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Singapore Management University

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Articles 571 - 600 of 826

Full-Text Articles in Communication

Finding The Optimal Social Trust Path For The Selection Of Trustworthy Service Providers In Complex Social Networks, Guanfeng Liu, Yan Wang, Mehmet A. Orgun, Ee Peng Lim Apr 2013

Finding The Optimal Social Trust Path For The Selection Of Trustworthy Service Providers In Complex Social Networks, Guanfeng Liu, Yan Wang, Mehmet A. Orgun, Ee Peng Lim

Research Collection School Of Computing and Information Systems

Online social networks have provided the infrastructure for a number of emerging applications in recent years, e.g., for the recommendation of service providers or the recommendation of files as services. In these applications, trust is one of the most important factors in decision making by a service consumer, requiring the evaluation of the trustworthiness of a service provider along the social trust paths from a service consumer to the service provider. However, there are usually many social trust paths between two participants who are unknown to one another. In addition, some social information, such as social relationships between participants and …

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Breaking Through The Noise, Singapore Management University Mar 2013

Breaking Through The Noise, Singapore Management University

Perspectives@SMU

Today’s smartphone companies operate in a crowded and competitive environment. What can brands do to stand out?

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From Hearts And Roses To Gore And Ghouls: Student Engagement At Li Ka Shing Library, Priyanka Sharma, Joseph Kennedy Mar 2013

From Hearts And Roses To Gore And Ghouls: Student Engagement At Li Ka Shing Library, Priyanka Sharma, Joseph Kennedy

Research Collection Library

The Li Ka Shing Library at Singapore Management University, SMU, employs various techniques for student engagement. SMU students are required to attend a compulsory orientation session at the library. A large number of SMU freshmen then attend an intensive library training session as a part of their Academic Writing course. Students also get to know us within the classroom environment – where librarians go to conduct ‘in class’ library training sessions focused on the very specific information and research needs of individual courses. This interaction – even though it is formal and regulated – sets the tone for the more …

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Structures Of Broken Ties: Exploring Unfollow Behavior On Twitter, Bo Xu, Yun Huang, Haewoon Kwak Feb 2013

Structures Of Broken Ties: Exploring Unfollow Behavior On Twitter, Bo Xu, Yun Huang, Haewoon Kwak

Research Collection School Of Computing and Information Systems

This study investigates unfollow behavior in Twitter, i.e. people removing others from their Twitter following lists. Considering the interdependency and dynamics of unfollow decisions, we use actor-oriented modeling (SIENA) to examine the impacts of reciprocity, status, embeddedness, homophily, and informativeness on tie dissolution. Focusing on ordinary users in tightly-knitted user groups, the results show that relational properties play key roles in the emergence of unfollow behavior: mutual following relations and common followees reduce the likelihood of unfollowing. And unfollow tends to be reciprocal: when a user is unfollowed by someone, he or she will unfollow back. However, there is no …

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For Wp, The Challenge Of Great Expectations, Tan K. B. Eugene Feb 2013

For Wp, The Challenge Of Great Expectations, Tan K. B. Eugene

Research Collection Yong Pung How School Of Law

SMU Assistant Professor of Law Eugene Tan commented on the Workers’ Party’s (WP) rapidly rising political stock and analysed its future. In many ways, the WP has been able to capitalise on the fading lustre of one-party dominance, as well as on a growing demand for a healthy opposition parliamentary presence as an enabler of good governance and to make the Government more responsive. But now, flush with success, the WP has wasted no time in deftly managing growing expectations. Also, WP has to carve out its own brand in politics to win votes in its own right. It needs …

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K-Pop Live: Social Networking & Language Learning Platform, Thomas Chua, Chin Leng Ong, Kian Ming Png, Aloysius Lau, Houston Toh, Feida Zhu, Kyong Jin Shim, Ee-Peng Lim Feb 2013

K-Pop Live: Social Networking & Language Learning Platform, Thomas Chua, Chin Leng Ong, Kian Ming Png, Aloysius Lau, Houston Toh, Feida Zhu, Kyong Jin Shim, Ee-Peng Lim

Research Collection School Of Computing and Information Systems

K-Pop live is a social networking and language learning platform developed by an undergraduate student team from Singapore Management University. K-Pop live aims to combine social media together with gamification to promote Korean culture. It consolidates all relevant Tweets from Twitter as well as videos from YouTube. The platform allows the user to connect with his friends who share similar interests in terms of K-pop artists and music.

