• Database Research
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• v.34 no.3
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• pp.86-98
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• 2018

Point-of-Interest(POI) recommendation systems suggest the most interesting POIs to users considering the current location and time. With the rapid development of smartphones, internet-of-things, and location-based social networks, it has become feasible to accumulate huge amounts of user POI visits. Therefore, instant recommendation of interesting POIs at a given time is being widely recognized as important. To increase the performance of POI recommendation systems, several studies extracting users' POI sequential preference from POI check-in data, which is intended for implicit feedback, have been suggested. However, when constructing a model utilizing sequential preference, the model encounters possibility of data distortion because of a low number of observed check-ins which is attributed to intensified data sparsity. This paper suggests refinement of temporal intervals based on data confidence. When building a POI recommendation system using temporal intervals to model the POI sequential preference of users, our methodology reduces potential data distortion in the dataset and thus increases the performance of the recommendation system. We verify our model's effectiveness through the evaluation with the Foursquare and Gowalla dataset.

• Proceedings of the Korea Information Processing Society Conference
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• 2014.11a
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• pp.380-383
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• 2014

사람의 성격 분석에 따라 그 사람의 이동패턴을 알 수 있다. 따라서 성격 데이터를 이용하면, 사람의 행동 패턴을 유추해 낼 수 있다. 사람의 행동 패턴은 주로 그 사람이 선호하는 장소의 집합으로 규정 할 수 있다. 본 논문에서는 사람의 성격과 장소 데이터 사이의 상관관계를 알아보고자 한다. 포스퀘어에서 얻어진 장소정보와 성격요인 분석을 통해 얻어진 사람 성격과의 상관관계를 파악하기 위한 기법으로 회귀분석을 사용했다. 장소정보는 그 장소에 해당하는 업종으로 변환되었다. 위치 데이터와 업종 분류표와의 분석을 어떻게 적용 하였는지 설명하고, 회귀분석을 통해서 성격 데이터와 업종 분류 데이터를 분석한다.

• Journal of the Korean Institute of Landscape Architecture
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• v.45 no.1
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• pp.105-116
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• 2017

Murals in villages revitalize communities and spaces, and are economically efficient. Central and local governments are therefore actively undertaking Mural Village Projects but there are some issues and concerns about the projects for the provision of uniformed landscapes for the regions that are the result of a short-term completion of projects, and instead of cohesion, cause destruction of place identities. In addition, the problem of sustainable landscape management that is the result of low community involvement can be pointed out because the murals are products of government-led projects. The study covered the context of landscape and space change processes from a critical perspective, and focused on Ihwa-dong Mural Village, which is considered the first mural village in Korea and has begun to undergo drastic changes due to attention received from media. The purposes of this study are as follows. First, the study provides data about difference of place identity perception and landscape preference between residents and tourists in Ihwa-dong Mural Village. Second, this paper evaluates the current Mural Village Projects and finds alternative directions to improve the projects by using these data. This paper analyzed tourist hot spots in Ihwa-dong Mural Village by using SNS analysis, a field study and focus group interviews. The difference of place identity perception and landscape preference was examined among three groups: residents, new residents who are invited by Mural Village Projects, and tourists. This study showed that many tourists are focused on landscape areas that were not intentionally constructed projects. In addition, the locations of preferred landscapes and stores overlapped. Meanwhile, using qualitative data analysis, it was found that residents perceived the area as being an under-privileged location, while the murals, a non-daily landscape, largely affected place identity perception of new residents and tourists. For landscape preference, tourists preferred outdoor rest areas, while new residents and residents preferred less. Additionally, new residents and tourists preferred an area's night view while residents made no mention of this. Related to the direction of the projects, three groups showed their dependence on the government. This empirical study is significant from a participatory design perspective and in analyzing the issues for mural villages' landscapes, which are spreading across the nation and proceeding without criticism in urban regeneration. Implications for urban planners and suggestions for the future projects are given.

• Journal of the Korean Institute of Landscape Architecture
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• v.22 no.3
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• pp.13-27
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• 1994

본 논문에서는 1) 지금까지 이루어진 광장선호연구를 토대로 광장 설계시 이용될 수 있는 12가지 설계지침을 제시하며, 2) 광장선호를 진화 이론의 틀에서 분석한 사례연구를 소개하고 있다. 12가지 광장설계지침은 1970년부터 지금까지 이루어진 광장형태연구들로부터 제시되었으며, 광장 의 위치, 규모, 시각적 특질, 활동, 미기후, 경계설계, 부공간설계, 동선설계, 식재설계, 휴식공간설계, 음식, 조형물설계 등에 관련한 고려사항을 포함한 다. 광장선호를 진화이론에서 분석한 사례연구는 Appleton의 조망과 은신 이론(prospect and refuge theory)을 분석의 틀로 이용하며, 3개 광장에서 의 이용행태 관찰을 바탕으로 한다. 구체적으로 각 광장의 앉는 장소 (sitting area)가 가지고 있는 조망(prospect) 특성과 은신(refuge)특성을 분석하고 이러한 특성들이 사람들의 선택선호도(앉는 장소로서의)와 관련 성이 있는가를 살펴보고 있다. 연구결과를 보면 광장의 성격이 완전히 공 공적(public)일 경우만이 전반적인 선호행태가 조망(prospect)과 은신 (refuge) 특질과 관련되고 반공공적(semi-public)이나 사적(private)일 경우 에는 Appleton의 이론으로 선호행태 설명이 불가능함을 알 수 있다.

