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On Modeling Community Behaviors And Sentiments In Microblogging, Tuan Anh Hoang, William Cohen, Ee Peng Lim Apr 2014

On Modeling Community Behaviors And Sentiments In Microblogging, Tuan Anh Hoang, William Cohen, Ee Peng Lim

Research Collection School Of Computing and Information Systems

In this paper, we propose the CBS topic model, a probabilistic graphical model, to derive the user communities in microblogging networks based on the sentiments they express on their generated content and behaviors they adopt. As a topic model, CBS can uncover hidden topics and derive user topic distribution. In addition, our model associates topic-specific sentiments and behaviors with each user community. Notably, CBS has a general framework that accommodates multiple types of behaviors simultaneously. Our experiments on two Twitter datasets show that the CBS model can effectively mine the representative behaviors and emotional topics for each community. We also …

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Predictive Analytics For Outpatient Appointments, Nang Laik Ma, Khataniar Seemanta, Dan Wu, Serene Seng Ying Ng Apr 2014

Predictive Analytics For Outpatient Appointments, Nang Laik Ma, Khataniar Seemanta, Dan Wu, Serene Seng Ying Ng

Research Collection School Of Computing and Information Systems

Healthcare is a very important industry where analytics has been applied successfully to generate insights about patients, identify bottleneck and to improve the business efficiency. In this paper, we aim to look at the patient appointment process as the hospital is experiencing high volume of ?no shows. ?No shows have a high impact on longer appointment lead time for patients, poor patient satisfaction and loss of revenue for hospital. We use data analytics to identify pattern of ?no shows, develop a statistical model to predict the probability of ?no shows and finally operationalizing the model to embed the analytics solution …

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Machine Learning In Wireless Sensor Networks: Algorithms, Strategies, And Applications, Mohammad Abu Alsheikh, Shaowei Lin, Dusit Niyato, Hwee-Pink Tan Apr 2014

Machine Learning In Wireless Sensor Networks: Algorithms, Strategies, And Applications, Mohammad Abu Alsheikh, Shaowei Lin, Dusit Niyato, Hwee-Pink Tan

Research Collection School Of Computing and Information Systems

Wireless sensor networks (WSNs) monitor dynamic environments that change rapidly over time. This dynamic behavior is either caused by external factors or initiated by the system designers themselves. To adapt to such conditions, sensor networks often adopt machine learning techniques to eliminate the need for unnecessary redesign. Machine learning also inspires many practical solutions that maximize resource utilization and prolong the lifespan of the network. In this paper, we present an extensive literature review over the period 2002-2013 of machine learning methods that were used to address common issues in WSNs. The advantages and disadvantages of each proposed algorithm are …

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On Finding The Point Where There Is No Return: Turning Point Mining On Game Data, Wei Gong, Ee Peng Lim, Feida Zhu, Achananuparp Palakorn, David Lo Apr 2014

On Finding The Point Where There Is No Return: Turning Point Mining On Game Data, Wei Gong, Ee Peng Lim, Feida Zhu, Achananuparp Palakorn, David Lo

Research Collection School Of Computing and Information Systems

Gaming expertise is usually accumulated through playing or watching many game instances, and identifying critical moments in these game instances called turning points. Turning point rules (shorten as TPRs) are game patterns that almost always lead to some irreversible outcomes. In this paper, we formulate the notion of irreversible outcome property which can be combined with pattern mining so as to automatically extract TPRs from any given game datasets. We specifically extend the well-known PrefixSpan sequence mining algorithm by incorporating the irreversible outcome property. To show the usefulness of TPRs, we apply them to Tetris, a popular game. We mine …

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Predicting Romantic Interest And Decisions In The Very Early Stages Of Mate Selection: Standards, Accuracy, And Sex Differences, Garth J. O. Fletcher, Patrick S. G. Kerr, Norman P. Li, Katherine A. Valentine Apr 2014

Predicting Romantic Interest And Decisions In The Very Early Stages Of Mate Selection: Standards, Accuracy, And Sex Differences, Garth J. O. Fletcher, Patrick S. G. Kerr, Norman P. Li, Katherine A. Valentine