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Bridging The Business Cultures Of The East And West, Singapore Management University Jan 2013

Bridging The Business Cultures Of The East And West, Singapore Management University

Perspectives@SMU

As companies in the West look to the East for business opportunities and those in the East looking westwards to expand themselves, it is no longer enough for business executives to be bilingual. Those who want to be in hot demand will have to be "bi-cultural" and understand the differences between Western and Eastern business cultures.

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Living In Digital Asia: Better, Faster, Stronger?, Singapore Management University Jan 2013

Living In Digital Asia: Better, Faster, Stronger?, Singapore Management University

Perspectives@SMU

The rate at which Asia is embracing technology is simply "amazing", according to Olivier Muehlstein, principal consultant at the Boston Consulting Group. “It's astounding how digitally engaged and active people are in this part of the world. Southeast Asia is extremely connected; it's an anomaly,” he said, and cautioned that an important consequence from all of these changes, is that privacy does not exist anymore.

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Fair Cost Sharing Auction Mechanisms In Last Mile Ridesharing, Duc Thien Nguyen Jan 2013

Fair Cost Sharing Auction Mechanisms In Last Mile Ridesharing, Duc Thien Nguyen

Dissertations and Theses Collection (Open Access)

With rapid growth of transportation demands in urban cities, one major challenge is to provide efficient and effective door-to-door service to passengers using the public transportation system. This is commonly known as the Last Mile problem. In this thesis, we consider a dynamic and demand responsive mechanism for Ridesharing on a non-dedicated commercial fleet (such as taxis). This problem is addressed as two sub-problems, the first of which is a special type of vehicle routing problems (VRP). The second sub-problem, which is more challenging, is to allocate the cost (i.e. total fare) fairly among passengers. We propose auction mechanisms where …

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How Does Culture Influence Corporate Risk-Taking?, Kai Li, Dale Griffin, Heng Yue, Longkai Zhao Jan 2013

How Does Culture Influence Corporate Risk-Taking?, Kai Li, Dale Griffin, Heng Yue, Longkai Zhao

Research Collection School Of Accountancy

We investigate the role of national culture in corporate risk-taking. We postulate that culture influencescorporate risk-taking both through its effect on managerial decision-making and through its effect on acountry’s formal institutions. Further, we postulate that the influence of culture is conditioned on theextent of managerial discretion as measured by earnings discretion and firm size. Using firm-level datafrom 35 countries and employing a hierarchical linear modeling approach to isolate the effects of firmleveland country-level variables, we show that individualism has a positive and significant association,whereas uncertainty avoidance and harmony have negative and significant associations, with corporaterisk-taking. Greater earnings discretion strengthens and …

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The Impact Of Smartphone Adoption On Consumers’ Switching Behavior In Broadband And Cable Tv Services, Gwangjae Jung Jan 2013

The Impact Of Smartphone Adoption On Consumers’ Switching Behavior In Broadband And Cable Tv Services, Gwangjae Jung

Research Collection School Of Computing and Information Systems

The emergence of smartphones has brought a technology disruption to the telecom business. Due to the various services offered in association with smartphones, people can surf the web or watch TV. This research is related to telecom services overall, and has the goal of finding the impact of smartphone adoption to consumers’ switching behavior in broadband and cable TV services. This research adopts a quasi-experimental design and investigates the causal effect of smartphone service adoption on broadband and cable TV service choices. The data collection involves five years of consumer service subscriptions in a Singaporean telecommunications company. I tested for …

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Do Household Cable Tv Viewing Patterns Demonstrate Efficiency And Concentration?, Rae Chang, Pulak Ghosh, Gwangjae Jung, Robert J. Kauffman, Peiran Zhang Jan 2013

Do Household Cable Tv Viewing Patterns Demonstrate Efficiency And Concentration?, Rae Chang, Pulak Ghosh, Gwangjae Jung, Robert J. Kauffman, Peiran Zhang

Research Collection School Of Computing and Information Systems

No abstract provided.

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Impact Of Multimedia In Sina Weibo, Xun Zhao Jan 2013

Impact Of Multimedia In Sina Weibo, Xun Zhao

Dissertations and Theses Collection (Open Access)

Multimedia contents such as images and videos are widely used in social network sites nowadays. Sina Weibo, a Chinese microblogging service, is one of the first microblog platforms to incorporate multimedia content sharing features. This thesis provides statistical analysis on how multimedia contents are produced, consumed, and propagated in Sina Weibo. Based on 230 million tweets and 1.8 million user profiles in Sina Weibo, we study the impact of multimedia contents on the popularity of both users and tweets as well as tweet life span. In addition to consider the multimedia impact on popularity, we also compare the user influence …

