• Journal of Information Processing Systems
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• 제13권5호
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• pp.1277-1298
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• 2017

Related to the maximum vector problem, a skyline query is to discover dominating tuples from a set of tuples, where each defines an object (such as a hotel) in several dimensions (such as the price and the distance to the beach). A tuple, an instance of an object, dominates another tuple if it is equally good or better in all dimensions and better in at least one dimension. Traditionally, skyline queries are defined upon single-instance data or upon objects each of which is associated with an instance. However, in some cases, an object is not associated with a single instance but rather by multiple instances. For example, on a review website, many users assign scores to a product or a service, and a user's score is an instance of the object representing the product or the service. Such data is an example of multi-instance data. Unlike most (if not all) others considering the traditional setting, we consider skyline queries defined upon multi-instance data. We define the dominance calculation and propose an algorithm to reduce its computational cost. We use synthetic and real data to evaluate the proposed methods, and the results demonstrate their utility.

• 감성과학
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• 제9권1호
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• pp.63-75
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• 2006

본 연구는 브랜드 커피의 온 오프라인 매장의 색채 이미지 통일을 통하여 브랜드 이미지 향상을 이루는데 목적을 두고 수행된 기초연구이다. 소비자에게 비춰진 색채 이미지와 브랜드 자체의 고유 색채전략과의 일치성 측정하기 위해 온 오프라인 매장의 색채 이미지 조사를 실시하였으며, 브랜드 선호도 조사를 통하여 브랜드 선호도와 온 오프라인 매장의 색채 이미지 통일 간의 관계를 밝히려했다. 브랜드 고유의 색채전략에 기초하여 오프라인 매장의 색채 이미지와 통일성을 가진 웹 색채계획을 통해서 효과적인 색채전략을 수립하는 데 본 연구의 목적을 둔다. '브랜드 커피의 색채전략에 관한 연구'를 선행연구로 하여 선행연구에서 논의된 온 오프라인의 통합색채전략의 필요성에 인식을 같이하여 구체적 해결과제로 시작된 연구로 웹 사이트 설계 시 색채계획의 차원으로 접근하였다. 색채 이미지의 분석을 위해 사용한 두 가지 기준으로는 색채의 감성적 측면과 색채의 기능적 측면인데 이를 측정하기 위한 기준으로 I.R.I.의 색이미지 척도와 사또루후지의 색채정보전달의 5가지 요인을 사용했다. 오프라인의 자극물을 인쇄물로만 제한했던 선행연구의 제한점을 보완하여 오프라인 매장을 직접 방문하여 조사하는 방법의 조사를 실시하였으며 이를 통해 오프라인 매장의 전반적인 색채 이미지 조사를 가능하게 하였으며, 웹 사이트 색채 계획 시 유의해야 할 사항들을 구체적으로 제시하여 실제적인 가이드라인으로 제공하려 하였다. 본 연구를 통해 브랜드 고유의 색채전략 을 기초로 한 온 오프라인의 색채 이미지 통일을 이루며 이를 통한 총체적인 브랜드 이미지 향상에 본 연구가 기여되길 기대한다.

• 산경연구논집
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• 제8권1호
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• pp.33-39
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• 2017

Purpose - The main purpose of the current study is to examine the impact of accounting information quality and information asymmetry on the underinvestment phenomenon among the listed companies on the Tehran Stock Exchange (TSE). Research design, data, and methodology - The population includes 94 firms selected through systematic sampling. The data is collected from the audited financial statements of the firms provided by TSE's website from 2010 to 2015. Accounting information quality and information asymmetry is considered as independent variables, and their impact is examined on the dependent variable (underinvestment). Results - The statistical results, based on data collected from 94 listed companies on the TSE during 2010-2015, revealed positive impact of accounting information quality and positive impact of information asymmetry on underinvestment. There was a significant relationship between accrual quality (AQ) and underinvestment, and spread and underinvestment. The results also showed that information asymmetry is the main factor in the creation underinvestment. Conclusions - Findings of this article can assist accounting researchers and theoreticians in comparing Real world facts with hypotheses developed with respect to accounting information quality, information asymmetry and underinvestment. However, the results of fuzzy regression analysis indicate significant relationships between the independent variable except underinvestment.

