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Singapore Management University

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Articles 91 - 120 of 139

Full-Text Articles in Communication Technology and New Media

Public Broadband Investment Priorities In The United States: An Analysis Of The Broadband Technology Opportunities Program, Robert Larose, Johannes M. Bauer, Kurt Demaagd, Han Ei Chew, Wenjuan Ma, Yumi Jung Jan 2014

Public Broadband Investment Priorities In The United States: An Analysis Of The Broadband Technology Opportunities Program, Robert Larose, Johannes M. Bauer, Kurt Demaagd, Han Ei Chew, Wenjuan Ma, Yumi Jung

Research Collection Office of Impact

In 2009, U.S. Congress approved $7.2. billion to accelerate the deployment of advanced broadband networks and services to unserved and underserved regions of the country. Although primarily a short-term response to the economic crisis, the appropriation also indicates a willingness to seek a new balance between private sector and public sector initiatives in the development of the nation's broadband infrastructure. This paper is a first step in assessing the potential impact of the new government initiatives. It discusses in detail one component of the overall program, the Broadband Technology Opportunities Program (BTOP). The rationales and objectives of BTOP and its …


Two Formulas For Success In Social Media: Social Learning And Network Effects, Liangfei Qiu, Qian Tang, Andrew B. Whinston Dec 2013

Two Formulas For Success In Social Media: Social Learning And Network Effects, Liangfei Qiu, Qian Tang, Andrew B. Whinston

Research Collection School Of Computing and Information Systems

This paper examines social learning and network effects that are particularly important for online videos, considering the limited marketing campaigns of user-generated content. Rather than combining both social learning and network effects under the umbrella of social contagion or peer influence, we develop a theoretical model and empirically identify social learning and network effects separately. Using a unique data set from YouTube, we find that both mechanisms have statistically and economically significant effects on video views, and which mechanism dominates depends on the specific video type.


When There's A Will, There Might Be A Way: The Economic Impact Of Mobile Phones And Entrepreneurial Motivation On Female-Owned Microenterprises, Han Ei Chew, Vigneswara P. Ilavarasan, Mark Levy Dec 2013

When There's A Will, There Might Be A Way: The Economic Impact Of Mobile Phones And Entrepreneurial Motivation On Female-Owned Microenterprises, Han Ei Chew, Vigneswara P. Ilavarasan, Mark Levy

Research Collection Office of Impact

Based on a survey of 598 urban microentrepreneurs in Chennai, India, we contend that access to mobile phones is a necessary but not sufficient condition for achieving certain development goals. We explicate an innovative concept, entrepreneurial expectations, and explore its linkage with mobile phones and microenterprise growth. We found that among high-expectation microentrepreneurs (14 percent of the sample) business use of mobile phones amplified the impact of entrepreneurial expectations and was associated with greater microenterprise growth.


Predicting Best Answerers For New Questions: An Approach Leveraging Topic Modeling And Collaborative Voting, Yuan Tian, Pavneet Singh Kochhar, Ee Peng Lim, Feida Zhu, David Lo Nov 2013

Predicting Best Answerers For New Questions: An Approach Leveraging Topic Modeling And Collaborative Voting, Yuan Tian, Pavneet Singh Kochhar, Ee Peng Lim, Feida Zhu, David Lo

Research Collection School Of Computing and Information Systems

Community Question Answering (CQA) sites are becoming increasingly important source of information where users can share knowledge on various topics. Although these platforms bring new opportunities for users to seek help or provide solutions, they also pose many challenges with the ever growing size of the community. The sheer number of questions posted everyday motivates the problem of routing questions to the appropriate users who can answer them. In this paper, we propose an approach to predict the best answerer for a new question on CQA site. Our approach considers both user interest and user expertise relevant to the topics …


Twicube: A Real-Time Twitter Online Community Analysis Tool, Juan Du, Wei Xie, Cheng Li, Feida Zhu, Ee Peng Lim Apr 2013

Twicube: A Real-Time Twitter Online Community Analysis Tool, Juan Du, Wei Xie, Cheng Li, Feida Zhu, Ee Peng Lim

Research Collection School Of Computing and Information Systems

As a micro-blogging service, Twitter differs from other social network services in two ways: 1) the absence of mutual consent in establishing follow links and 2) being a mixture of news media and social network. A key question to ask in better understanding Twitter user behavior is which part of a user’s Twitter network reflects one’s real-life social network. TwiCube is an online tool that employs a novel algorithm capable of identifying a user’s real-life social community, which we call the user’s off-line community, purely from examining the link structure among the user’s followers and followees. Based on the identified …


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.


