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유전알고리즘을 이용한 사용자 평가 기반 여행계획 모델링
권순호(Sun-Ho Kwon),박승민(Seung-Min Park) 한국지능시스템학회 2021 한국지능시스템학회논문지 Vol.31 No.4
최근 교통 기술의 발달로 인해 세계 관광시장이 커지고 있으며, 인터넷의 발달로 인해 자유여행이 증가하고 있다. 이런 추세에 따라 여행계획을 추천해주는 시스템들이 존재하지만, 기존 시스템은 사용자들의 일정과 선호도를 반영하지 않고 추천을 하여 사용자들의 만족도가 떨어지는 경우가 많다. 본 논문에서는 사용자 평가를 기반으로 하여 사용자들의 선호도를 바탕으로 유전알고리즘을 이용하여 일정에 맞는 여행계획을 모델링 해주는 시스템을 제안한다. 일반적인 여행계획 모델링 시스템과는 다르게 여행지간의 이동 시간, 여행지를 둘러보는데 걸리는 시간 등을 적합도 함수에 반영하였다. 제안된 시스템을 통해 사용자에게 다양한 여행계획을 제공해주고 여행의 질과 만족도를 높여줄 것으로 기대한다. In the 4th industrial revolution era, the global tourism market is growing with the development of transportation technology, and free travel is increasing with the development of the Internet. This system is recommended to travel plans based on this trend, but existing systems are many cases that do not reflect the user’s schedule and preferences, the lower the level of satisfaction. In this paper, we proposed a system based on user evaluation to model a scheduled travel plan using genetic algorithms based on users’ preferences. Unlike typical travel planning modeling systems, we reflect the travel time between travel destinations, the time it takes to tour destinations, and so on in the goodness-of-fit function. We expect the proposed system to provide users with a variety of travel plans and improve the quality and satisfaction of their trips.
한달선,권순호,Han, Dal-Sun,Kwon, Soon-Ho 대한예방의학회 1990 예방의학회지 Vol.23 No.3
The utilization of medical care services has been partly regionalized with the implementation of referral requirement by the government since July 1, 1989 when the health insurance coverage was extended to all the people. For the purpose of regionalization, the whole country has been primarily divided into tertiary care regions, and each of them again into secondary care regions. This study investigates the self-sufficiency for in-patient care services of secondary care regions focusing on why it varies among the regions. In doing so, analysis is performed to examine a model which embodies three sets of hypotheses as follows : 1) The regional self-sufficiency for medical care services would be subject to direct influences of regional characteristics, amount of available services and structural properties of regional medical care system ; 2) The regional characteristics would have indirect effects on the self-sufficiency which are mediated by medical care services ; and 3) The amount of available services would indirectly affect the self-sufficiency by influencing the structure of regional medical care system. The results of analysis were generally consistent with the model. The findings have some practical implications. The regional self-sufficiency for medical care services partly depends upon basic properties of each region which cannot be changed in a short period of time. Thus the self-sufficiency for medical care services can be improved mainly by health policy measures. In some of the regions the self-sufficiency for in-patient care services was much higher or lower than can be predicted from the bed-population ratio. Indication is that the allocation of health resources should be made considering a variety of factors bearing upon the supply of and demand for health care ; not on the basis of just a single criterion like the availability. The self-sufficiency of a certain region is related to not only its own characterstics but also the characteristics of neighboring regions. Therefore, attention should be also directed to the inter-regional relationships in health care when the needs for investment of health resources in a region are assessed. However, it should be noted that this study used the data collected before the referral requirement was imposed. A replication of this analysis using recent data would provide an evaluation of the impact on the self-sufficiency of the referral requirement as well as a confirmation of the findings of this study.
지역단위 고혈압사업에 있어서 환자의 치료순응도와 결정요인
김지,민경복,권순호,한달선,배상수,Kim, Jee,Min, Kyung-Bok,Kwon, Soon-Ho,Han, Dal-Sun,Bae, Sang-Soo 대한예방의학회 1999 예방의학회지 Vol.32 No.2
Objectives: To investigate compliance of hypertension patients using modified Theory of Reasoned Action(TRA). Methods: The data were collected for 7-12 April 1997, by interviewing 190 Hypertension patients in Hwachon, Kangwon-do. The analytical techniques employed include contingency table analysis and logit analysis. Results: 15.1% of patients were unaware of the fact that he/she has hypertension and 11.2% did not know that he/she should take drug. 20.8% of patients took drug continuously, 20.1% had drug intermittently, and 53.1% had never have treatment. In the contingency table analysis, several variables were found to be significantly related to patient compliance. They included variables for attitude towards the consequences of taking drugs, normative beliefs, systolic BP at the enrollment, knowledge of how to take hypertensive drugs, variables for general health behavior and experience with having health worker's home visit. The logit analysis was performed by two steps. first step uses experience with drug treatment of hypertension as the dependent variable, and second step uses continuity of treatment. Included in the predictors that are significantly related to the former analysis are subjected norms produced by combining normative beliefs and motivation to comply, knowledge of how to take hypertensive drugs, and opinion about natural recovery of diseases. The only significant determinant of continuous treatment was knowledge of how to take hypertensive drugs. Conclusions: The results of analysis suggest the usefulness of TRA as a framework for the study of compliance of hypertensive patients. The findings have some practical implication as well. One is that efforts for enhancing compliance should be directed not only patients but also to other persons influencing patient's attitude and behavior. It also suggest that correct understanding of hypertension treatment is essential to perform the appropriate patient role.