Research Collection School of Social Sciences

In the current study, opposite-sex strangers had 10-min conversations with a possible further date in mind. Based on judgments from partners and observers, three main findings were produced. First, judgments of attractiveness/vitality perceptions (compared with warmth/trustworthiness and status/resources) were the most accurate and were predominant in influencing romantic interest and decisions about further contact. Second, women were more cautious and choosy than men—women underestimated their partner’s romantic interest, whereas men exaggerated it, and women were less likely to want further contact. Third, a mediational model found that women (compared with men) were less likely to want further contact because they …

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A Theory Of Aggregate Consumption, Yun K. Kim, Mark Setterfield, Yuan Mei Apr 2014

A Theory Of Aggregate Consumption, Yun K. Kim, Mark Setterfield, Yuan Mei

Research Collection School Of Economics

We develop a Keynesian model of aggregate consumption. Our theory emphasizes the importance of the relative income hypothesis and debt finance for understanding household consumption behavior. It is shown that particular importance attaches to how net debtor households service their debts, and that the treatment of debt-servicing commitments as a substitute for savings by these households creates the potential for 'sudden stops' in consumption spending (and hence aggregate demand).

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Long-Term Health Effects Of Malaria Exposure Around Birth: Evidence From Colonial Taiwan, Simon Chang, Belton Fleisher, Seonghoon Kim, Shi-Yung Liu Apr 2014

Long-Term Health Effects Of Malaria Exposure Around Birth: Evidence From Colonial Taiwan, Simon Chang, Belton Fleisher, Seonghoon Kim, Shi-Yung Liu

Research Collection School Of Economics

In the early 20th century, the Japanese colonial government initiated an island-wide malaria eradication campaign in Taiwan, resulting in not only a rapid decline in malaria across time but also elimination of disparity across regions. Exploiting variations in malaria deaths caused by the campaign, we estimate causal effects of malaria exposure around birth on the health of elderly born in the colonial period. To mitigate potential biases caused by measurement errors and omitted confounders, we employ climatic factors to instrument for malaria deaths. Our findings suggest that people who were exposed to a high malaria risk around birth tend to …

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Further Evidence On The Spatio-Temporal Model Of House Prices In The United States, Badi H. Baltagi, Jing Li Apr 2014

Further Evidence On The Spatio-Temporal Model Of House Prices In The United States, Badi H. Baltagi, Jing Li

Research Collection School Of Economics

Holly, Pesaran, and Yamagata (Journal of Econometrics 2010; 158: 160–173) use a panel of 49 states over the period 1975–2003 to show that state-level real housing prices are driven by economic fundamentals, such as real per capita disposable income, as well as by common shocks, such as changes in interest rates, oil prices and technological change. They apply the common correlated effects estimator of Pesaran (Econometrica 2006; 74(4): 967–101), which takes into account spatial interactions that reflect both geographical proximity and unobserved common factors. This paper replicates their results using a panel of 381 metropolitan statistical areas observed over the …

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Robust Tracking With Discriminative Ranking Middle-Level Patches, Hong Liu, Zilin Liang, Qianru Sun Apr 2014

Robust Tracking With Discriminative Ranking Middle-Level Patches, Hong Liu, Zilin Liang, Qianru Sun

Research Collection School Of Computing and Information Systems

The appearance model has been shown to be essential for robust visual tracking since it is the basic criterion to locating targets in video sequences. Though existing tracking-by-detection algorithms have shown to be greatly promising, they still suffer from the drift problem, which is caused by updating appearance models. In this paper, we propose a new appearance model composed of ranking middle-level patches to capture more object distinctiveness than traditional tracking-by-detection models. Targets and backgrounds are represented by both low-level bottom-up features and high-level top-down patches, which can compensate each other. Bottom-up features are defined at the pixel level, and …

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Cimloc: A Crowdsourcing Indoor Digital Map Construction System For Localization, Xiuming Zhang, Yunye Jin, Hwee Xian Tan, Wee-Seng Soh Apr 2014

Cimloc: A Crowdsourcing Indoor Digital Map Construction System For Localization, Xiuming Zhang, Yunye Jin, Hwee Xian Tan, Wee-Seng Soh

Research Collection School Of Computing and Information Systems

Indoor maps, as crucial prerequisites for many indoor localization and navigation systems, are sometimes inaccessible. The absence of an indoor map database and the high cost of manually constructing an indoor map produce a need for an inexpensive and efficient way to dynamically construct indoor maps. The ubiquity of sensor-equipped mobile devices enables us to crowdsource user trajectories, out of which indoor digital maps can be automatically constructed at low costs. Similar to other crowdsourced data, the collected user trajectories are often noisy and of low fidelity, which poses a challenge to the accurate map construction. To alleviate this problem, …

