Aggregation in the analytic hierarchy process: Why weighted geometric mean should be used instead of weighted arithmetic mean

2018 ◽  
Vol 114 ◽  
pp. 97-106 ◽  
Author(s):  
Jana Krejčí ◽  
Jan Stoklasa
Keyword(s):  
Analytic Hierarchy Process ◽  
Geometric Mean ◽  
Arithmetic Mean ◽  
Analytic Hierarchy ◽  
Weighted Arithmetic ◽  
The Analytic Hierarchy Process ◽  
Hierarchy Process

scholarly journals Prioritizing risk events of a large hydroelectric project using fuzzy analytic hierarchy process

2021 ◽  
Vol 6 (3) ◽  
pp. 107-120
Author(s):  
Nehal Elshaboury
Keyword(s):  
Analytic Hierarchy Process ◽  
Energy Demand ◽  
Hydroelectric Plant ◽  
Geometric Mean ◽  
Arithmetic Mean ◽  
Fuzzy Analytic Hierarchy Process ◽  
Analysis Method ◽  
Analytic Hierarchy ◽  
Hierarchy Process ◽  
Maximum Minimum

The existence of hydroelectric plants along Amazon River tributaries is a solution to satisfy the energy demand in Brazil. However, these plants are subjected to multiple risk events because of the geographic and socioeconomic characteristics of this region. In helping to address these escalating challenges, this paper presents a framework that assesses the risk events of service packs relevant to the plant. This framework presents a transparent approach for prioritizing risk events in large projects. The weights of importance of risk events are estimated using the fuzzy analytic hierarchy process. Chang’s extent analysis method takes into consideration the vagueness and imprecision of subjective human judgments. The convergence of decisions is evaluated using two aggregation approaches, namely the maximum-minimum method based on an arithmetic mean and a geometric mean. The performances of the original and modified extent analysis methods are compared using group Euclidean distance and distance between weights metrics. The degree of similarity between the evaluation metrics is examined using Spearman’s rank correlation coefficient and average overlap approaches. Due to the inconsistency of the reported results, the final rankings of the aggregation approaches are determined using a new aggregated multiple criteria decision making method. The results indicate that the original extent analysis method using the maximum-minimum method (arithmetic mean) is the best aggregation method. A Santo Antonio hydroelectric plant in Brazil is used to demonstrate the application of the proposed framework.

Index of suicide risk in Mexico using Twitter

2019 ◽  
pp. 1-13
Author(s):  
Luz Judith Rodríguez-Esparza ◽  
Diana Barraza-Barraza ◽  
Jesús Salazar-Ibarra ◽  
Rafael Gerardo Vargas-Pasaye
Keyword(s):  
Social Networks ◽  
Analytic Hierarchy Process ◽  
Suicide Risk ◽  
Opinion Mining ◽  
Real Data ◽  
Analytic Hierarchy ◽  
Specialized Care ◽  
The Analytic Hierarchy Process ◽  
Hierarchy Process

Objectives: To identify early suicide risk signs on depressive subjects, so that specialized care can be provided. Various studies have focused on studying expressions on social networks, where users pour their emotions, to determine if they show signs of depression or not. However, they have neglected the quantification of the risk of committing suicide. Therefore, this article proposes a new index for identifying suicide risk in Mexico. Methodology: The proposal index is constructed through opinion mining using Twitter and the Analytic Hierarchy Process. Contribution: Using R statistical package, a study is presented considering real data, making a classification of people according to the obtained index and using information from psychologists. The proposed methodology represents an innovative prevention alternative for suicide.

scholarly journals Vulnerability Assessment of Ubiquitous Cities Using the Analytic Hierarchy Process

2020 ◽  
Vol 12 (12) ◽  
pp. 235
Author(s):  
Muhammad Atiq Ur Rehman Tariq ◽  
Cheuk Yin Wai ◽  
Nitin Muttil
Keyword(s):  
Analytic Hierarchy Process ◽  
Information And Communication Technologies ◽  
Natural Hazards ◽  
Communication Technologies ◽  
Analytic Hierarchy ◽  
Information And Communication ◽  
The Analytic Hierarchy Process ◽  
Sustainable Services ◽  
Hierarchy Process ◽  
Insight Into

Urbanization is a challenge faced by most countries worldwide and leads to several problems. Due to rapid communication capabilities, conforming the megacities into Ubiquitous cities (U-cities) seems to be a potential solution to mitigate the problems caused by urbanization. Extensive reliance and dependencies of U-cities on information and communication technologies (ICTs) bring forth a new set of risks and vulnerabilities to these megacities. This research investigates the vulnerabilities of ICTs against man-made and natural hazards in a systematic way using the Analytic Hierarchy Process. The study identifies the vulnerabilities of different ICTs in U-cities and helps in improving the system’s resistivity against various hazards. The task is performed by evaluating the level of disruption on the different technologies and areas under the identified man-made and natural hazards. The research provides an insight into the working mechanisms of involved ICTs. It also helps to manage U-cities with more secure and sustainable services. The research identified that the new ICTs-based hazards have emerged and have become among the most influential hazards. The research has concluded that the vulnerabilities of U-cities are significantly different from that of conventional cities and need further studies to develop further understandings. The research recommends similar vulnerability studies for regional areas as well.

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