is time spent blogging, not needs that motivated them to blog. Results are discussed in relation to need theory.     

Does negative campaign advertising stimulate uncivil communication on social media? Measuring audience response using big data

Using the 2012 presidential election as a case study, this work set out to understand the relationship between negative political advertising and political incivility on Twitter. Drawing on the stimulation hypothesis and the notion that communication with dissimilar others can encourage incivility, it was predicted that (1) heightened levels of negative campaign advertising would be associated with increased citizen activity on Twitter, (2) increased citizen activity would predict online incivility, and (3) that increases in citizen activity would facilitate a positive indirect relationship between negative advertising volume and citizen incivility. This theoretical model was tested using data collected from over 140,000 individual Twitter users located in 206 Designated Market Areas. The results supported the proposed model. Additional analyses further suggested that the relationship between negative political advertising and citizen incivility was conditioned by contextual levels of economic status. These results are discussed in the context of political advertising and democratic deliberation.     

Creativity of student information system projects: From the perspective of network embeddedness

Many companies have pursued innovation to obtain a competitive edge. Thus, educational reform focuses mainly on training creative students. This study adopted the concept of an affiliated network of projects to investigate how project embeddedness influences project team creativity. This work surveys 60 projects in a Management Information Systems Department of a University. Validity of the specific study hypotheses is tested by using moderate hierarchical regression analysis to determine how project embeddedness affects project team creativity and assess how the team innovation climate moderates the relationships between project embeddedness and project team creativity. Analytical results indicate a positive association between structural embeddedness and project team creativity, a negative relationship between positional embeddedness and project team creativity, and a positive influence of team innovation climate on the relationships between network embeddedness and project team creativity. An attempt is also made to understand the role of positional embeddedness by classifying the interactions based on the content of interactions. According to those results, positional embeddedness is positively related to project team creativity during problem–identification interaction; during solution–design interaction, positional embeddedness is negatively related to project team creativity. Results of this study explain the phenomena of divergent thinking and convergent thinking during creative development.     

Effective affective user interface design in games

It is proposed that games, which are designed to generate positive affect, are most successful when they facilitate flow (Csikszentmihalyi 1992). Flow is a state of concentration, deep enjoyment, and total absorption in an activity. The study of games, and a resulting understanding of flow in games can inform the design of non-leisure software for positive affect. The paper considers the ways in which computer games contravene Nielsen's guidelines for heuristic evaluation (Nielsen and Molich 1990) and how these contraventions impact on flow. The paper also explores the implications for research that stem from the differences between games played on a personal computer and games played on a dedicated console. This research takes important initial steps towards defining how flow in computer games can inform affective design.     

Liking Obama and Romney (on Facebook): An experimental evaluation of political engagement and efficacy during the 2012 general election

Existing research on the effect of social media use on political behavior has yielded mixed results to date, demonstrating the importance of research examining the effects of varying types of social media communication on political behavior. The experiment reported in this study provides valuable insights into the role of social media in elections. A longitudinal experiment was conducted to assess the effect Facebook use in the 2012 Presidential election had on political information efficacy, external efficacy, and political engagement. Results suggested that while political information efficacy and engagement increased over time, it was not related to following candidates on Facebook.     

SVM结合模糊方法在遥感图像分类中的应用

提出一种支持向量机(SVM)结合模糊方法的遥感图像分类算法。首先介绍了SVM基本算法及其在遥感图像分类中应用情况,然后针对SVM多类判别存在混分和漏分的缺陷,对混分和漏分样本采用模糊方法判决分类。实验证明该方法的分类精度优于单一的SVM方法、模糊方法或神经网络方法。     

Facebook and political engagement: A study of online political group membership and offline political engagement

In what ways do online groups help to foster political engagement among citizens? We employ a multi-method design incorporating content analysis of online political group pages and original survey research of university undergraduates (n = 455) to assess the relationship between online political group membership and political engagement—measured through political knowledge and political participation surrounding the 2008 election. We find that participation in online political groups is strongly correlated with offline political participation, as a potential function of engaging members online. However, we fail to confirm that there is a corresponding positive relationship between participation in online political groups and political knowledge, likely due to low quality online group discussion.     

Proposing the Affect-Trust Infusion Model (ATIM) to explain and predict the influence of high and low affect infusion on Web vendor trust

We adapt the Affect Infusion Model and propose the Affect-Trust Infusion Model (ATIM), which explains and predicts how and when cognition, through perceived Web site performance (PWP), and positive emotion (PE) each influence Web vendor trust. The ATIM explains the underlying causal mechanisms that determine the degree of affect infusion and the subsequent processing strategy that a user adopts when interacting with a new Web site. Under high affect infusion, PE acts as a mediator between PWP and vendor trust; under low affect infusion, PWP primarily affects trust, and PE is disintermediated. We review two distinct, rigorously validated experiments that empirically support the ATIM. To conclude, we detail several promising research opportunities that can leverage the ATIM and show how the ATIM can help to guide user-centered design (UCD) as an example practical application.     

Does Twitter motivate involvement in politics? Tweeting,opinion leadership,and political engagement

This paper, in order to deepen our understanding of the role of opinion leadership on Twitter, the world’s largest microblogging service, has investigated the interrelationships between opinion leadership, Twitter use motivations, and political engagement. It finds that Twitter opinion leaders have higher motivations of information seeking, mobilization, and public expression than nonleaders. It has also been found that mobilization and public-expression motivations mediate the association between perceived opinion leadership and Twitter use frequency. Most importantly, this study finds that Twitter opinion leadership makes a significant contribution to individuals’ involvement in political processes, while Twitter use itself or media use motivation does not necessarily help individuals’ political engagement.