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The Use Of Public Computing Facilities By Library Patrons: Demography, Motivations, And Barriers, Kurt Demaagd, Han Ei Chew, Guanxiong Huang, M. Laeeq Khan, Akshaya Sreenivasan, Robert Larose Jan 2013

The Use Of Public Computing Facilities By Library Patrons: Demography, Motivations, And Barriers, Kurt Demaagd, Han Ei Chew, Guanxiong Huang, M. Laeeq Khan, Akshaya Sreenivasan, Robert Larose

Research Collection Office of Impact

Public libraries play an important part in the development of a community. Today, they are seen as more than store houses of books; they are also responsible for the dissemination of online, and offline information. Public access computers are becoming increasingly popular as more and more people understand the need for internet access. Using a series of surveys conducted in 12 libraries across the state of Michigan, the current study is a step towards understanding why the computing facilities are widely used, and what are the motivations behind their use. In addition, barriers and other factors that hinder usage are …

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Measuring Differentials In Communication Research: Issues With Multicollinearity In Three Methods, Sonny Rosenthal Jan 2013

Measuring Differentials In Communication Research: Issues With Multicollinearity In Three Methods, Sonny Rosenthal

Research Collection College of Integrative Studies

Models of communication processes sometimes require the computation of the difference between two variables. For example, information insufficiency is the difference between what people know and what they think they need to know about an issue, and it can motivate information seeking and processing. Common methods that compute this differential may bias model estimates as a function of the correlation between the differentiated variables and other variables in the model. This article describes Citation the general form of Cohen and Cohen's (1983) analysis of partial variance for computing differentials and analyzes simulated data to contrast that method with two alternative …

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Four-Cornered Fight A Blessing In Disguise For Wp, Tan K. B. Eugene Jan 2013

Four-Cornered Fight A Blessing In Disguise For Wp, Tan K. B. Eugene

Research Collection Yong Pung How School Of Law

SMU Assistant Professor of Law and NMP Eugene Tan said that much is at stake for the four political parties contesting the Punggol East by-election. Regardless of how the parties seek to characterise the by-election, it will be fought on both local and national issues. Although it is a four-cornered contest, the race will effectively be a two-horse race between the Workers' Party (WP) and the incumbent People's Action Party (PAP). The by-election is also a way station for PAP and WP as they move towards the next General Election, which promises to be the real watershed election. Assistant Prof …

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Four Candidates, Two-Horse Race?, Tan K. B. Eugene Jan 2013

Four Candidates, Two-Horse Race?, Tan K. B. Eugene

Research Collection Yong Pung How School Of Law

SMU Assistant Professor of Law and NMP Eugene Tan said that much is at stake for the four political parties contesting the Punggol East by-election. Regardless of how the parties seek to characterise the by-election, it will be fought on both local and national issues. Although it is a four-cornered contest, the race will effectively be a two-horse race between the Workers' Party (WP) and the incumbent People's Action Party (PAP). The by-election is also a way station for PAP and WP as they move towards the next General Election, which promises to be the real watershed election. Assistant Prof …

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Hypergraph Index: An Index For Context-Aware Nearest Neighbor Query On Social Networks, Yazhe Wang, Baihua Zheng Jan 2013

Hypergraph Index: An Index For Context-Aware Nearest Neighbor Query On Social Networks, Yazhe Wang, Baihua Zheng

Research Collection School Of Computing and Information Systems

Social network has been touted as the No. 2 innovation in a recent IEEE Spectrum Special Report on “Top 11 Technologies of the Decade”, and it has cemented its status as a bona fide Internet phenomenon. With more and more people starting using social networks to share ideas, activities, events, and interests with other members within the network, social networks contain a huge amount of content. However, it might not be easy to navigate social networks to find specific information. In this paper, we define a new type of queries, namely context-aware nearest neighbor (CANN) search over social network to …

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Engagingness And Responsiveness Behavior Models On The Enron Email Network And Its Application To Email Reply Order Prediction, Byung-Won On, Ee Peng Lim, Jing Jiang, Loo Nin Teow Jan 2013

Engagingness And Responsiveness Behavior Models On The Enron Email Network And Its Application To Email Reply Order Prediction, Byung-Won On, Ee Peng Lim, Jing Jiang, Loo Nin Teow

Research Collection School Of Computing and Information Systems

In email networks, user behaviors affect the way emails are sent and replied. While knowing these user behaviors can help to create more intelligent email services, there has not been much research into mining these behaviors. In this paper, we investigate user engagingness and responsiveness as two interaction behaviors that give us useful insights into how users email one another. Engaging users are those who can effectively solicit responses from other users. Responsive users are those who are willing to respond to other users. By modeling such behaviors, we are able to mine them and to identify engaging or responsive …