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 …


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 …


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 …


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 …


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 …


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 …


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 …


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 …


Content Contribution For Revenue Sharing And Reputation: A Dynamic Structural Model, Qian Tang, Bin Gu, Andrew B. Whinston Oct 2012

Content Contribution For Revenue Sharing And Reputation: A Dynamic Structural Model, Qian Tang, Bin Gu, Andrew B. Whinston

Research Collection School Of Computing and Information Systems

This study examines the incentives for content contribution in social media. We propose that exposure and reputation are the major incentives for contributors. Besides, as more and more social media Web sites offer advertising-revenue sharing with some of their contributors, shared revenue provides an extra incentive for contributors who have joined revenue-sharing programs. We develop a dynamic structural model to identify a contributor's underlying utility function from observed contribution behavior. We recognize the dynamic nature of the content-contribution decision-that contributors are forward-looking, anticipating how their decisions affect future rewards. Using data collected from YouTube, we show that content contribution is …


Observatory Of Trends In Software Related Microblogs, Achananuparp Palakorn, Nelman Lubis Ibrahim, Yuan Tian, David Lo, Ee Peng Lim Sep 2012

Observatory Of Trends In Software Related Microblogs, Achananuparp Palakorn, Nelman Lubis Ibrahim, Yuan Tian, David Lo, Ee Peng Lim

Research Collection School Of Computing and Information Systems

Microblogging has recently become a popular means to disseminate information among millions of people. Interestingly, software developers also use microblog to communicate with one another. Different from traditional media, microblog users tend to focus on recency and informality of content. Many tweet contents are relatively more personal and Opinionated, compared to that of traditional news report. Thus, by analyzing microblogs, one could get the up-to-date information about what people are interested in or feel toward a particular topic. In this paper, we describe our microblog observatory that aggregates more than 70,000 Twitter feeds, captures software-related tweets, and computes trends from …


Automatic Classification Of Software Related Microblogs, Philips Kokoh Prasetyo, David Lo, Achananuparp Palakorn, Yuan Tian, Ee Peng Lim Sep 2012

Automatic Classification Of Software Related Microblogs, Philips Kokoh Prasetyo, David Lo, Achananuparp Palakorn, Yuan Tian, Ee Peng Lim

Research Collection School Of Computing and Information Systems

Millions of people, including those in the software engineering communities have turned to microblogging services, such as Twitter, as a means to quickly disseminate information. A number of past studies by Treude et al., Storey, and Yuan et al. have shown that a wealth of interesting information is stored in these microblogs. However, microblogs also contain a large amount of noisy content that are less relevant to software developers in engineering software systems. In this work, we perform a preliminary study to investigate the feasibility of automatic classification of microblogs into two categories: relevant and irrelevant to engineering software systems. …


Negotiating Crisis In The New Media Environment: Evolution Of Crises Online, Gaining Legitimacy Offline, Augustine Pang, Nasrath Begam Binte Abul Hassan, Aaron Chee Yang Chong Jun 2012

Negotiating Crisis In The New Media Environment: Evolution Of Crises Online, Gaining Legitimacy Offline, Augustine Pang, Nasrath Begam Binte Abul Hassan, Aaron Chee Yang Chong

Research Collection Lee Kong Chian School Of Business

This study examines how crises originate online, how different new media platforms escalate crises, and how issues become legitimized offline when they transit onto mainstream media. We study five social media crises, which includes United breaks guitars and Southwest Air’s too fat to fly. Crises are triggered online when stakeholders are empowered by new media platforms that allow user-generated content to be posted online without any filtering. Facebook, YouTube and Twitter emerge as top crises breeding grounds due to their large user base and the lack of gatekeeping. Facebook and blogs are responsible for escalating crises beyond the immediate stakeholder …


What Does Software Engineering Community Microblog About?, Yuan Tian, Palakorn Achananuparp, Ibrahim Nelman Lubis, David Lo, Ee Peng Lim Jun 2012

What Does Software Engineering Community Microblog About?, Yuan Tian, Palakorn Achananuparp, Ibrahim Nelman Lubis, David Lo, Ee Peng Lim

