• Title/Summary/Keyword: analytic hierachy process

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A Research on Inference Method in Fuzzy Production System (퍼지 프러덕션시스템의 추론방법에 관한 연구)

  • 송수섭
    • Journal of Intelligence and Information Systems
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    • v.2 no.2
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    • pp.1-15
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    • 1996
  • 전문가의 지식을 지식베이스화하여 의사결정지원시스템으로 사용하려는 노력이 증대하고 있다. 특히 투자의사결정과 같은 원인결과의 관계를 명확히 규정할 수 없는 복작한 영역에서 전문가의 지식베이스는 비전문가의 의사결정에 중요한 조언을 제공할 수 있다. 불확실한 지식을 지식베이스화하는 한 방법으로 퍼지프러덕션시스템이 널리 사용되고 있다. 주식시장과 같은 동태적인 시스템에서 어떤 정보의 중요성은 상황에 따라 변화하는데 이를 정태적인 프로덕션시스템의 규칙으로 지식베이스화하는 것은 불가능하다. 그러나 추론을 수행하는 과정에서 수행당시 각 정보의 중요도에 부응하는 가중치를 부여하여 평가함으로써 정태적인 지식베이스에 동태적인 실제시스템의 특성을 반영할 수 있다. 이는 가중치가 높은 정보에 해당하는 조건명제의 충족정도가 해당규칙의 전체평가결과에 더욱 중요하게 반영되게 하여 좀더 현실성 있는 추론 결과를 얻게 한다. AHP(Analytic Hierachy Process) 방법에 의하여 얻어진 정보의 상대적 중요도에 따른 가중치 (w)를 해당 정보와 조건명제의 합치정도(Degree of Match : DM)에 (DM)w 의 형식으로 적용함으로써 퍼지프러덕션시스템에서 정보의 중요도를 반영하여 프러덕션규칙을 평가하는 방법을 제시한다.

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A Study of The Problem of Implementation of Analytic Hierachy Process for Real-Time Robot Control (로봇의 실시간 제어에 대한 계층적 분석방법의 실현성에 대한 연구)

  • 진현수
    • Proceedings of the KAIS Fall Conference
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    • 2003.06a
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    • pp.275-278
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    • 2003
  • 원격 조작기는 같은 일을 반복적으로 수행하지 않는다는 점에서 산업용 로봇과는 구별된다. 같은 작업을 연속적으로 수행한다는 점에서 산업용 로봇은 실시간용 로봇과 구별된다고 할 수 있다. 그런데 로봇의 제어용 프로세싱 방법은 여러 거지 요인들이 복합되어 하나의 출력으로 양상된다. 본 논문에서는 원격 제어기의 모델링 오차를 입력 요인으로 힘, 위치, 운동량이 문제가 되었을 경우에 이를 계층적으로 방식으로 대안을 제시하고 이를 해결하는 방식을 다속성 가치 평가 방식으로 평가하였을 경우에 나오는 출력 방식을 PID 출력 방식과 비교하여 평가함으로서 유효함을 들어 실시간을 제어방식으로 계층적 제어방식이 적절하게 사용될 수 있음을 증명한다.

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Planning Indicators for Spatial Characteristics Evaluation of Urban Public Space - the Weight Analysis for Activation of Public Space (도시 공공공간의 공간적 특성 평가를 위한 계획 지표 연구 - 공공공간 활성화를 위한 중요도 분석)

  • Lee, Hoon-Gill;Lee, Joo-Hyung
    • The Journal of the Korea Contents Association
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    • v.15 no.9
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    • pp.588-598
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    • 2015
  • This study derives planning items and indicators that should be considered in order to activate public space in terms of the spatial characteristics of the public space was to analysis the importance in the public officials/academics and practitioners side. Derived in accordance with spatial planning topics characteristic of public space through previous research to them and after a detailed selection indicators in Christopher Alexander's Pattern Language was so lead through the FGI. Derived surface was subjected to the significance analysis AHP through the survey expert. For this study, the importance of the spatial characteristics of the public space are working professionals accessibility, publicity, connectivity, spatiality, amenity, placeness the order, public officials/academics accessibility, amenity, placeness, connectivity, spatiality, publicity the order. In addition, professionals working in the comprehensive analysis of the most important priority was to recognize the hierarchy of open space, public officials/academics appeared to have an open space on the street the most important. The results obtained in this study will be used as an index that can be used in planning and evaluation for consideration of the next active public space.

