• Title/Summary/Keyword: Recommendation Quality

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Evaluating the Quality of Recommendation System by Using Serendipity Measure (세렌디피티 지표를 이용한 추천시스템의 품질 평가)

  • Dorjmaa, Tserendulam;Shin, Taeksoo
    • Journal of Intelligence and Information Systems
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    • v.25 no.4
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    • pp.89-103
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    • 2019
  • Recently, various approaches to recommendation systems have been studied in terms of the quality of recommendation system. A recommender system basically aims to provide personalized recommendations to users for specific items. Most of these systems always recommend the most relevant items of users or items. Traditionally, the evaluation of recommender system quality has focused on the various predictive accuracy metrics of these. However, recommender system must be not only accurate but also useful to users. User satisfaction with recommender systems as an evaluation criterion of recommender system is related not only to how accurately the system recommends but also to how much it supports the user's decision making. In particular, highly serendipitous recommendation would help a user to find a surprising and interesting item. Serendipity in this study is defined as a measure of the extent to which the recommended items are both attractive and surprising to the users. Therefore, this paper proposes an application of serendipity measure to recommender systems to evaluate the performance of recommender systems in terms of recommendation system quality. In this study we define relevant or attractive unexpectedness as serendipity measure for assessing recommendation systems. That is, serendipity measure is evaluated as the measure indicating how the recommender system can find unexpected and useful items for users. Our experimental results show that highly serendipitous recommendation such as item-based collaborative filtering method has better performance than the other recommendations, i.e. user-based collaborative filtering method in terms of recommendation system quality.

A Personalized Recommender System, WebCF-PT: A Collaborative Filtering using Web Mining and Product Taxonomy (개인별 상품추천시스템, WebCF-PT: 웹마이닝과 상품계층도를 이용한 협업필터링)

  • Kim, Jae-Kyeong;Ahn, Do-Hyun;Cho, Yoon-Ho
    • Asia pacific journal of information systems
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    • v.15 no.1
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    • pp.63-79
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    • 2005
  • Recommender systems are a personalized information filtering technology to help customers find the products they would like to purchase. Collaborative filtering is known to be the most successful recommendation technology, but its widespread use has exposed some problems such as sparsity and scalability in the e-business environment. In this paper, we propose a recommendation system, WebCF-PT based on Web usage mining and product taxonomy to enhance the recommendation quality and the system performance of traditional CF-based recommender systems. Web usage mining populates the rating database by tracking customers' shopping behaviors on the Web, so leading to better quality recommendations. The product taxonomy is used to improve the performance of searching for nearest neighbors through dimensionality reduction of the rating database. A prototype recommendation system, WebCF-PT is developed and Internet shopping mall, EBIB(e-Business & Intelligence Business) is constructed to test the WebCF-PT system.

Effect of Market-Wholesaler System on Market Expansion, Re-transaction Intention, and Recommendation Intention

  • ROH, Gye-Ho;YI, Jong-Hyun;CHO, Young-Sam
    • Journal of Distribution Science
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    • v.18 no.5
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    • pp.99-109
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    • 2020
  • Purpose: This study aims to develop and empirically analyze a research model in order to comprehend the relationship among the service quality of market-wholesaler system, re-transaction intention, and recommendation intention of forwarder. Further, we suggest new six factors reflecting the service quality of market-wholesaler system and highlight market expansion of forwarder as a mechanism in the relationship. Research design, data and methodology: The authors developed the new scales measuring the service quality of market-wholesaler system (i.e. trade price, price fluctuation, payment receipt, settlement period, trade information, and customer service) and conducted a cross-sectional survey for 439 forwarders in a wholesale market. And then we performed a series of path analyses to test hypotheses. The hypotheses are as follows. [H1] The service quality of market-wholesaler system will positively affect forwarders' market expansion, [H2] Forwarders' market expansion will positively affect their re-transaction intention, [H3] Forwarders' market expansion will positively affect their recommendation intention, [H4] Forwarders' re-transaction intention will positively affect their recommendation intention. Results: The results showed that all the six factors for the service quality of market-wholesaler system were positively related to market expansion of forwarders. There was a differential effectiveness in the six factors of the service quality. More specifically, the positive effect of customer service factor was the strongest on market expansion of forwarders. And the respective effects of trade price, price fluctuation, settlement period, trade information factors were followed in order. The positive effect of payment receipt factor was the weakest on market expansion of forwarders. Also, market expansion of forwarders was positively related to their re-transaction intention and recommendation intention. Furthermore, market expansion of forwarders was indirectly related to recommendation intention through re-transaction intention as well. Conclusions: The research findings provide important theoretical and practical implications. This study is the first to attempt to test the perception of forwarders for the service quality of market-wholesaler system by developing and using the new scales. Also, there has been a sharp controversy about the effectiveness of market-wholesaler system. The findings support that market-wholesaler system would be activated by empirically verifying the effectiveness of the service quality on the various outcomes.