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A Hybrid Scheme For Authenticating Scalable Video Codestreams, Zhuo Wei, Yongdong Wu, Robert H. Deng, Xuhua Ding Apr 2014

A Hybrid Scheme For Authenticating Scalable Video Codestreams, Zhuo Wei, Yongdong Wu, Robert H. Deng, Xuhua Ding

Research Collection School Of Computing and Information Systems

A scalable video coding (SVC) codestream consists of one base layer and possibly several enhancement layers. The base layer, which contains the lowest quality and resolution images, is the foundation of the SVC codestream and must be delivered to recipients, whereas enhancement layers contain richer contour/texture of images in order to supplement the base layer in resolution, quality, and temporal scalabilities. This paper presents a novel hybrid authentication (HAU) scheme. The HAU employs both cryptographic authentication and content-based authentication techniques to ensure integrity and authenticity of the SVC codestreams. Our analysis and experimental results indicate that the HAU is able …

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Recurrent Chinese Restaurant Process With A Duration-Based Discount For Event Identification From Twitter, Qiming Diao, Jing Jiang Apr 2014

Recurrent Chinese Restaurant Process With A Duration-Based Discount For Event Identification From Twitter, Qiming Diao, Jing Jiang

Research Collection School Of Computing and Information Systems

Due to the fast development of social media on the Web, Twitter has become one of the major platforms for people to express themselves. Because of the wide adoption of Twitter, events like breaking news and release of popular videos can easily catch people’s attention and spread rapidly on Twitter, and the number of relevant tweets approximately reflects the impact of an event. Event identification and analysis on Twitter has thus become an important task. Recently the Recurrent Chinese Restaurant Process (RCRP) has been successfully used for event identification from news streams and news-centric social media streams. However, these models …

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Clonepedia: Summarizing Code Clones By Common Syntactic Context For Software Maintenance, Yun Lin, Zhenchang Xing, Xin Peng, Yang Liu, Jun Sun, Wenyun Zhao, Jin Song Dong Mar 2014

Clonepedia: Summarizing Code Clones By Common Syntactic Context For Software Maintenance, Yun Lin, Zhenchang Xing, Xin Peng, Yang Liu, Jun Sun, Wenyun Zhao, Jin Song Dong

Research Collection School Of Computing and Information Systems

Code clones have to be made explicit and be managed in software maintenance. Researchers have developed many clone detection tools to detect and analyze code clones in software systems. These tools report code clones as similar code fragments in source files. However, clone-related maintenance tasks (e.g., refactorings) often involve a group of code clones appearing in larger syntactic context (e.g., code clones in sibling classes or code clones calling similar methods). Given a list of low-level code-fragment clones, developers have to manually summarize from bottom up low-level code clones that are relevant to the syntactic context of a maintenance task. …

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Seasonal Dynamics Of A Suburban Energy Balance In Phoenix, Arizona, Winston T. L. Chow, Thomas J. Volo, Enrique R. Vivoni, G. Darrel Jenerette, Benjamin L. Ruddell Mar 2014

Seasonal Dynamics Of A Suburban Energy Balance In Phoenix, Arizona, Winston T. L. Chow, Thomas J. Volo, Enrique R. Vivoni, G. Darrel Jenerette, Benjamin L. Ruddell

Research Collection School of Social Sciences

Observations of local-scale urban surface energy balance (SEB), which include fluxes of net all-wave radiation (Q*), and eddy covariance measurements of sensible (QH) and latent heat (QE) were collected in an arid Phoenix, AZ suburb from January to December 2012. We studied diurnal variations in SEB partitioning over four distinct seasons: winter, equinoxes, and summer; the latter period is further subdivided into (1) months prior to and (2) months occurring during the North American Monsoon. Largest flux densities were observed in summer, with most available energy partitioned into QH. Much less energy is partitioned into QE, but this term is …

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Judging A Man By The Width Of His Face: The Role Of Facial Ratios And Dominance In Mate Choice At Speed-Dating Events, Katherine A. Valentine, Norman P. Li, Lars Penke, David I. Perrett Mar 2014

Judging A Man By The Width Of His Face: The Role Of Facial Ratios And Dominance In Mate Choice At Speed-Dating Events, Katherine A. Valentine, Norman P. Li, Lars Penke, David I. Perrett