Proposed Methodological Framework of Assessing LID (Low Impact Development) Impact on Soil-Groundwater Environmental Quality (저영향개발(Low Impact Development) 기법 적용 지역 토양·지하수 환경 영향 평가 방법론 제안 연구)

  • Kim, Jongmo;Kim, Seonghoon;Lee, Yunkyu;Choi, Hanna;Park, Joonhong
    • Journal of the Korean GEO-environmental Society
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    • v.15 no.7
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    • pp.39-50
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    • 2014
  • The goal of this work is to develop a framework of methods to entirely evaluate effects of LID (Low Impact Development) on soil-groundwater environmental quality as well as land-scape and ecological factors. For this study, we conducted an extensive literature review. As outcomes, soil-groundwater environmental quality is newly conceptualized as a comprehensive index reflecting (i) groundwater pollution sensitivity (hydrogeological factor), (ii) biochemical contamination, and (iii) biodegradability. The methods of classifying and indexing is shown by combining selection of the items to be measured for soil-groundwater environmental quality and integrating the resulted items comprehensively. In addition, from soil-groundwater environmental quality, land-scape and ecological factors in existing environmental impact assessment a method was developed an overall index which can evaluate effects to environment by using GIS (Geographic Information System) and AHP (Analytic Hierachy Process). For optimizing LID planning, designing and post-evaluation, LCIA (Life Cycle Impact Assessment) was regarded as an appropriate method.

Analysis of Residential Location Preference Factors by Characteristics of Households in the Case of Daegu.Gyeongbuk Households (대구.경북 가구의 가구특성별 주거입지 선호요인 분석)

  • Park, Wonseok
    • Journal of the Economic Geographical Society of Korea
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    • v.17 no.4
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    • pp.702-717
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    • 2014
  • The purpose of this paper is to analyze the residential location preference factors by households' characteristics in the case of Daegu Gyeongbuk households. Under this research purpose, firstly, questionnaire survey of Daegu Gyeongbuk was done, and nextly, AHP(Analytic Hierachy Process) with questionnaire survey results was analyzed. The main results of this study are as follows. Firstly, residential location factors most preferred by Daegu Gyeongbuk households is capital gain, followed by living environment, accessibility of public transportation, accessibility of private car traffic and security. Therefore, we can see Daegu Gyeongbuk households prefer investment value and living amenity together as residential location factors. Secondly, according to the results of AHP by age, below 30th prefer accessibility factors, 40th prefer capital gain and school district factors, and above 50th prefer living environment, natural environment and security factors, relatively. Thirdly, according to the results of AHP by household income, low income households prefer living environment and accessibility factors, middle income households prefer capital gain and accessibility factors, and high income households prefer security, accessibility of private car traffic and view/sunlight factors, relatively.

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A Study on the Importance of Non-face-to-face Lecture Properties and Performance Satisfaction Analysis AHP and IPA: Focusing on Comparative Analysis of Professors and Students (AHP와 IPA를 활용한 비대면 강의 속성의 중요도와 실행만족도 분석 연구 : 교수자, 학습자 비교분석을 중심으로)

  • Kim, MinKyung;Lee, Taewon;Kim, Sun-Young
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.44 no.3
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    • pp.176-191
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    • 2021
  • Non-face-to-face lectures have become a necessity rather than an option since COVID-19, and in order to improve the quality of university education, it is necessary to explore the properties of non-face-to-face lectures and make active efforts to improve them. This study, focusing on this, aims to provide basic data necessary for decision-making for non-face-to-face lecture design by analyzing the relative importance and execution satisfaction of non-face-to-face lecture attributes for professors and students. Based on previous research, a questionnaire was constructed by deriving 4 factors from 1st layer and 17 from 2nd layer attributes of non-face-to-face lectures. A total of 180 valid samples were used for analysis, including 60 professors and 120 students. The importance of the non-face-to-face lecture properties was calculated by obtaining the weights for each stratified element through AHP(Analytic Hierachy Process) analysis, and performance satisfaction was calculated through statistical analysis based on the Likert 5-point scale. As a result of the AHP analysis, both the professor group and the student group had the same priority for the first tier factors, but there was a difference in the priorities between the second tier factors, so it seems necessary to discuss this. As a result of the IPA(Importance Performance Analysis) analysis, the professor group selected the level of interaction as an area to focus on, and it was confirmed that research and investment in teaching methods for smooth interaction are necessary. The student group was able to confirm that it is urgent to improve and invest in the current situation so that the system can be operated stably by selecting the system stability. This study uses AHP analysis for professors and students groups to derive relative importance and priority, and calculates the IPA matrix using IPA analysis to establish the basis for decision-making on future face-to-face and non-face-to-face lecture design and revision. It is meaningful that it was presented.