Effect of Healthcare Quality on Recommended Intention in Vietnam A Hospital : Focusing on Customer Satisfaction Mediated Effects (베트남 A 병원의 의료서비스 품질이 추천의도에 미치는 영향 : 고객 만족도 매개효과를 중심으로)

  • Kim, Bo-Ha;Hwang, Mi-Kung;Lee, Won-Jae
    • Journal of radiological science and technology
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    • v.44 no.2
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    • pp.133-140
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    • 2021
  • This study aims to analyze the quality and satisfaction of healthcare perceived by patients using hospitals and to provide basic data necessary for expanding and settling Vietnamese healthcare services by analyzing the impact on recommendation intentions. The research method selected one hospital in Vietnam and collected data from patients using the hospital and used a total of 286 effective samples as data for hypothesis verification. The research model and hypothesis verification were analyzed with the statistical data from SPSS and AMOS. The findings show that, first, tangibility, accessibility, and reliability all have a positive effect on the quality of healthcare. Second, it has been shown that only accessibility among the quality of healthcare has a positive effect on recommendation intentions. Third, customer satisfaction has been shown to have a positive effect on recommendation intentions. Fourth, when looking at the mediating effect, reliability among the quality of healthcare was shown as a full-mediated effect, but accessibility was shown to have a partial mediating effect and tangibility to have no mediating effect. Contact management is important because customer satisfaction is highly regarded when customers feel positive emotions at the interface from the provision of convenience facilities that support medical services to the reduction of waiting time for patients, employees kindness, treatment, medication, and inspection. It is also confirmed that the demand for convenient and rapid use of hospitals is increasing in Vietnam. In addition, if customer satisfaction is increased through friendly medical staff's response, the intention of recommendation will be even greater.

The Effect of Perceive Service Quality of Local Content Production Policy on User Satisfaction, Reuse Intention, and Recommendation Intention (지역콘텐츠 제작지원 사업의 지각된 서비스 품질이 이용 만족, 재이용 의도, 추천 의도에 미치는 영향)

  • Kim, Sehwan
    • 지역과문화
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    • v.8 no.2
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    • pp.1-20
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    • 2021
  • This study analyzed the effect of perceived service quality for the local content production policy on the service user satisfaction, reuse intention, and the recommendation intention. First, reliability, responsiveness, and adequacy were identified as the service quality evaluation criteria of the local content production policy. Second, all of the quality evaluation criteria had a positive effect on the service user satisfaction. Third, responsiveness had a positive effect on reuse intention, and responsiveness and reliability had a positive effect on recommendation intention. Fourth, the service user satisfaction had a positive effect on the reuse intention and recommendation intention. Therefore, this study has the significance of presenting a theoretical model for the service quality evaluation of the local content production policy, and suggesting perspective for the improvement of the policy.

Patient experience and recommendation intention at specialty hospitals (전문병원 입원환자의 환자경험 및 추천의향)

  • Ji Eun Kim;Myung-ll Hahm;Kyounga Lee
    • Korea Journal of Hospital Management
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    • v.28 no.2
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    • pp.21-31
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    • 2023
  • Purposes: Patient experience is a tool to evaluate the process and results of medical services provided by medical institutions from the patient's point of view. Patient satisfaction surveys are a meaningful and essential source of information for improving quality in healthcare organizations. This study aims to provide basic data for improving the quality of medical service that patients can feel by analyzing the recommendation intention and satisfaction of inpatients in specialty hospitals. Methodology: The subjects of this study were 879 inpatients in 28 specialty hospitals in 14 designated fields. We conducted a telephone survey with a structured questionnaire on the satisfaction and recommendation intention for specialty hospitals. Findings: In inpatients, hospital satisfaction was higher in nursing care services and hospital satisfaction was low in physicians care services. The overall patient satisfaction score was 91.4(SD=11.9) out of 100, and the intention of recommendation was 92.0(SD=14.1) out of 100. The factors affecting patient experience were designated fields, sex, age, residential area, monthly household income, and perceived health status. Practical Implications: This study confirmed the high level of patient satisfaction and recommendation intention among inpatients of specialty hospitals. Patient satisfaction can be of great value to healthcare providers in recognizing and improving the quality of care, as well as predicting patients' willingness to revisit medical institutions. This study can be used to improve the quality of hospital care services in specialty hospitals rather than general and tertiary general hospitals.