Research Collection School of Social Sciences

Previous research shows that men with higher facial width-to-height ratios (fWHRs) have higher testosterone, are more aggressive, more powerful, and more financially successful, but are they more attractive to women in an ecologically valid mating context, speed-dating? Male fWHR was positively associated with perceptions of dominance, being chosen for a second date, and attractiveness to women for short-term, but not long-term relationships. Perceived dominance mediated (by itself and through physical attractiveness) the relationship between fWHR and women’s interest in short-term relationships. Furthermore, men’s perceptions of own dominance reflected patterns in mating desirability similar to those of fWHR. These results support …

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Interim Equilibrium Implementation, Takashi Kunimoto Mar 2014

Interim Equilibrium Implementation, Takashi Kunimoto

Research Collection School Of Economics

A social choice rule is said to be implementable if one can design a mechanism(or institution) in which the set of outcomes prescribed by a given solutionconcept coincides with that specified by the social choice rule. I adoptinterim equilibrium (i.e., Bayesian Nash equilibrium where each agent’s interimbeliefs do not necessarily admit a prior) as the solution concept andinvestigate the corresponding implementation problem in general incompleteinformation environments. I identify arguably the weakest set of conditionsunder which implementation in interim equilibrium is possible. By doingso, I also unify the literature of the so-called Bayesian implementation andNash implementation.

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The Sourcing Hub And Upstream Supplier Networks, Anupam Agrawal, Luk N. Van Wassenhove, Arnoud De Meyer Mar 2014

The Sourcing Hub And Upstream Supplier Networks, Anupam Agrawal, Luk N. Van Wassenhove, Arnoud De Meyer

Research Collection Lee Kong Chian School Of Business

In this paper, we explore how firms can better manage their sourcing by developing relationships not only with their suppliers but also with their suppliers' suppliers. We detail an empirical case study explaining how the firm developed relationships with its suppliers and raw material suppliers via a collaborative center, the sourcing hub. We then analytically model the scenarios encountered in our empirical work and examine two facets of upstream sourcing under uncertain demand scenarios: (a) firms can supply raw material directly to their suppliers, and this may be beneficial for the firm and its suppliers; and (b) firms can bring …

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Aggregating Information In Option Transactions, Richard Holowczak, Jianfeng Hu, Liuren Wu Mar 2014

Aggregating Information In Option Transactions, Richard Holowczak, Jianfeng Hu, Liuren Wu

Research Collection Lee Kong Chian School Of Business

The listed options market in the United States trades hundreds of option contracts across different strikes and expirations for each underlying stock. The order flow from these option transactions reveals important information about the underlying stock price movement and its volatility variation. How to aggregate the trade information of different option contracts underlying the same stock presents an important challenge for developing microstructure theories and understanding price discovery mechanisms in the derivatives market. This paper takes options on QQQQ, the Nasdaq 100 tracking stock, as an example and examines different order flow aggregation methods in terms of their effectiveness in …

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Family Incivility And Job Performance: A Moderated Mediated Model Of Psychological Distress And Core Self-Evaluation, Sandy Lim, Kenneth Tai Mar 2014

Family Incivility And Job Performance: A Moderated Mediated Model Of Psychological Distress And Core Self-Evaluation, Sandy Lim, Kenneth Tai

Research Collection Lee Kong Chian School Of Business

This study extends the stress literature by exploring the relationship between family incivility and job performance. We examine whether psychological distress mediates the link between family incivility and job performance. We also investigate how core self-evaluation might moderate this mediated relationship. Data from a 2-wave study indicate that psychological distress mediates the relationship between family incivility and job performance. In addition, core self-evaluation moderates the relationship between family incivility and psychological distress but not the relationship between psychological distress and job performance. The results hold while controlling for general job stress, family-to-work conflict, and work-to-family conflict. The findings suggest that …

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A Lack Of Material Resources Causes Harsher Moral Judgments, Marko Pitesa, Stefan Thau Mar 2014

A Lack Of Material Resources Causes Harsher Moral Judgments, Marko Pitesa, Stefan Thau

Research Collection Lee Kong Chian School Of Business

In the research presented here, we tested the idea that a lack of material resources (e.g., low income) causes people to make harsher moral judgments because a lack of material resources is associated with a lower ability to cope with the effects of others' harmful behavior. Consistent with this idea, results from a large cross-cultural survey (Study 1) showed that both a chronic (due to low income) and a situational (due to inflation) lack of material resources were associated with harsher moral judgments. The effect of inflation was stronger for low-income individuals, whom inflation renders relatively more vulnerable. In a …