• The Journal of Asian Finance, Economics and Business
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• 제8권8호
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• pp.443-451
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• 2021

The classification standards for hotels in Vietnam are different from many other hotel classification standards in the world. This study aims to analyze customer reviews on the TripAdvisor website to develop a new algorithm for hotel rating that is independent of Vietnam's hotel classification standards. This method can be applied to individual hotels, or hotels of a region or the whole country, while online booking sites only rate individual hotels. Data was crawled from TripAdvisor with 22,287 reviews of 5 cities in Vietnam. This study used a statistical model to analyze the review dataset and build an algorithm to rate hotels according to aspects or hotel overall. The results have less rating deviation when compared to the TripAdvisor system. This study also supports hotel managers to regularly update the status of their hotels using data from customer reviews, from which, managers can strategize long-term solutions to improve the quality of the hotel in all aspects and attract more travelers to Vietnam. Moreover, this method can be developed into an automatic system to rate hotels and update the status of service quality more quickly, thus, saving time and costs.

• 유통과학연구
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• 제16권5호
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• pp.5-15
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• 2018

Purpose - Nowadays customers have become empowered by information communication technologies. This state of customers has brought enormous pressure to bear on organizations, thus, organizations have to stay relevant, market-oriented and profitable. The insurance sector is one that is constantly challenged by its exposure to ICT and the associated need for e-services by myriad customers. With increasing competition in the health insurance environment, it is necessary for the sector to understand customer expectations and how they perceive the services offered. This study seeks to determine the role played by e-services in relation to customer satisfaction in health insurance industry in Botswana where a substantial investment has been made in the sector. Research design, data, and methodology - This study is conducted using two prominent medical aid schemes in Botswana namely BPOMAS and PULA. Subscribers of these medical schemes were the respondents whose views were sourced using both closed and open ended questionnaires. Systemic sampling technique was used to select the participants, while descriptive statistical techniques were mainly used to analyze socio-demographic data of the samples. Results - The results reveal that the level of usage of the medical insurance firm's website and email service is higher for PULA participants than for BPOMAS participants. Conclusions - The findings of this study have practical implications for managers who should understand customers' value perceptions regarding e-service quality in Botswana.

• 유통과학연구
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• 제19권7호
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• pp.5-17
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• 2021

Purpose: The distribution of goods and the flow of information, determined by consumer behavior toward online shopping, is drastically popular worldwide. This study examines some factors such as brand trust, online sales promotion, consumer personality, delivery service, quality assurance, information search, and online consumer satisfaction influence online shopping behavior. Research design, data, and methodology: A constructed questionnaire in an online survey was conducted with 241 random cluster respondents in the greater Jakarta Area. Structure equation model was utilized to analyze and verify all the data. Results: Research finding indicates online sales promotion, delivery service, quality assurance, and online consumer satisfaction positively influence information search. Meanwhile, brand trust, quality assurance, and information search positively influence online shopping behavior. However, the result illustrates that consumer personality negatively influences both information search and online shopping behavior. Conclusions: To influence online shopping behavior, the most important factors that need to be considered by marketplaces are quality assurance. It positively motivates Indonesia's citizens to collect information and make unplanned purchases. The study finding can be a reference for brands to maintain and build outstanding product quality, an informational website, and an excellent marketing strategy so that customers can meet their expectations. Besides, it also broadens both companies' and individuals' knowledge about the digital revolution on consumer behavior.

• International Journal of Computer Science & Network Security
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• 제22권2호
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• pp.311-317
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• 2022

The research is devoted to the substantiation of the system approach to the involvement of digital marketing tools as a guarantee of international business development. It is proved that digital marketing, as a type of marketing based on the use of digital technologies allows to make a profit, to promote the brand, as well as goods and services in the market. The digital marketing toolkit system is a set of elements with existing relationships that ensure the effectiveness of the entire digital marketing, which in total is greater than its individual components. The implementation of a systems approach involves the implementation of the philosophy of digital marketing in general, its functions in the form of systems analysis, formation of strategic development goals and entry and promotion in the international market, preparation and implementation of tactical and strategic development plans.The use of such digital marketing tools as: content marketing, social media marketing, Email-marketing, targeted advertising, contextual advertising, media advertising, Search Engine Optimization, affiliate programs and the company's website is analyzed in detail.

