Se-Hak Chun

Se-Hak Chun
Seoul National University of Science and Technology · Department of Business Administration

Ph.D

About

77
Publications
21,541
Reads
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918
Citations
Citations since 2017
18 Research Items
456 Citations
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2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
2017201820192020202120222023020406080100
Introduction
Se-Hak Chun is a Professor at Seoul National University of Science and Technology. He was a visiting professor at University of Illinois at Urbana Champaign and Indiana University. He has published articles in journals including Artificial Intelligence in Medicine, Decision Support Systems, Expert Systems, Expert Systems with Applications, International Journal of Forecasting, International Review of Economics and Finance, Information technology and management, Journal of Cluster Computing, Personal and ubiquitous computing and among others. His research interests business analytics and datamining, complex theory, economics of information system, electronic commerce, law and economics, economy of communion.
Additional affiliations
January 2005 - October 2016
Seoul National University of Science and Technology
Position
  • Professor (Full)

Publications

Publications (77)
Article
Full-text available
Social enterprises seek to maximize benefits to society and the environment while obtaining profits. Social enterprises are increasing in number; however, their size and growth rates are very small. In addition, many social enterprises face difficulties in obtaining profits through social activities that generate social value, even though they are...
Article
Full-text available
In this paper, we suggest a new case-based reasoning method for stock price predictions using the knowledge of traders to select similar past patterns among nearest neighbors obtained from a traditional case-based reasoning machine. Thus, this method overcomes the limitation of conventional case-based reasoning, which does not consider how to retri...
Article
In this article, we extend the model of Newman, H., and D. Wright. 1990. “Strict Liability in a Principal-Agent Model.” International Review of Law and Economics 10: 219–231 and strengthens their result that the strict liability can attain social optimum in a principal-agent relation to the situation in which the court appreciates any contractual t...
Article
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The fast food restaurant business is one of the fastest-growing industries in the world. International and local restaurant chains are trying to satisfy the demands of customers for a variety of products and services. Along with changing market trends, customers are now becoming more sophisticated and demanding. Customer satisfaction is an essentia...
Article
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Case based reasoning is a knowledge discovery technique that uses similar past problems to solve current new problems. It has been applied to many tasks, including the prediction of temporal variables as well as learning techniques such as neural networks, genetic algorithms, decision trees, etc. This paper presents a geometric criterion for select...
Article
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Previous studies have introduced different potential pricing strategies for cloud services. However, not much research has been done comparing subscription pricing and pay-per-use pricing, which are commonly used pricing schemes. Also, there are very few studies which analyze a two-part tariff pricing scheme for cloud services, even though this opt...
Article
Full-text available
This paper analyzes how the market power in a supply chain affects a manufacturer’s hybrid marketing channel strategies, considering market transaction costs and the ratio of market size of the online market and the offline market. Also, this paper investigates a price-matching strategy when a manufacturer adds an online channel. This paper shows a...
Article
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Consumer reviews on the web have rapidly become an important information source through which consumers can share their experiences and opinions about products and services. It is a form of text-based communication that provides new possibilities and opens vast perspectives in terms of marketing. Reading consumer reviews gives marketers an opportun...
Article
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This study investigates liability issues in electronic transactions when security or privacy breaches occur. As data is transferred using various devices, such as PCs, mobile phones, tablets, sensors, smart meters, and cars, and various architecture, such as the cloud, IoT, as well as in well-defined network structures in electronic commerce, priva...
Conference Paper
Full-text available
The emergence of crypto-currency breaks the concept of existing currency. Against this backdrop, there is a move to issue Central Bank Digital Currency. In addition to the regulation on crypto-currency, it is to distribute the crypto-currency example directly so as not to confuse the financial policy with private crypto-currency. This study examine...
Article
With the proliferation of electronic web-based and mobile payment systems, the concern about ownership of liabilities for potentially fraudulent transactions has come under the spotlight. This study investigates the consequences of alternative legal regimes on online transaction security, with a specific focus on burden of proof. The two types of o...
Article
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This paper analyses cases where data collectors adopt privacy enhancing technologies (PETs) for a data market, and investigates investment strategies for privacy protection technologies. This paper shows the firm has an incentive to invest in privacy enhancing technologies if consumers feel there is a psychological privacy cost. This paper also dis...
Article
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Recently, enterprises have started considering Green SCM (Supply Chain Management) for the purpose of securing a competitive advantage over other enterprises because of the increase of international conventions related to the recent climate change, the strengthening of global regulations for environment protection, the demand for environmental suit...
Article
The purpose of this study is, through journal review, to introduce and analyze the success factor and programs of CONNECT which have made key contributions in the construction of San diego Bio-cluster and thereby show directions business incubators in Korea should try to follow. CONNECT is a most popular bench-marking case over the world for bio-ve...
Article
Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources. To ensure large-scale adoption of cloud computing by businesses, several challenges including security, privacy, trust, performance and other quality attributes need to be addressed. Also, as with other utility services...
Article
