• 지적과 국토정보
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• 제50권2호
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• pp.101-115
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• 2020

자율주행 분야 글로벌 동향 파악 및 공간정보 서비스 활성화 방안 도출을 위해 빅데이터 분석방법을 활용하였다. 사용된 빅데이터는 뉴스기사와 특허문헌을 상호 연계하여 활용하고, 뉴스 기사를 통한 동향 분석, 특허문헌 정보를 활용한 기술 분석이 진행 되었다. 본 논문에서는 자율주행에 대한 주요 뉴스에서 토픽모델을 기반으로 한 LDA(Latent Dirichlet Allocation)를 활용하여 빅데이터화 하고 주요 단어를 추출하였다. 특허정보의 주요 단어를 기반으로 적용된 워드넷(WordNet)을 활용하여 공간정보와 연계성 분석, 글로벌 기술 동향 분석을 실시하고 공간정보 분야의 동향 분석 및 예측을 실시하였다. 본 논문에서는 주요뉴스와 특허문헌 정보를 기반으로 한 빅데이터 분석방법으로 자율주행 분야와 공간정보와의 연계성 분석을 통하여 최신 동향과 미래를 예측하는 방법을 제시한다. 빅데이터 분석으로 도출된 자율주행 분야 공간정보의 글로벌 동향은 플랫폼 얼라이언스, 비지니스 파트너쉽, 기업 인수합병, 합작회사 설립, 표준화 및 기술개발로 도출되었다.

• 해양환경안전학회지
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• 제29권3호
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• pp.281-287
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• 2023

Establishing a ship's passage plan is an essential step before it starts to sail. The research related to the automatic generation of ship passage plans is attracting attention because of the development of maritime autonomous surface ships. In coastal water navigation, the land, islands, and navigation rules need to be considered. From the path planning algorithm's perspective, a ship's passage planning is a global path-planning problem. Because conventional global path-planning methods such as Dijkstra and A^* are time-consuming owing to the processes such as environmental modeling, it is difficult to modify a ship's passage plan during a voyage. Therefore, the D^* algorithm was used to address these problems. The starting point was near Busan New Port, and the destination was Ulsan Port. The navigable area was designated based on a combination of the ship trajectory data and grid in the target area. The initial path plan generated using the D^* algorithm was analyzed with 33 waypoints and a total distance of 113.946 km. The final path plan was simplified using the Douglas-Peucker algorithm. It was analyzed with a total distance of 110.156 km and 10 waypoints. This is approximately 3.05% less than the total distance of the initial passage plan of the ship. This study demonstrated the feasibility of automatically generating a path plan in coastal navigation for maritime autonomous surface ships using the D^* algorithm. Using the shortest distance-based path planning algorithm, the ship's fuel consumption and sailing time can be minimized.

• 농촌계획
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• 제27권4호
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• pp.13-24
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• 2021

This study used big data to analyze visitors' experiences in Fishing Experience Recreation Village. Through the portal site posting data for the past six years, the experience of visiting Fishing Experience Villages in Baekmi and Susan was analyzed. The analysis method used Text mining and Social Network Analysis which are Big data analysis techniques. Data was collected using Textom, and experience keywords were extracted by analyzing the frequency and importance of experience texts. Afterwards, the characteristics of the experience of visiting the Fishing Experience Village were identified through the analysis of the interaction between the experience keywords using 'U cinet 6.0' and 'NetDraw'. First, through TF and TF-IDF values, keywords such as "Gungpyeong Port", "Susan Port", and "Yacht Marina" that refer to the name of the port and the port facilities appeared at the top. This is interpreted as the name of the port has the greatest impact on the recognition of the Fishing Experience Villages, and visitors showed a lot of interest in the port facilities. Second, focusing on the unique elements of port facilities and fishing villages such as "mud flat experience", "fishing village experience", "Gungpyeong port", "Susan port", "yacht marina", and "beach" through the values of degree, closeness, and betweenness centrality interpreted as having an interaction with various experiences. Third, through the CONCOR analysis, it was confirmed that the visitor's experience was focused on the dynamic behavior, the experience program had the greatest influence on the experience of the visitor, and that the experience of the static and the dynamic behavior was relatively balanced. In conclusion, the experience of visitors in the Fishing Experience Villages is most affected by the environment of the fishing village such as the tidal flats and the coast and the fishing village experience program conducted at the fishing port facilities. In particular, it was found that fishing port facilities such as ports and marinas had a high influence on the awareness of the Fishing Experience Villages. Therefore, it is important to actively utilize the scenery and environment unique to fishing villages in order to revitalize the Fishing Experience Villages experience and improve the quality of the visitor experience. This study is significant in that it studied visitors' experiences in fishing village recreation villages using big data and derived the connection between fishing village and fishing village infrastructure in fishing village experience tourism.