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Cultural Differences And Switching Of In-Group Sharing Behavior Between An American (Facebook) And A Chinese (Renren) Social Networking Site, Lin Qiu, Han Lin, Angela K. Y. Leung Jan 2013

Cultural Differences And Switching Of In-Group Sharing Behavior Between An American (Facebook) And A Chinese (Renren) Social Networking Site, Lin Qiu, Han Lin, Angela K. Y. Leung

Research Collection School of Social Sciences

Prior research has documented cultural dimensions that broadly characterize between-culture variations in Western and East Asian societies and that bicultural individuals can flexibly change their behaviors in response to different cultural contexts. In this article, we studied cultural differences and behavioral switching in the context of the fast emerging, naturally occurring online social networking, using both self-report measures and content analyses of online activities on two highly popular platforms, Facebook and Renren (the “Facebook of China”). Results showed that while Renren and Facebook are two technically similar platforms, the Renren culture is perceived as more collectivistic than the Facebook culture. …

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Finding Thoughtful Comments From Social Media, Gottipati Swapna, Jing Jiang Dec 2012

Finding Thoughtful Comments From Social Media, Gottipati Swapna, Jing Jiang

Research Collection School Of Computing and Information Systems

Online user comments contain valuable user opinions. Comments vary greatly in quality and detecting high quality comments is a subtask of opinion mining and summarization research. Finding attentive comments that provide some reasoning is highly valuable in understanding the user’s opinion particularly in sociopolitical opinion mining and aids policy makers, social organizations or government sectors in decision making. In this paper we study the problem of detecting thoughtful comments. We empirically study various textual features, discourse relations and relevance features to predict thoughtful comments. We use logistic regression model and test on the datasets related to sociopolitical content. We found …

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Use Of Rss Feeds To Push The Online Content To Users, Dan Ma Dec 2012

Use Of Rss Feeds To Push The Online Content To Users, Dan Ma

Research Collection School Of Computing and Information Systems

Many websites use Really Simple Syndication (RSS) feeds to actively push their online content to users rather than waiting for users to pull the content passively. In this paper, I construct a theoretical game model to study the profitability of an RSS-PUSH delivery mechanism. The model assumes a general profit structure for websites and heterogeneous users. To access valuable online content, users incur a variety of costs. They choose either to visit the website in the conventional way (the PULL model) or, if it is supported by the website, to use RSS (the PUSH model). Interestingly, I show that although …

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A Survey Of Recommender Systems In Twitter, Su Mon Kywe, Ee Peng Lim, Feida Zhu Dec 2012

A Survey Of Recommender Systems In Twitter, Su Mon Kywe, Ee Peng Lim, Feida Zhu

Research Collection School Of Computing and Information Systems

Twitter is a social information network where short messages or tweets are shared among a large number of users through a very simple messaging mechanism. With a population of more than 100M users generating more than 300M tweets each day, Twitter users can be easily overwhelmed by the massive amount of information available and the huge number of people they can interact with. To overcome the above information overload problem, recommender systems can be introduced to help users make the appropriate selection. Researchers have began to study recommendation problems in Twitter but their works usually address individual recommendation tasks. There …

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Extracting And Normalizing Entity-Actions From Users' Comments, Swapna Gottipati, Jing Jiang Dec 2012

Extracting And Normalizing Entity-Actions From Users' Comments, Swapna Gottipati, Jing Jiang

Research Collection School Of Computing and Information Systems

With the growing popularity of opinion-rich resources on the Web, new opportunities and challenges arise and aid people in actively using such information to understand the opinions of others. Opinion mining process currently focuses on extracting the sentiments of the users on products, social, political and economical issues. In many instances, users not only express their sentiments but also contribute their ideas, requests and suggestions through comments. Such comments are useful for domain experts and are referred to as actionable content. Extracting actionable knowledge from online social media has attracted a growing interest from both academia and the industry. We …

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Community-Based Classification Of Noun Phrases In Twitter, Freddy Chong Tat Chua, William W. Cohen, Justin Betterridge, Ee-Peng Lim Dec 2012

Community-Based Classification Of Noun Phrases In Twitter, Freddy Chong Tat Chua, William W. Cohen, Justin Betterridge, Ee-Peng Lim

Research Collection School Of Computing and Information Systems

Many event monitoring systems rely on counting known keywords in streaming text data to detect sudden spikes in frequency. But the dynamic and conversational nature of Twitter makes it hard to select known keywords for monitoring. Here we consider a method of automatically finding noun phrases (NPs) as keywords for event monitoring in Twitter. Finding NPs has two aspects, identifying the boundaries for the subsequence of words which represent the NP, and classifying the NP to a specific broad category such as politics, sports, etc. To classify an NP, we define the feature vector for the NP using not just …