An Assessment of the Potential Area of Mountainous Wetland Using AHP (AHP를 이용한 산지습지 가능지역 평가)

  • Moon, Sang Kyun;Koo, Bonhak
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.17 no.1
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    • pp.27-43
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    • 2014
  • The purpose of this research is to assess potential area of mountainous wetland by GIS and AHP (Analytic Hierarchy Process). Mountainous wetland is topographically located at high altitude, so it's difficult to approach for researchers. And, it's difficult to investigate systematically because of the insufficient information of mountainous wetland. Therefore, it's necessary to study on potential area of mountainous wetland for systematic and efficient investigation. This research selected slope, wetting index, land-cover map and soil map as assessment items indicating environmental characteristics of mountainous wetland and established them by GIS DB. And, spatial value of mountainous wetland for each assessment item was drawn by existing investigation data and overlap analysis of mountainous wetland. Based on the numerical results of each assessment item, a survey was conducted and relative importance for each assessment item was decided by AHP. As the result, slope was the highest as 0.550 and ground coverage was the lowest as 0.083. The subject of this research was Yangsan-si and Ulsan of Gyeongnam and an analysis was conducted for mountainous wetland in those research areas. As the result, all of wetland was distributed in the range of potential area. And, field survey and literature search were conducted for the point that the distribution of mountainous wetland is expected. As the result, mountainous wetland was distributed. Therefore, mountainous wetland should be excavated through the results of this research and it should be helpful for effective investigation as providing information necessary to the following studies on mountainous wetland.

A Study on the Impact Range Calculation at the Downstream of Dam (댐이 하류하천에 미치는 영향권 산정에 관한 연구)

  • Park, Bong-Jin;Kim, Hyeon-Sik;Jung, Kwan-Sue;Ji, Hong-Ki
    • Journal of Korea Water Resources Association
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    • v.41 no.10
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    • pp.1009-1021
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    • 2008
  • In this study, 4 indices of hydraulic & hydrological, geomorphological, eco & environmental, social effect and 38 items are selected to calculate impact range of downstream of dam. The Analytic Hierarchy Process(AHP) was applied to determine the priority of impact range calculation indices and items. As results of indices valuation, hydraulic & hydrological effect is the first priority, the second is eco & environmental, next are geomorphological and social effect. As results of items valuation, the design flood of dam is the first priority, the second is the natural flood & design flood of channel, next are the design flood rate of channel, drainage area and back water level caused by downstream of dam. In the case of Daechung dam, impact ranges were estimated 47.21 km in terms of the design flood of dam, 45.71 km of the design flood rate of channel, 13.94 km of the drainage area.

Decision Mking for Efficient Resource Allocation in Initial Disaster of Flood (홍수의 재해 초기 구호활동에서 효율적 자원분배를 위한 의사결정)

  • 이영재;손동기
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.1 no.2
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    • pp.107-118
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    • 1995
  • This study is for decision making on distribution of resources so as to improve the effectiveness of initial disaster relief efforts. It is very important that relief efforts should be accomplished appropriately at the initial disaster. Furthermore, efficient allocation of relief resources such as rescuer, shelter, relief goods, relief funds, medical and relief equipments is also the first step to achieve main objective of relief efforts when disaster occurs. For this purpose, this study establishes flood as a imaginery disaster and develops a model for efficient distribution of resources when flood outbreaks. This model fixes initial 72 hours, which is subdivided into three intervals, as a initial disaster range. The model is to set a prioity against alloction of relief resources by each time zone which is related to damaged degree( Red Tag, Yellow Tag, Green Tag). Experts in this field input their experience into this model, and these are analyzed by Analytic Hierachy Process(AHP)/Expert Choice(EC) software. Therefore, we can decide a prioity against distribution of resources by each time zone which is in accordance with damaged degree. The result of this study would be helpful to a person who is in charge of relief from calamity in order him to make a decision toward distribution of resources.

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A Study on Location of Mobile Field Testbed (모바일산업클러스터구축 입지선정에 관한 연구)

  • Moon, Joon-Seo;Jang, Won-Gyu
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.33 no.3B
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    • pp.159-164
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    • 2008
  • For increasing productivity of domestic IT industry, government and local agencies have some plans to establish industrial clusters to provide local firms with testbed, R&D center, and cooperative research project. The most difficult problem in this process is to decide the location of them by resonable methodology. In this paper, the subject is to find what the factors to be considered in locating facilities and industrial clusters invested by government are and how to decide efficiently. First, we look over some cases of other countries, and then find assessment items for locating. Finally we analyze these items and assessment model by the analytic Hierachy Process(AHP) and make conclusion, As a conclusion, we find the result that there are some differences between the object of govenmental policy and needs of industry. 'The base infrastructure for telecommunications environment' is more important to be considered by the firms than 'The local benefit of the public'