• 디지털융복합연구
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• 제18권2호
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• pp.367-376
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• 2020

최근 신 소비시장 트렌드에 관한 통계에 따르면 그 중심에 '나홀로 소비' 가 있다. 본 연구는 특정 사회적 트렌드는 그것에 대한 배경을 형성하고 있는 사회와 지역성, 문화, 경제, 심리 등 삶의 다양한 측면들을 통합적인 시각으로 해석하는 것이 중요하다는 측면에서, 수많은 대중의 의견이 수렴되는 신 소비시장 관련 리서치 데이터에서 추출한 '나홀로 소비' 연관어를 분석 키워드로 설정하였고, 분석솔루션 중 하나인 소셜메트릭스TM를 통한 오피니언 분석(Opinion Analisys) 기법을 활용하여 신 소비시장 트렌드에 관한 연구를 진행하였다. 신 소비시장 고찰결과 '혼밥', '혼술', '혼영'이라는 키워드가 도출되었고 이를 활용하여 신 소비시장 트렌드를 분석하였다. 나홀로 소비는 기존 소비자 트렌드 가운데 글로벌 경제위기 이후에 인구변화와 함께 야기된 필연적 새로운 소비 트렌드가 되었고 연관어에 따른 긍, 부정 감정분석의 결과도 대체로 긍정적인 데이터 결과를 확인할 수 있었으며, 이 소비 트렌드는 시대를 반영하는 새로운 트렌드로서의 중요성이 더욱 강화될 것이다. 향후 소셜 빅데이터에 의한 트렌드 분석이 본 연구보다 다양한 분석 도구를 통해 실행된다면 신 소비시장에 관한 새롭고 가치 있는 유통전략 및 기획에 도움이 될 것이다.

• 산업경영시스템학회지
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• 제41권1호
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• pp.1-10
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• 2018

Current evaluation practices for IT projects suffer from several problems, which include the difficulty of self-explanation for the evaluation results and the improperly scaled scoring system. This study aims to develop a methodology of opinion mining to extract key factors for the causal relationship analysis and to assess the feasibility of quantifying evaluation scores from text comments using opinion mining based on big data analysis. The research has been performed on the domain of publicly procured IT proposal evaluations, which are managed by the National Procurement Service. Around 10,000 sets of comments and evaluation scores have been gathered, most of which are in the form of digital data but some in paper documents. Thus, more refined form of text has been prepared using various tools. From them, keywords for factors and polarity indicators have been extracted, and experts on this domain have selected some of them as the key factors and indicators. Also, those keywords have been grouped into into dimensions. Causal relationship between keyword or dimension factors and evaluation scores were analyzed based on the two research models-a keyword-based model and a dimension-based model, using the correlation analysis and the regression analysis. The results show that keyword factors such as planning, strategy, technology and PM mostly affects the evaluation result and that the keywords are more appropriate forms of factors for causal relationship analysis than the dimensions. Also, it can be asserted from the analysis that evaluation scores can be composed or calculated from the unstructured text comments using opinion mining, when a comprehensive dictionary of polarity for Korean language can be provided. This study may contribute to the area of big data-based evaluation methodology and opinion mining for IT proposal evaluation, leading to a more reliable and effective IT proposal evaluation method.

• 한국인터넷방송통신학회논문지
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• 제19권1호
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• pp.171-178
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• 2019

한국의 조선 산업은 대내외 환경 변화로 인해 심각한 위기 상황에 처해 있다. 이 위기를 극복하기 위해서, 선박 신수요 예측을 통한 제품 및 기술의 선제적 개발이 필요하다. 본 연구의 목표는 선박 신수요 예측을 위해 선박 빅데이터에 기반한 인공지능 알고리즘의 개발이다. 본 연구에서는 선박 수요 예측에 특화된 빅데이터 분석 플랫폼을 개발하고 데이터 분석을 통한 선박 신수요 예측 결과를 신제품 기획/개발에 활용하고자 한다. 이를 통해 장비 및 기자재 제조업체를 위한 지속 가능한 신사업 모델 개발로 조선소 및 선박 기자재 업체에 대한 신성장동력을 창출할 수 있을 것이다. 또한 조선 업체들은 측정 가능한 성과를 기반으로 비즈니스 사례를 창출하고 시장 지향적 인 제품과 서비스를 계획하며 높은 시장 파괴력을 가진 혁신을 지속적으로 달성 할 수 있을 것으로 기대된다.