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A Comparative Study On The Effectiveness Of Part-Of-Speech Tagging Techniques On Bug Reports, Yuan Tian, David Lo Mar 2014

A Comparative Study On The Effectiveness Of Part-Of-Speech Tagging Techniques On Bug Reports, Yuan Tian, David Lo

Research Collection School Of Computing and Information Systems

Many software artifacts are written in natural language or contain substantial amount of natural language contents. Thus these artifacts could be analyzed using text analysis techniques from the natural language processing (NLP) community, e.g., the part-of-speech (POS) tagging technique that assigns POS tags (e.g., verb, noun, etc.) to words in a sentence. In the literature, several studies have already applied POS tagging technique on software artifacts to recover important words in them, which are then used for automating various tasks, e.g., locating buggy files for a given bug report, etc. There are many POS tagging techniques proposed and they are …

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Retrieval-Based Face Annotation By Weak Label Regularized Local Coordinate Coding, Dayong Wang, Steven C. H. Hoi, Ying He, Jianke Zhu, Mei Tao, Jiebo Luo Mar 2014

Retrieval-Based Face Annotation By Weak Label Regularized Local Coordinate Coding, Dayong Wang, Steven C. H. Hoi, Ying He, Jianke Zhu, Mei Tao, Jiebo Luo

Research Collection School Of Computing and Information Systems

Auto face annotation, which aims to detect human faces from a facial image and assign them proper human names, is a fundamental research problem and beneficial to many real-world applications. In this work, we address this problem by investigating a retrieval-based annotation scheme of mining massive web facial images that are freely available over the Internet. In particular, given a facial image, we first retrieve the top n similar instances from a large-scale web facial image database using content-based image retrieval techniques, and then use their labels for auto annotation. Such a scheme has two major challenges: 1) how to …

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Keystroke Biometrics: The User Perspective, Chee Meng Tey, Payas Gupta, Kartik Muralidaran, Debin Gao Mar 2014

Keystroke Biometrics: The User Perspective, Chee Meng Tey, Payas Gupta, Kartik Muralidaran, Debin Gao

Research Collection School Of Computing and Information Systems

Usability is an important aspect of security, because poor usability motivates users to find shortcuts that bypass the system. Existing studies on keystroke biometrics evaluate the usability issue in terms of the average false rejection rate (FRR). We show in this paper that such an approach underestimates the user impact in two ways. First, the FRR of keystroke biometrics changes for the worse under a range of common conditions such as background music, exercise and even game playing. In a user study involving 111 participants, the average penalties (increases) in FRR are 0.0360 and 0.0498, respectively, for two different classifiers. …

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"Those Stubborn Principles": From Stoicism To Sociability In Joseph Addison’S Cato, Christine Dunn Henderson, Mark Yellin Mar 2014

"Those Stubborn Principles": From Stoicism To Sociability In Joseph Addison’S Cato, Christine Dunn Henderson, Mark Yellin

Research Collection School of Social Sciences

Joseph Addison’s 1713 play, Cato: A Tragedy, dramatizes the final days of Cato the Younger’s resistance to Julius Caesar before his eventual suicide at Utica in 46 BC. Although Addison initially seems to present Cato as a model for emulation, we argue that Addison is ultimately critical of both Cato and the Stoicism he embodies. Via the play’s romantic subplot and via his work as an essayist, Addison offers a revision of the Catonic model, reworking it into a gentler model that elevates qualities such as love, friendship, and sympathy and that is more appropriate to the type of peaceful …

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Thinking Bigger And Better About "Bad Apples": Evolutionary Industrial/Organizational Psychology And The Dark Triad, Peter K. Jonason, Serena Wee, Norman P. Li Mar 2014

Thinking Bigger And Better About "Bad Apples": Evolutionary Industrial/Organizational Psychology And The Dark Triad, Peter K. Jonason, Serena Wee, Norman P. Li