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Hospital Choice: Which Type of Healthcare Service Quality Matter? (의료서비스 질적 요인에 따른 종합병원 선택에 관한 연구: SERVQUAL 모델 적용을 중심으로)

  • Lee, Ju-Yang;Lee, Sun Young;Cheong, Jong One
    • Korea Journal of Hospital Management
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    • v.22 no.3
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    • pp.31-45
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    • 2017
  • The research is to examine medical service quality factors affecting choice of hospital(revisiting intention, and recommendation) in large general hospitals based on the SERVQUAL model. The study have surveyed 400 respondents in Gangbuk-gu not having any tertiary hospital. The main results of the analyses indicate: 1) 'assurance' and 'empathy' of medical service are basically, positively affect revisiting intention and recommendation; 2) 'empathy' is the most important factor affecting revisiting intention; and 3) 'tangibility' significantly affects recommendation of general hospitals to other people. The study suggests that it is necessary to pay more attention on 'empathy' among SERVQUAL factors to increase satisfaction of patients and to find better ways of improving medical service quality.

Effects of Chinese Resident's Perceptions of Quality Attributes on Customer Satisfaction, Revisit Intention and Recommendation Intention at coffee Shops in Beijing, China (중국 북경직할시내 거주 중국인의 커피전문점 품질속성에 대한 인식이 고객만족도, 재방문의도 및 추천의도에 미치는 영향)

  • Li, Miao Miao;Lee, Young Eun;Youn, Do Kyung
    • Journal of the Korean Society of Food Culture
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    • v.32 no.5
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    • pp.421-436
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    • 2017
  • This study was conducted to examine the effects of Chinese perceptions of quality attributes on customer's satisfaction, revisit intention and recommendation intention for coffee shops in Beijing, China. Subjects of this study included 200 customers who had visited a coffee shop at least once during the last year. Statistical analyses were performed using SPSS v23.0 and AMOS v21.0. In this study, the majority of customers visited a coffee shop once or twice a week with friends. Respondents preferred tall-sized warm coffee in the store. The coffee shop quality attributes of were derived from five exploratory factors identified upon analysis of 30 observational variables. It was important to maintain and strengthen the quality attributes of coffee shops in this area because IPA(Importance Performance Analysis) analysis showed that "Doing great, keep it well" part was a desirable area because it had high importance and performance. Finally, path analysis revealed that customer satisfaction was influenced by employee attitude and affected revisit intention and recommendation intention.

A Study on the Relationship among Service Quality and Customer Satisfaction of Wedding Hall Restaurants, and Recommendation Intention - Focusing on the Moderating Effect of Wedding Hall and Hotel Image - (웨딩홀 레스토랑의 서비스 품질과 고객만족, 그리고 추천의도 간의 관계연구 - 웨딩홀 및 호텔 이미지의 조절효과를 중심으로 -)

  • Kim, Young Kyun
    • Culinary science and hospitality research
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    • v.22 no.5
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    • pp.252-266
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    • 2016
  • The purpose of this study is to verify a relationship among service quality and customer satisfaction of wedding hall restaurants, and recommendation intention, as well as the moderating effect of image of wedding halls and hotels on the relationship. A hierarchical regression analysis thorugh SPSS was conducted to test the model hypotheses. Research samples were collected from 331 customers of wedding hall restaurants and hotels located in Seoul. The findings and implications of the research can be summarized as follows. First, the employees, facilities and environment service, and convenience of wedding hall restaurants had a positive effect on customer satisfaction of wedding hall restaurants. Second, evidence suggested that service quality of wedding hall restaurants had a positive effect on recommendation intention. Third, while there was a negative moderating effect of image of wedding halls and hotels between food and employee service quality and customer satisfaction, a positive moderation effect of image of wedding halls and hotels was found. Fourth, there was a negative moderating effect between customer satisfaction and recommendation intention.

Empirical Study of Determinants Influencing Intention to Recommend Contents Based on Information System Success Model (콘텐츠 추천의도에 영향을 미치는 요인에 관한 연구: 정보시스템 성공모형을 중심으로)

  • Kim, Sanghyun;Park, Hyunsun
    • Knowledge Management Research
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    • v.21 no.4
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    • pp.175-193
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    • 2020
  • With the proliferation of information technology communication and smart device, the environment where contents are produced and distributed is changing. People can use the contents quickly and easily, and the content industry is attracting attention and creating newly added value by converging with other industries. Accordingly, there is a need for content-related companies to understand the quality of content perceived by users in order to succeed in content, and to use it strategically. Therefore, this study aims to examine the relationship between content quality factors, user satisfaction, and recommendation intention through empirical analysis based on an IS success model. The analysis was conducted using smartPLS3.0 based on a total of 301 survey responses. As a result of the study, it was found that content usefulness, accessible system quality, convenient system quality, service provider trust, and interaction had a significant effect on user's satisfaction. Perceived privacy protection had a significant effect on user satisfaction and recommendation intention. Lastly, it was found that user satisfaction had a significant effect on recommendation intention. The results of this study are expected to provide useful information and therefore content companies can understand about the quality perceived by users.