• 한국컴퓨터정보학회논문지
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• 제27권5호
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• pp.117-125
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• 2022

최근 여행에 대한 관심이 높아지면서, 번거로운 여행 일정을 대신 수립해주는 여행 일정 추천 서비스에 대한 연구가 활발히 진행되고 있다. 여행 일정 추천에 있어 가장 중요하면서도 공통적으로 제시되는 목표는 여행 목적지 근처의 인기 관광지를 포함한 최단 거리 여행 경로를 제공하는 것이다. 다수의 기존 연구에서는 개인 맞춤형 스케줄 제공에 초점을 맞추었으며, 사용자의 여행 이동 경로 이력이나 SNS 리뷰가 존재하지 않을 경우 설문 조사가 필요한 문제점이 있었다. 또한 최단 거리를 계산할 때 발생할 수 있는 현실적인 문제점도 명확히 지적되지 않았다. 이와 관련하여, 본 논문에서는 소셜 빅데이터를 활용하여 인기 관광지를 알아내기 위한 정량화된 방법을 소개하고, 최단 거리 알고리즘 적용시 발생할 수 있는 문제점과 이를 해결하기 위한 휴리스틱 알고리즘을 함께 제시한다. 제안 방법을 검증하기 위해, 경상남도를 대상으로 63,000여 개의 플레이스 정보를 수집하고 빅데이터 분석을 수행했으며, 실험을 통해 제안한 휴리스틱 스케줄링 알고리즘이 실제 데이터 상에서 실시간 처리가 가능함을 확인하였다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 추계 학술논문 발표대회
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• pp.50-51
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• 2019

Globally, South Korea is a country that has a lot of $CO_2$ emissions and has steadily increased its total greenhouse gas emissions since the 1990s. With the recent implementation of the carbon emission trading system in Korea, the importance of calculating $CO_2$ emissions of construction equipment is increasing, hence the need for accurate calculation of environmental penalties through allocating carbon emission rights. This study presents a methodology to predict the price of carbon credits using big data analysis method. This methodology is based on correlating and regression analysis of trends in carbon emission prices and search volumes. This study aims to support faster and more accurate budget calculations in the planning of the construction process based on the predicted price of carbon emission rights.

• 인터넷정보학회논문지
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• 제24권4호
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• pp.65-76
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• 2023

This paper identifies the aspects of living environment elements (PM^2.5, PM¹⁰, Noise) throughout Seoul and the urban characteristics that affect them by utilizing the big data of the S-Dot sensors in Seoul, which has recently become a hot topic. In other words, it proposes a big data based urban computing research methodology and research direction to confirm the relationship between urban characteristics and living environments that directly affect citizens. The temporal range is from 2020 to 2021, which is the available range of time series data for S-Dot sensors, and the spatial range is throughout Seoul by 500mX500m GRID. First of all, as part of analyzing specific living environment patterns, simple trends through EDA are identified, and cluster analysis is conducted based on the trends. After that, in order to derive specific urban planning factors of each cluster, basic statistical analysis such as ANOVA, OLS and MNL analysis were conducted to confirm more specific characteristics. As a result of this study, cluster patterns of environment elements(PM^2.5, PM¹⁰, Noise) and urban factors that affect them are identified, and there are areas with relatively high or low long-term living environment values compared to other regions. The results of this study are believed to be a reference for urban planning management measures for vulnerable areas of living environment, and it is expected to be an exploratory study that can provide directions to urban computing field, especially related to environmental data in the future.

• 한국농촌건축학회논문집
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• 제22권4호
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• pp.43-50
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• 2020

The purpose of this study is to extract deficiency areas as basic data of policies and projects in the future Living SOC introduction and planning. In order to extract living SOC deficient areas, accessibility data for living SOC and density data for main users by facility were overlapped, focusing on the living SOC indicators presented in the National Urban Regeneration Basic Policy. According to the analysis of accessibility of the Iksan-si Living SOC, the gap between deficiency in urban and township areas was large in common with the accessibility of the village and local base units. As a result of overlapping life SOC accessibility data and density data analysis of the main users by facility, areas where accessibility is weak but not inhabited by the main users of each facility were extracted. It is meaningful that more accurate deficient areas can be extracted by simultaneously utilizing the density distribution of the main users, rather than simply accessing the facilities.