Evolution of Conversations in the Age of Email Overload

Email is a ubiquitous communications tool in the workplace and plays an important role in social interactions. Previous studies of email were largely based on surveys and limited to relatively small populations of email users within organizations. In this paper, we report results of a large-scale study of more than 2 million users exchanging 16 billion emails over several months. We quantitatively characterize the replying behavior in conversations within pairs of users. In particular, we study the time it takes the user to reply to a received message and the length of the reply sent. We consider a variety of factors that affect the reply time and length, such as the stage of the conversation, user demographics, and use of portable devices. In addition, we study how increasing load affects emailing behavior. We find that as users receive more email messages in a day, they reply to a smaller fraction of them, using shorter replies. However, their responsiveness remains intact, and they may even reply to emails faster. Finally, we predict the time to reply, length of reply, and whether the reply ends a conversation. We demonstrate considerable improvement over the baseline in all three prediction tasks, showing the significant role that the factors that we uncover play, in determining replying behavior. We rank these factors based on their predictive power. Our findings have important implications for understanding human behavior and designing better email management applications for tasks like ranking unread emails.Comment: 11 page, 24th International World Wide Web Conferenc

The Use of Twitter by Luxury and Midscale Hotels

Twitter has demanded a presence in company brands since its start up in 2008, including the hotel industry. As an up and coming marketing tool, the social media website is still new to both hotels and their guests. Observing the different strategies incorporated by luxury and midscale hotels, the paper provides explanations on how these two segments differ in utilizing Twitter. Through direct interviews with US luxury and midscale hotels and analyzing individual Twitter feeds, it was found that luxury hotels and their target market are much more active on Twitter than the midscale hotel segment. Implications suggest that although there is no current expectation from midscale hotel travelers to follow a Twitter feed, the rising presence of Twitter will demand midscale hotels to actively participate on the social media site in the near future

Warranty Data Analysis: A Review

Warranty claims and supplementary data contain useful information about product quality and reliability. Analysing such data can therefore be of benefit to manufacturers in identifying early warnings of abnormalities in their products, providing useful information about failure modes to aid design modification, estimating product reliability for deciding on warranty policy and forecasting future warranty claims needed for preparing fiscal plans. In the last two decades, considerable research has been conducted in warranty data analysis (WDA) from several different perspectives. This article attempts to summarise and review the research and developments in WDA with emphasis on models, methods and applications. It concludes with a brief discussion on current practices and possible future trends in WDA

Money illusion and coordination failure

Economists long considered money illusion to be largely irrelevant. Here we show, however, that money illusion has powerful effects on equilibrium selection. If we represent payoffs in nominal terms, choices converge to the Pareto inefficient equilibrium; however, if we lift the veil of money by representing payoffs in real terms, the Pareto efficient equilibrium is selected. We also show that strategic uncertainty about the other players' behavior is key for the equilibrium selection effects of money illusion: even though money illusion vanishes over time if subjects are given learning opportunities in the context of an individual optimization problem, powerful and persistent effects of money illusion are found when strategic uncertainty prevails.Money illusion, coordination failure, equilibrium selection, multiple equilibria, coordination games

Exploring the Role of Email, Blackboard, and Facebook in Student-Instructor Interactions Outside of Class: A Mixed Methods Study

This dissertation was a mixed methods triangulation design combining quantitative and qualitative components. The purpose of this study was twofold. First, it examined the association between the frequency and quality of students’ online interactions with instructors and the quality of student-instructor relationship. Second, this study explored the meanings of student-instructor interactions mediated by online tools. Quantitative data were collected via an online survey from 320 undergraduate students enrolled at a public research university. Qualitative data sources were in-depth interviews with six undergraduate students and six professors, observations of student-instructor interactions on Facebook, and artifacts of student-instructor interaction via email. Hierarchical regression analysis showed that approximately one third of the variance in student-instructor connectedness was explained by the frequency of and satisfaction with face-to-face, email, Blackboard, and Facebook; the grade obtained in the class; and demographic variables. Significant predictors of connectedness were grade, frequency of face-to-face student interest-driven communication, satisfaction with the face-to-face interactions, and satisfaction with the email communication. The qualitative findings revealed that instructors held expectations of formal communication for email interactions, while students had expectations for response from instructors within one-two business days. The email practices identified for instructors included responding to student email within two days; compensating for limited face-to-face time; engaging students in communication about the class content; and dealing with student disengagement. Students adopted two main practices related to email: avoiding “emergency” emails to contact instructors, and using email to avoid face-to-face contact in some situations. For Facebook interactions, instructors expected that students initiate connections, while students expected that instructors signal their availability for connection with students. Instructors’ Facebook practices pointed out different approaches for accepting student friend requests; and performing interactions. Students’ practices on Facebook highlighted two patterns: initiating connections with instructors during the semester versus at the beginning of the semester. In addition, preserving connections beyond the boundaries of a class was a practice common to students and instructors

Are the Treasures of Game Theory Ambiguous?

Goeree & Holt (2001) observe that, for some parameter values, Nash equilibrium provides good predictions for actual behaviour in experiments. For other payoff parameters, however, actual behaviour deviates consistently from that predicted by Nash equilibria. They attribute the robust deviations from Nash equilibrium to actual players’ considering not only marginal gains and losses but also total pay-offs. In this paper, we show that optimistic and pessimistic attitudes towards strategic ambiguity may induce such behaviour.