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On Recommending Hashtags In Twitter Networks, Su Mon Kywe, Tuan-Anh Hoang, Ee Peng Lim, Feida Zhu Dec 2012

On Recommending Hashtags In Twitter Networks, Su Mon Kywe, Tuan-Anh Hoang, Ee Peng Lim, Feida Zhu

Research Collection School Of Computing and Information Systems

Twitter network is currently overwhelmed by massive amount of tweets generated by its users. To effectively organize and search tweets, users have to depend on appropriate hashtags inserted into tweets. We begin our research on hashtags by first analyzing a Twitter dataset generated by more than 150,000 Singapore users over a three-month period. Among several interesting findings about hashtag usage by this user community, we have found a consistent and significant use of new hashtags on a daily basis. This suggests that most hashtags have very short life span. We further propose a novel hashtag recommendation method based on collaborative …

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Us Presidential Election 2012 Prediction Using Census Corrected Twitter Model, Junyu Choy, Michelle L. F. Cheong, Nang Laik Ma, Ping Shung Koo Nov 2012

Us Presidential Election 2012 Prediction Using Census Corrected Twitter Model, Junyu Choy, Michelle L. F. Cheong, Nang Laik Ma, Ping Shung Koo

Research Collection School Of Computing and Information Systems

US Presidential Election 2012 has been a very tight race between the two key candidates. Therewere intense battle between the two key candidates. The election reflects the sentiment of theelectorate towards the achievements of the incumbent President Obama. The campaign lastedseveral months and the effects can be felt in the internet and twitter. The presidential debatesinjected new vigor in the challenger's campaign and successfully captured the electorate of severalstates posing a threat to the incumbent's position. Much of the sentiment in the election has beencaptured in the online discussions. In this paper, we will be using the original model described …

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Cognitive And Social Factors Affecting The Use Of Wikipedia And Information Seeking, Siyoung Chung Nov 2012

Cognitive And Social Factors Affecting The Use Of Wikipedia And Information Seeking, Siyoung Chung

Research Collection Lee Kong Chian School Of Business

Wikipedia, the free online encyclopedia, is the preferred choice among resources used by college students to meet their research needs. However, Wikipedia has been criticized for its low information quality, lack of accountability, inconsistency, and vulnerability to vandalism. Despite the warnings and concerns voiced by academia, online learning tools such as Wikipedia will continue their rise as major learning resource in today's classroom. Using a sample of 184 college students, the study proposed theoretical models to test the effects of internal beliefs, motivations, and social influences on Wikipedia use and information-seeking, and further empirically tested those models. The findings of …

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A Probabilistic Graphical Model For Topic And Preference Discovery On Social Media, Lu Liu, Feida Zhu, Lei Zhang, Shiqiang Yang Oct 2012

A Probabilistic Graphical Model For Topic And Preference Discovery On Social Media, Lu Liu, Feida Zhu, Lei Zhang, Shiqiang Yang

Research Collection School Of Computing and Information Systems

Many web applications today thrive on offering services for large-scale multimedia data, e.g., Flickr for photos and YouTube for videos. However, these data, while rich in content, are usually sparse in textual descriptive information. For example, a video clip is often associated with only a few tags. Moreover, the textual descriptions are often overly specific to the video content. Such characteristics make it very challenging to discover topics at a satisfactory granularity on this kind of data. In this paper, we propose a generative probabilistic model named Preference-Topic Model (PTM) to introduce the dimension of user preferences to enhance the …

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Influentials, Novelty, And Social Contagion: The Viral Power Of Average Friends, Close Communities, And Old News, Nicholas Harrigan, Palakorn Achananuparp, Ee Peng Lim Oct 2012

Influentials, Novelty, And Social Contagion: The Viral Power Of Average Friends, Close Communities, And Old News, Nicholas Harrigan, Palakorn Achananuparp, Ee Peng Lim

Research Collection School Of Computing and Information Systems

What is the effect of (1) popular individuals, and (2) community structures on the retransmission of socially contagious behavior? We examine a community of Twitter users over a five month period, operationalizing social contagion as ‘retweeting’, and social structure as the count of subgraphs (small patterns of ties and nodes) between users in the follower/following network. We find that popular individuals act as ‘inefficient hubs’ for social contagion: they have limited attention, are overloaded with inputs, and therefore display limited responsiveness to viral messages. We argue this contradicts the ‘law of the few’ and ‘influentials hypothesis’. We find that community …

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