• 산경연구논집
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• 제7권2호
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• pp.13-20
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• 2016

Purpose - The purpose of this research is to discover whether the presence of the product average rating introduces biases or change the way people perceive information. We posit that review's overall rating has a predisposition effect on consumers' perception towards detailed review information. Research design, data, and methodology - To test these hypotheses, we conducted an empirical study on a real-world setting of online shopping platform. We choose the Amazon website to test our results. The data we use were collected by the Stanford Network Analysis Project1 (McAuley et al., 2013). Results - With a dataset containing reviews of seven product categories from amazon.com., our findings could possess more generalizability as they are produced on the typical and influential online market. Second, as our research provides alternative views of consumers' shopping behavior, it is better to test our hypotheses by data from the same source. Conclusions - Our study reveals the impact of the collective rating presence on consumers' diagnosticity perception and sheds light upon some of the conflictive results in prior studies. Our research generates implications to both theories and business practices, and suggests future directions for the research question.

• 한국비블리아학회지
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• 제13권1호
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• pp.59-75
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• 2002

본 연구는 웹기반의 대학도서관서비스의 사용편리성을 서비스의 효율성, 효용성, 만족도 변인으로 측정하였다. 무작위로 선정한 13명의 피험자에게 총6종의 과제를 제시하였다. 2001년 12월 15일부터 2002년 2월 27일까지 덕성여자대학교도서관 정보검색실에서 피험자들의 과제수행 과정을 관찰하였다. 피험자들은 6종의 과제에서 3.6개의 과제를 성공적으로 완수하였다. 평균 과제성공률은 60%이며. 과제 당 소요시간은 2분 22초로 나타났다. 가장 효율적인 서비스는 도서검색서비스(100%)이며, 가장 비효율적인 서비스는 기사검색서비스로 23.1％의 가장 낮은 성공률을 보였다. 또한 가장 효용성이 높은 서비스는 성공과제 당시간이 가장 적게 소요된 도서검색서비스(42.2초)이며 가장 효용성이 낮은 서비스는 기사검색서비스(271.7초)로 들어났다. 피험자들은 도서관웹사이트 상에서 가장 이해하기 쉬운 도서구입신청서비스를 가장 편리하다고 간주하였으며. 또한 가장 만족스러운 서비스로 평가하였다. 웹 기반으로 제공하는 대학도서관서비스는 풍부한 정보자원을 소장하고 각종 양질의 도서관서비스를 이용자에게 제공하고 있음에도 불구하고 실제 이용자에 의한 사용편리성(usability)은 도서검색을 제외하고는 저조한 편으로 나타났다. 특히 원문검색이나 기사검색과 같은 고급서비스는 극히 성공률이 낮아 비효율적으로 운영되고 있는 서비스로 평가되었다.

• The Journal of Asian Finance, Economics and Business
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• 제9권5호
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• pp.187-199
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• 2022

The purpose of this study was to offer a new conceptual framework based on a combination of the TPB model, the TAM model, and two additional constructs consisting of eWOM and pricing value called the E-P-TAM-TPB model, and to assess the model's implications on hotel selection behavior. This study empirically examines the E-P-TAM-TPB model to evaluate and validate domestic tourists' online hotel booking intentions by using the partial least squares structural equation modeling (PLS-SEM) approach. The data was collected from 355 domestic tourists who booked the room via the hotel website. The major findings of this study indicated that the E-P-TAM-TPB model has a positive significant influence on online hotel selection behavior. The results revealed that all proposed hypotheses were declared supported. Future studies should build on the framework by incorporating potential moderators to better understand how different groups of customers behave online in different segments of the hospitality industry. Managers must not only develop an easy booking process but also provide price value information to attract or impress clients. Tourists can compare room rates with other hotel websites and OTAs.