Research Collection School of Social Sciences

The focal article by Guenole (2014) correctly contends that industrial–organizational (I–O) psychology has been overly reliant on the Big Five or the five-factor model (Benet-Martínez & John, 1998). Although popular and useful, the Big Five also tends to be limited in two important ways. The Big Five is a set of atheoretically derived, descriptive adjectives, and it tends to better tap “positive” aspects of people's personality over “negative” or “darker” sides. A number of authors have highlighted the importance of examining “darker” aspects of people's personality both outside (Jonason, Li, Webster, & Schmitt, 2009; Lee & Ashton, 2005; Paulhus & …

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The Eu's Use Of Targeted Sanctions: Evaluating Effectiveness, Clara Portela Mar 2014

The Eu's Use Of Targeted Sanctions: Evaluating Effectiveness, Clara Portela

Research Collection School of Social Sciences

This study analyses the use by the European Union of the novel concept of ‘targeted sanctions’ in the framework of its Common Foreign and Security Policy. It examines two sets of sanctions regimes featuring different degrees of efficacy: in Myanmar and Zimbabwe, the EU wielded measures in support of human rights and democracy objectives in the absence of a United Nations mandate, while it supplemented UN sanctions to stop nuclear proliferation in Iran and North Korea. The study highlights a number of facilitators of, or hindrances to, the efficacy of sanctions, such as the degree of support by regional powers …

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Sentimental Drivers Of Social Entrepreneurship: A Study Of China's Guangcai (Glorious) Program, Daphne W. Yiu, William P. Wan, Frank W. Ng, Xing Chen, Jun Su Mar 2014

Sentimental Drivers Of Social Entrepreneurship: A Study Of China's Guangcai (Glorious) Program, Daphne W. Yiu, William P. Wan, Frank W. Ng, Xing Chen, Jun Su

Research Collection Lee Kong Chian School Of Business

Social entrepreneurship plays an important role in local development in emerging economies, but scholars have paid little attention to this emerging phenomenon. Under the theory of moral sentiments, we posit that some entrepreneurs are altruistically motivated to promote a morally effective economic system by engaging in social entrepreneurial activities. Focusing on China's Guangcai (Glorious) Program, a social entrepreneurship program initiated by China's private entrepreneurs to combat poverty and contribute to regional development, we find that private entrepreneurs are motivated to participate in such programs if they have more past distressing experiences, including limited educational opportunities, unemployment experience, rural poverty experience, …

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On Predicting User Affiliations Using Social Features In Online Social Networks, Minh Thap Nguyen Mar 2014

On Predicting User Affiliations Using Social Features In Online Social Networks, Minh Thap Nguyen

Dissertations and Theses Collection (Open Access)

User profiling such as user affiliation prediction in online social network is a challenging task, with many important applications in targeted marketing and personalized recommendation. The research task here is to predict some user affiliation attributes that suggest user participation in different social groups.

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Improving Money's Worth Ratio Calculations: The Case Of Singapore's Pension Annuities, Joelle H. Y. Fong, Jean Lemaire, Yiu Kuen Tse Mar 2014

Improving Money's Worth Ratio Calculations: The Case Of Singapore's Pension Annuities, Joelle H. Y. Fong, Jean Lemaire, Yiu Kuen Tse

Research Collection School Of Economics

This article contributes to a better understanding of the risks involved in a life annuity investment. We examine the distribution of weighted annuity benefits and assess various measures of dispersion such as the coefficient of variance. In particular, we quantify the standard deviation about the expected value, thereby extending the usefulness of the popular money’s worth framework for annuity valuation. The effort toward a more detailed and more accurate risk picture of investing in annuities enables retirees to differentiate among products that may appear seemingly uniform in terms of money’s worth, but vary widely in terms of their risk attributes.

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Community-Based Management Of Tricholoma Matsutake: A Case Study Of South Korean Mountain Villages, Terry Van Gevelt Mar 2014

Community-Based Management Of Tricholoma Matsutake: A Case Study Of South Korean Mountain Villages, Terry Van Gevelt

Research Collection College of Integrative Studies

Tricholoma matsutake (S. Ito and S. Imai) Singer commercialisation provides significant economic benefits to rural communities, mainly in China, Japan and South Korea. Recently, a growing body of research has questioned the impact of commercialization on harvesting behavior and the supply of matsutake. One key question arising from this literature is whether or not community-based management (CBM) has a positive impact on matsutake supply. I surveyed nine mountain villages in Gangwon and North Gyeongsang provinces in South Korea. Four villages were found to have begun CBM of matsutake in the mid-1980s to early-1990s. All four villages continued to engage in …

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