Research Collection School Of Computing and Information Systems

Microblogging is a new trend to communicate and to disseminate information. One microblog post could potentially reach millions of users. Millions of microblogs are generated on a daily basis on popular sites such as Twitter. The popularity of microblogging among programmers, software engineers, and software users has also led to their use of microblogs to communicate software engineering issues apart from using emails and other traditional communication channels.Understanding how millions of users use microblogs in software engineering related activities would shed light on ways we could leverage the fast evolving microblogging content to aid software development efforts. In this work, …


Twitter: High On Celebrity Gossip, Low On News Discussion, Singapore Management University May 2012

Twitter: High On Celebrity Gossip, Low On News Discussion, Singapore Management University

Perspectives@SMU

Twitter is regarded as a highly popular platform for online communications. It was said to have played a role in facilitating – 140 characters at a time – social movements that supported key events such as the Arab Spring. And because Twitter messages (or 'tweets' as they are called) are compact and quickly transmitted, they are widely used to spread and share breaking news, personal updates and spontaneous ideas.


Small And Medium-Sized Enterprises In Rural Business Clusters: The Relation Between Ict Adoption And Benefits Derived From Cluster Membership, Charles Steinfield, Robert Larose, Han Ei Chew, Stephanie Tom Tong Mar 2012

Small And Medium-Sized Enterprises In Rural Business Clusters: The Relation Between Ict Adoption And Benefits Derived From Cluster Membership, Charles Steinfield, Robert Larose, Han Ei Chew, Stephanie Tom Tong

Research Collection Office of Impact

This study examines the relationships between information and communication technologies (ICT) usage, the benefits a company derives from membership in a rural business cluster, and the success of rural companies. Analysis of 333 rural businesses located in northern lower Michigan showed a strong relationship between (a) ICT adoption and benefits derived from the membership in business clusters, (b) ICT adoption and self-reported business success, and (c) benefits derived from business clusters and business success. Although analysis indicates that these relationships may be industry specific, results suggest that ICT adoption by rural enterprises may have advantages for the region's social capital …


The Central Role Of Information Systems In Managing Crises, Singapore Management University Feb 2012

The Central Role Of Information Systems In Managing Crises, Singapore Management University

Perspectives@SMU

Crisis management research recognises the importance of timely information in coordinating a suitable and rapid crisis response. However, the transmission of information would depend on the information systems assets available, how they work with other resources and how they facilitate coordination – areas that have not received much scholarly attention.


The Ethnocentric Bias: Why One Size Does Not Fit All In The World Of Digital Communication, Michael A. Netzley Feb 2012

The Ethnocentric Bias: Why One Size Does Not Fit All In The World Of Digital Communication, Michael A. Netzley

Research Collection Lee Kong Chian School Of Business

In this chapter Michael Netzley, PhD at Singapore Management University, discusses the opportunity to see beyond traditional markets. Asia is filled with diverse and fragmented markets, more so than we typically find in the West's mature markets. The larger social media conversation reflects values and market assumptions of these mature markets, and all too often the needs of Asia's many emerging markets go unrepresented. Professional communicators must stop relying on advice crafted within different market conditions and instead lead the way forward by producing solid research as the basis for data-driven communication decisions.


Tweets And Votes: A Study Of The 2011 Singapore General Election, Marko M. Skoric, Nathaniel D. Poor, Palakorn Achananuparp, Ee Peng Lim, Jing Jiang Jan 2012

Tweets And Votes: A Study Of The 2011 Singapore General Election, Marko M. Skoric, Nathaniel D. Poor, Palakorn Achananuparp, Ee Peng Lim, Jing Jiang

Research Collection School Of Computing and Information Systems

This study focuses on the uses of Twitter during the elections, examining whether the messages posted online are reflective of the climate of public opinion. Using Twitter data obtained during the official campaign period of the 2011 Singapore General Election, we test the predictive power of tweets in forecasting the election results. In line with some previous studies, we find that during the elections the Twitter sphere represents a rich source of data for gauging public opinion and that the frequency of tweets mentioning names of political parties, political candidates and contested constituencies could be used to make predictions about …


Content Contribution In Social Media: The Case Of Youtube, Qian Tang, Bin Gu, Andrew B. Whinston Jan 2012

Content Contribution In Social Media: The Case Of Youtube, Qian Tang, Bin Gu, Andrew B. Whinston

