• Proceedings of the Korea Information Processing Society Conference
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• 2021.11a
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• pp.935-938
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• 2021

데이터 베이스에 저장된 사용자의 위치, 성격정보를 자동으로 받아서 머신러닝으로 회귀분석하여 방문 장소에 대한 선호도를 예측한다. 사람의 성격 요소로는 BFF 와 다른 기본 요소들을 사용하였다. 이를 위하여 자동화된 시스템을 구성하였고 위치 방문 선호도를 예측하기 위한 머신러닝 기법으로는 앙상블기법을 사용하였다. 예측 결과는 장소 카테고리별로 방문 선호도가 나타나고 이를 사용자 별로 나누어 저장할 예정이다. 데이터의 양이 많아지면서 나타나는 문제들을 해결하여 향후 연구에 도움이 될 것이다.

• Proceedings of the Korea Contents Association Conference
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• 2015.05a
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• pp.249-250
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• 2015

대구에 소재한 '김광석다시그리기길'의 인기요인을 분석해보면 2015년 여행 트렌드는 일상과 연결되어 있다고 볼 수 있다. 사람들의 감성을 자극해 위안을 주고, 시간과 비용 문제로 인해 근교에 위치한 여행지를 선호하고 있다. 그리고 현지인들의 문화를 엿볼 수 있고 일상을 교류할 수 있는 곳임과 동시에 혼자서도 쉽게 할 수 있는 여행을 선호하고 있다. 일상에서 오는 소박함으로부터 사람들은 여행의 만족을 느끼고 있다고 할 수 있다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.6
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• pp.1625-1631
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• 2008

This paper is going to research about RFID real time position finder technology and the offline shopping mall's client shop list managed by the RF fused Tag USB memory to analyze out the output of the data for providing real time interactive customer intelligence commodity system.

• Journal of Intelligence and Information Systems
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• v.14 no.4
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• pp.201-216
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• 2008

Nowadays various new items are available, but limitation of searching effort makes it difficult for customers to search new items which they want to purchase. Therefore new item providers and customers need recommendation systems which recommend right items for right customers. In this research, we focus on the new item recommendation issue, and suggest preference boundary- based procedures which extend traditional content-based algorithm. We introduce the concept of preference boundary in a feature space to recommend new items. To find the preference boundary of a target customer, we suggest heuristic algorithms to find the centroid and the radius of preference boundary. To evaluate the performance of suggested procedures, we have conducted several experiments using real mobile transaction data and analyzed their results. Some discussions about our experimental results are also given with a further research area.

• Korean journal of applied entomology
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• v.42 no.4
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• pp.301-305
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• 2003

This study investigated the ecological characteristics of Frankliniella occidentalis on four horticultural crops. On red pepper leaves, larval developmental period and survival rate of F. occidentalis were 6.4 days and 67%, respectively. While adult female lived longer on cucumber leaves as long as 16 days, on Petal lived 8.1 days. F. occidentalis adult female preferred tomato to eggplant, cucumber and red pepper, and higher number of hatched larva were from leaves of middle part of egg-plant compared with those from other parts. F. occidentalis adult female fed preferably on petal compared with leaves and Petals of eggplant, and among petals of four tested plants, the most preference was those of red pepper.

• Journal of Korean Society for Geospatial Information Science
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• v.20 no.4
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• pp.67-75
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• 2012

For the last few years, LBS has attracted considerable attention from many industries and societies as a result of propagated smart devices. LBS has a high utilization of mobile users as it uses user positions as a significant factor. Current LBS has only taken user position into account and it makes some limits. So, it is necessarily suggested that support for personalized services which consider user's motion, traffic condition, weather condition, time, personal information and preferences that have a huge impact on the accuracy. The purpose of this study is to design the inference systems with user's motion, preferences and schedules and provide users with the personalized information. To achieve this, Movement Ontology, User Profile Ontology, Schedule Ontology and Work Ontology should be constructed and based on this, smart applications were developed. Developed applications induced appropriately recommended results according to user's preference, motion and directions.

• Journal of the Korean association of regional geographers
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• v.12 no.6
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• pp.733-747
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• 2006

This paper aims to grasp the characteristics of the cognition and preference on the continents, their relationship, and then each nation's location and direction in case of Korean high school students. First, there exists difference of cognition by six continents as well as by gender and experience of foreign visit among the students. The students have somewhat different preference by each continent, which was affected by gender and experience of foreign visit as well. Second, the cognition of the students on each nation's location showed a positive relation with that on the continents, which was decided by adjacent distance with Korea. The empirical results showed that the higher the gaps of latitude over longitude are, the lower the cognition of the students on direction among nations are. Moreover there are significant gaps by gender and experience of foreign visit in orientation ability. As a result, the geography education may have to be develop the high school students' balanced cognition ability in relation to continents and nations.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.04a
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• pp.535-538
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• 2009

모바일 단말기 사용자 수의 증가와 위치기반 서비스 기술의 발달로 위치 정보를 활용한 다양한 위치 정보 서비스가 등장하고 있다. 친구들과 약속을 정하는 일은 빈번하게 일어난다. 약속을 정하기 위해서는 모든 친구에게 연락을 해야 하고 각자 선호하는 장소가 다르기 때문에 모든 친구들이 만족할 만한 최적의 장소를 찾기가 어렵다. 본 논문에서는 모바일 환경에서 친구의 위치를 파악하고 사용자와 친구의 성향을 파악하기 위해 협업 필터링과 인구통계학적 정보를 사용하였고, 약속 장소를 선정하기 위해 사용자와 친구의 위치를 기반으로 후보 영역을 선택하여 약속 장소와 시간을 추천하는 서비스를 제공함으로써 약속을 맺기 위한 절차를 간소화 할 뿐 아니라 사용자와 친구의 성향에 맞는 약속 장소를 추천하여 사용자와 친구가 만족 할 수 있는 약속을 형성할 수 있도록 하는 약속 장소, 시간 추천 서비스 시스템을 설계하였다.

• The Journal of the Korea Contents Association
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• v.11 no.10
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• pp.165-175
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• 2011

This study aims to analyze and compare the difference of preference to realistic and fantastic expressions presented in the illustrations of children's picture books. The subject of this study is set for 52 seven-year-old kindergarten students, including 26 boys and 26 girls, in Cheonan. Two times of researches on their preferences were made on the basis of data collection through individual interviews and self-regulatory questionnaires. A children's picture book, which best demonstrates both realistic and fantastic expressions, was selected as a research tool for such questionnaire from the ones produced and printed within Korea, which either are listed in the Recommended Book List of Children's Book Research Association or received any international award. The result shows that both boys and girls prefer fantastic expressions to realistic ones. It was also found that girls tend to prefer realistic expressions that the boys do. Nevertheless, there definitely was a limitation in thorough analysis by region or age, as they tended to show different responses when they were provided with a picture book with similar theme and story, but different form of expression.

• Journal of Navigation and Port Research
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• v.35 no.8
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• pp.657-665
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• 2011

This study deals with an integrated problem for deciding sequencing and storage location of export containers together at its receiving operation in the container terminal with a perpendicular layout. The preferred storage location of an export container varies with the priority of the corresponding loading operation and the waiting time of an external truck depends on its storage time. This paper proposes the mixed integer programming model considering the expected arrival time and expected finish time of an external truck and the preferred storage location for its loading operation. And we suggest the heuristic algorithm based on a simulated annealing algorithm for real world adaption. We compare the heuristic algorithm with the optimum model in terms of the computation times and total cost and the performance of the heuristic algorithm is analyzed through a numerical experiment.