• Journal of the Korean Institute of Landscape Architecture
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• v.45 no.6
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• pp.126-136
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• 2017

Gardeners have a desire to not only enjoy a garden but to create the garden themselves and play the role of garden designer. However, they express a great difficulty in gardening activities such as planting and managing plants, the main materials of the garden, due to lack of expertise. Therefore, in order to encourage hobby gardening activities, it is necessary to understand the preferences of the gardeners so that they can easily experience and create a garden, and to provide information on gardening know-how and preferred plants according to places given high preference. This study analyzed the preference for places and plants characteristics according to the purpose of creating a garden. To this end, a questionnaire survey was conducted with visitors to the Korea Landscape and Garden Expo, expected to have been attended primarily by gardening enthusiasts. As a result, gardeners were divided into three groups: appraisal - purposed type, multifunctional type, and participation - purposed type. The group of appraisal purposed type preferred porches and terraces, and private home front yards as well as favored indoor places rather than outdoor places compared with other types. In selecting plants, they prefer plants that can be easily managed in an indoor environment and appreciate natural colors through the colors of flowers and leaves. The multifunctional type group preferred a private home front yard as a garden creation space. Compared with the other types, it showed a high preference for 'unoccupied land in urban housing' and 'community garden' and was analyzed as a group having a high understanding of garden activities. In selecting plants, this group preferred fruit trees or productive plants such as homegrown crops. The participation purposed type group preferred porches and terraces as well as private home front yards as a gardening space. For plants, they preferred plants that are easy to manage. It is meaningful that this study provided preferences for places and plant characteristics according to the creative purpose of the gardener and provided basic data for selecting the place and the plant characteristics of the garden according to the gardener's type.

• The Journal of the Korea Contents Association
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• v.18 no.1
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• pp.64-75
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• 2018

With the development of location-aware technologies and the activation of smart phones, location based social networks(LBSN) have been activated to allow people to easily share their location. In particular, studies on recommending the location of user interests by using the user check-in function in LBSN have been actively conducted. In this paper, we propose a location recommendation scheme considering time and user activities in LBSN. The proposed scheme considers user preference changes over time, local experts, and user interest in rare places. In other words, it uses the check-in history over time and distinguishes the user activity area to identify local experts. It also considers a rare place to give a weight to the user preferred place. It is shown through various performance evaluations that the proposed scheme outperforms the existing schemes.

• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 2023.04a
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• pp.43-44
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• 2023

• Journal of the Korea Fashion and Costume Design Association
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• v.17 no.1
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• pp.25-37
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• 2015

본 연구의 목적은 해외여행 동기에 따라 여행자들의 집단을 나누고 각 집단별로 해외여행시 구매하는 상품이나 이용 매장의 특성을 비교하는데 있다. 문헌연구를 통해 여행동기와 구매상품의 종류와 속성, 쇼핑장소의 유형과 속성에 대한 주요 문항들을 추출하였다. 20-50대 해외여행 경험자 431명을 대상으로 설문조사를 실시하였고 K-평균 군집분석을 통해, 적극적 집단, 소극적 집단, 자연 쾌락추구 집단, 가족 발견추구 집단의 4개의 군집이 확인되었다. 적극적인 여행자들은 해외에서 구매하는 모든 상품종류에 대해 가장 높은 관심을 보였으며 다른 세 집단보다 유의하게 차이가 있었다. 특히 소극적인 여행자나 자연 쾌락추구 여행자들보다 패션 사치품이나 기념품 구매를 중요하게 생각하는 것으로 나타났다. 또한 상품 속성에서 디자인과 명성, 실용성, 가격과 품질 등의 요인들을 중요하게 고려하였다. 구매 장소 측면에서는 적극적 집단은 지역 시장, 패션매장, 선물매장 순으로 선호하였으며 소극적인 여행자들은 패션매장을 더 선호하는 것으로 나타났다. 구매장소 속성의 중요도는 편의성, 디스플레이, 매장위치 및 판촉활동 순으로 중요시되었으며 적극적인 여행자들은 다른 세 집단 여행자들보다 매장 편의성에 대한 관심이 유의하게 높았다. 가족 발견중심 여행자와 자연 쾌락추구 여행자 집단은 쇼핑행동이 비슷하거나 일부 요인에서만 차이가 있었다. 소극적 여행자들은 나머지 세 집단과 구별되게 모든 쇼핑행동에 대한 관심이 낮았다. 여행동기에 근거한 시장세분화는 서로 다른 쇼핑행동을 예측할 수 있는 변별력이 있음을 보여주었다.

• Journal of the Korean Geographical Society
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• v.31 no.4
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• pp.699-715
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• 1996

This paper examines the cross-sectional development of children's conception of place. Previous research by Piaget and Weil, Jahoda, Daggs has questioned how young children develop the ablity to comprehend place. Oral interview and graphic test were made vy the children at the age of 5-14, in order to attain information on their knowledge, understanding and feeling about place. These data were used ti indentify developmental stages through cluster analysis. The results suggest that young children's conception of place develops with an identifiable 4 stages. There is no significant difference in development of conception of place between the 2nd year of kindergarten and the 1st year of elementary school, or the between the 5th, 6th year of elementary school and 1st, 2nd year of middle school. Rather, the 4th year of elementary school is an important and crucial truning point in the development of children's conception of place. It is concluded that children's conception of place develops in line with Piaget's general cognitive developmental theory in which the pre-conceptual stage ends at age 7 and the concrete-operation stage starts at age 11 to 12.

• 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.