Research Collection School Of Computing and Information Systems

Social media allows individuals and businesses to contribute contents for public viewing. However, little is known about the underlying incentives that why content providers derive utilities from such activities. In this study, we build a dynamic structural model to recover the utility function for content providers. Our model distinguishes short-term payoffs based on ad revenue sharing from long-term payoffs driven by content providers' reputation. The model was estimated using a panel data of 914 top 1000 video providers on You Tube from Jun 7th, 2010, to Aug 7th, 2011 since top providers are more likely to be encouraged by these …


Mining Diversity On Social Media Networks, Lu Liu, Feida Zhu, Meng Jiang, Jiawei Han, Lifeng Sun, Shiqiang Yang Jan 2012

Mining Diversity On Social Media Networks, Lu Liu, Feida Zhu, Meng Jiang, Jiawei Han, Lifeng Sun, Shiqiang Yang

Research Collection School Of Computing and Information Systems

The fast development of multimedia technology and increasing availability of network bandwidth has given rise to an abundance of network data as a result of all the ever-booming social media and social websites in recent years, e.g., Flickr, Youtube, MySpace, Facebook, etc. Social network analysis has therefore become a critical problem attracting enthusiasm from both academia and industry. However, an important measure that captures a participant’s diversity in the network has been largely neglected in previous studies. Namely, diversity characterizes how diverse a given node connects with its peers. In this paper, we give a comprehensive study of this concept. …


A Latency Effect For Mobile Phone Investments By Micro-Entrepreneurs, Han Ei Chew, Vigneswara P. Ilavarasan, Mark Levy Jan 2012

A Latency Effect For Mobile Phone Investments By Micro-Entrepreneurs, Han Ei Chew, Vigneswara P. Ilavarasan, Mark Levy

Research Collection Office of Impact

As the fastest diffusing ICT in history, the mobile has attracted substantial scholarly interest. However, the historic penetration rate of the mobile phone in the developing world seems discordant with the paucity of evidence linking mobiles to productivity gains in micro-enterprises. In this study, we address the dilemma. We are seeing mobile phones everywhere but in the productivity statistics. We believe that there is a disconnect between mobile phone penetration rates and productivity statistics because businesses take time to learn how to exploit the technology for productivity gains. Findings from our study indicate there is latency between the time of …


Value Relevance Of Blog Visibility, Nan Hu, Ling Liu, Arindam Tripathy, Lee J. Yao Dec 2011

Value Relevance Of Blog Visibility, Nan Hu, Ling Liu, Arindam Tripathy, Lee J. Yao

Research Collection School Of Computing and Information Systems

This study empirically examines the effect of a non-traditional information source, namely a firm's blog visibility on the capital market valuation of firms. After controlling for earnings, book value of equity and other value relevant variables, such as traditional media exposure, R&D spending, and advertising expense, we find a positive association between a firm's blog visibility and its capital market valuation. In addition, we find blog visibility Grange causes trading, not vice versa. Our findings indicate that non-traditional information sources such as blogs help disseminate information and influence consumers' investment decisions by capturing their attention.


Context-Aware Nearest Neighbor Query On Social Networks, Yazhe Wang, Baihua Zheng Oct 2011

Context-Aware Nearest Neighbor Query On Social Networks, Yazhe Wang, Baihua Zheng

Research Collection School Of Computing and Information Systems

Social networking has grown rapidly over the last few years, and social networks contain a huge amount of content. However, it can be not easy to navigate the 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 retrieve the nearest node to the query node that matches the context specified. CANN considers both the structure of the social network, and the profile information of the nodes. We design ahyper-graph based index structure to support approximated CANN search efficiently.


The Use Of Online Social Networking By Rural Youth And Its Effects On Community Attachment, Han Ei Chew, Robert Larose, Charles Steinfield, Alcides Velasquez Aug 2011

The Use Of Online Social Networking By Rural Youth And Its Effects On Community Attachment, Han Ei Chew, Robert Larose, Charles Steinfield, Alcides Velasquez

Research Collection Office of Impact

In recent years, an increasing amount of attention has been placed on improving access to Information and Communication Technology in the United States. With the rapidity at which broadband construction projects are dotting America, it is important to understand the social impacts of these infrastructural projects. One particularly salient issue is whether access to the Internet would decrease the involvement of youth in their home communities since youth and issues of talent retention are crucial to the long-term viability of rural communities. However, findings on this topic have been a mixed bag with some studies suggesting that the use of …