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This paper analyzes how the bargaining power in supply chain affects marketing channel strategies of a manufacturer when it considers a direct online channel using a simulation method, and discusses some strategic implications from the perspective of market transaction costs and the portion of online customers. This paper shows interesting results:...
Article
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In this paper, I analyse optimal access charges for the provision of telecommunication network, mobile commerce, and cloud services. Using theoretical analysis, I investigate when a regulator can set rational access pricing, considering the characteristics of access demand. I demonstrate that optimal access prices depend on whether the final produc...
Article
This paper investigates subscription pricing, pay-per-use pricing, and two-part tariff from perspectives of a provider’s profit, consumer surplus, and social welfare, respectively. In particular, this paper extends previous studies on pricing schemes to two-part tariff in addition to subscription pricing and pay-peruse pricing. This paper shows tha...
Chapter
This paper shows how a graphical score has greater effect on music education than the traditional score in general courses at a university level. Generally students have difficulty in understanding music scores, thus music courses as a general selective at the university level need to provide them efficient ways to understand music. In this regard,...
Article
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The paper analyzes the effects of governance adequacy on the corporate performance among Korean manufacturing firms. Most existing governance literature have adopted agency theory and investigated the control role of governance structure on the basis of the stockholder perspective, testing the hypothesis that the better the governance structure, th...
Article
Recently security vulnerabilities and fraudulent transactions have simultaneously increase with the rise in use of smart mobile handsets for electronic transactions. Also, the governing liability rule on disputes arising from security breaches is becoming a practical issue as users get accustomed to doing transactions using various smart and intell...
Article
Recent economic development in Korea was mostly driven by companies in the IT sector. Also, it is widely argued that R&D investment has a positive impact on firm value, especially for IT firms. In this paper, we analyze how R&D investment has contributed to the growth of Korea’s economy by examining the effect of R&D investment on firms’ market val...
Article
This paper considers a relational data system to store XML document efficiently. Also this paper proposes a data model to rewrite XML documents from data storage by representing data view and structure view at the same time and introduce a mapping schema to relational data base system from the data for electronic commerce. © 2013 Springer Science+B...
Article
This paper analyzes hybrid channel strategies of a manufacturer when it considers an online store using analytical and computational simulation methods, and discusses some strategic implications from the perspective of market transaction costs and the portion of online customers.
Article
Virtualization is a way of maximizing physical resources by allowing multiple domains run on a single physical computer. Virtualization technology provides efficient use of computer systems and reduces cost managing hardware, space and energy. Although virtualization provides various advantages, it struggles to support realtime application. In this...
Article
A file synchronization program has to exchange lots of metadata information between a client and a server. As data have been growing rapidly in file synchronization systems, the metadata exchanging overhead is more critical now than before. In this paper, we propose a practical approach for minimizing metadata exchange overhead on the file synchron...
Article
XML has been known as a document standard in representation and exchange of data on the Internet, and is also used as a standard language for the search and reuse of scattered documents on the Internet. The issues related to XML are how to model data on effective and efficient management of semi-structured data and how to actually store the model d...
Article
This study investigates how the green business activities can be affected by awareness of green supply chain management (SCM) and existing cost reduction behaviors. To this end, this study conducts an empirical research of small and medium-sized enterprises based on a questionnaire survey method. This study shows green business practices are affect...
Article
The Internet has led many manufacturers to add direct online retail channels to their existing offline retail networks. Using both online and offline channels, manufacturers increase their market coverage and profits by customizing their products and services for the differing needs of customer segments using separate channels. Much recent research...
Article
Objective: The paper studies the new learning technique called cost-sensitive case-based reasoning (CSCBR) incorporating unequal misclassification cost into CBR model. Conventional CBR is now considered as a suitable technique for diagnosis, prognosis and prescription in medicine. However it lacks the ability to reflect asymmetric misclassificatio...
Article
Nowadays, for sustainable economic development, many countries or companies are investing in green technologies to reduce CO2 and create new revenue streams. This paper evaluates the performances of the green technologies comparing them with those of other technologies using the Korean stock market. Using a regression framework, we also investigate...
Article
We compare the performance of the SRI (Socially Responsible Investing) mutual funds and that of regular mutual funds in Korea. We find that the SRI funds show higher Sharpe ratios and Treynor’s measure compared to regular mutual funds. We also show that return measures are sensitive to weighting scheme; since SRI funds outperform regular funds by 1...
Article
As the Internet prevails, financial transactions using mobile handsets increase with electronic fraudulent transactions at the same time. To prevent fraudulent transactions, security liability rules are needed as well as more security protection techniques. In comparison with the amount of research on technical approach, little research on legal ap...
Article
Full-text available
Even though many manufacturers today are increasingly adopting dual channels to sell their products through their traditional retail channels and their own direct on-line channels, there are still few theoretical studies on manufacturers' optimal channel management strategies and pricing strategies in electronic commerce. Previous studies tend to r...
Article
This study investigates the consequences of two alternative legal systems on e-commerce security in terms of the burden of proof. The paper analyzes corollaries of the two alternative e-commerce regulations by comparing the profits of e-commerce firms and their optimal levels of investment in security. We find, based on our analytical models, that...
Article
This article analyzes how a property tax a¤ects a lease-sale strategy of a durable-good monopolist, and discusses its implication on social welfare with a two-period model. Our model derives some interesting results: (i) Concurrent leasing and selling can be the unique solution. (ii) The property tax causes the monopolist to spread production over...
Conference Paper
This study investigates the consequences of different legal systems for fraudulent transactions in electronic commerce (ecommerce) or online payment. When a fraudulent online transaction occurs and the online customer disputes the transaction, in many European countries, the online customer takes responsibility for the proof of her or his argument,...
Article
Although data mining and knowledge discovery techniques have recently been used to diagnose human disease, little research has been conducted on disease diagnostic modelling using human gene information. Furthermore, to our knowledge, no study has reported on diagnosis models using single nucleotide polymorphism (SNP) information. A disease diagnos...
Article
The economic perspective views tort law as a mechanism to internalize externalities borne by prohibitively high transaction costs. Tort law has been 'reformed' on two different bases of reasoning. Since the producers have a larger bargaining position to manipulate for underinvestment as measures for precaution, strict liability will increase incent...
Article
This paper proposes a regression case based reasoning (RCBR) which applies different weights to independent variables before finding similar cases. The traditional CBR model has focused on finding similar cases from a case base without considering the importance of independent variables. Thus, when extracting similar cases the traditional CBR has p...
Article
Full-text available
Case-based reasoning (CBR) has been used in various problem-solving areas such as financial forecasting, credit analysis and medical diagnosis. However, conventional CBR has the limitation that it has no criterion for choosing the nearest cases based on the probabilistic similarity of cases. It uses a fixed number of neighbors without considering a...
Article
Full-text available
Many information providers in the electronic market struggle to attain revenue from their information goods including contents or other services and they tend to charge for their contents or services since they are confronted with difficulties in attaining revenue from online advertising. This study examines why they begin to charge for their conte...
Article
This paper examines strategic competition behavior in heterogeneous market structure where both conventional offline and online firms coexist in equilibrium and draws strategic implications with some remarks on welfare. Research on the price competition between conventional offline and online firms has been done through empirical approaches; howeve...
Article
Full-text available
Although electronic commerce is regarded as a revolution that has transformed the structure of business and the mechanisms of economic systems, research on price competition and strategic behaviors in electronic commerce has been conducted through empirical approaches, yielding conflicting results. Considering the development of technologies suppor...
Article
This paper proposes a new learning technique which extracts new case vectors using Dynamic Adaptive Ensemble CBR (DAE CBR). The main idea of DAE CBR originates from finding combinations of parameter and updating and applying an optimal CBR model to application or domain area. These concepts are investigated against the backdrop of a practical appli...
Article
This paper proposes a new learning technique which extracts new case vectors using Dynamic Adaptive Ensemble CBR (DAE CBR). The main idea of DAE CBR originates from finding combinations of parameter and updating and applying an optimal CBR model to application or domain area. These concepts are investigated against the backdrop of a practical appli...
Article
The deluge of data available to managers underscores the need to develop intelligent systems to generate new knowledge. Such tools are available in the form of learning systems from artificial intelligence. This paper explores how the novel tools can support decision-making in the ubiquitous managerial task of forecasting. For concreteness, the met...
Article
An alluring aspect of financial investment lies in the opportunity for respectable returns even in the absence of prediction. For instance, a portfolio tied to the S and P500 would have yielded a compound annual return in the teens over the last half century. Over the same period, a portfolio tracking the fast-growth economies of the Far East would...
Article
Full-text available
XML has been proposed as a document standard for the representation and exchange of data on the WWW, and also becoming a standard for the search and reuse of scattered documents. When implementing a XML contents management system, special consideration should be imposed on how to model data and how to store the modelled data for effective and effic...
Article
To an increasing extent since the late 1980s, software learning methods including neural networks (NN) and case based reasoning (CBR) have been used for prediction in financial markets and other areas. In the past, the prediction of foreign exchange rates has focused on isolated techniques, as exemplified by the use of time series models including...
Conference Paper
Full-text available
Many online content providers tend to charge their services since they are confronted with difficulties to attain revenue from the online advertising. This paper shows why they charge their services as the online market becomes grow and explore the strategies when the conventional offline contents firms enter the online contents market. And we also...
Conference Paper
Full-text available
XML has been known as a document standard in representation and exchange of data on the Internet, and is also used as a standard language for the search and reuse of scattered documents on the Internet. The issues related to XML are how to model data on effective and efficient management of semi-structured data and how to actually store the modeled...
Article
Increasing evidence over the past decade indicates that financial markets exhibit nonlinear dynamics in the form of chaotic behavior. Traditionally, the prediction of stock markets has relied on statistical methods including multivariate statistical methods, autoregressive integrated moving average models and autoregressive conditional heteroskedas...
Article
To an increasing extent over the past decade, software learning methods including neural networks have been used for prediction in financial markets and other areas. By far the most popular type of neural network has been backpropagation. However, the advantages of other learning techniques such as the swift response of the probabilistic neural net...

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