Architecture for Decision-Making and Task-Oriented Reasoning for the Web of Trust

2009 ◽  
Author(s):  
Stanislav Ustymenko ◽  
Daniel G. Schwartz ◽  
George Maroulis ◽  
Theodore E. Simos
Author(s):  
Di Chen ◽  
Yada Zhu ◽  
Xiaodong Cui ◽  
Carla Gomes

Real-world applications often involve domain-specific and task-based performance objectives that are not captured by the standard machine learning losses, but are critical for decision making. A key challenge for direct integration of more meaningful domain and task-based evaluation criteria into an end-to-end gradient-based training process is the fact that often such performance objectives are not necessarily differentiable and may even require additional decision-making optimization processing. We propose the Task-Oriented Prediction Network (TOPNet), an end-to-end learning scheme that automatically integrates task-based evaluation criteria into the learning process via a learnable surrogate loss function, which directly guides the model towards the task-based goal. A major benefit of the proposed TOPNet learning scheme lies in its capability of automatically integrating non-differentiable evaluation criteria, which makes it particularly suitable for diversified and customized task-based evaluation criteria in real-world tasks. We validate the performance of TOPNet on two real-world financial prediction tasks, revenue surprise forecasting and credit risk modeling. The experimental results demonstrate that TOPNet significantly outperforms both traditional modeling with standard losses and modeling with hand-crafted heuristic differentiable surrogate losses.


2016 ◽  
Vol 20 (6) ◽  
pp. 49-54
Author(s):  
I. Barbas ◽  
E. Bebetsos ◽  
K. Christos ◽  
D. Curby ◽  
B. Mirzaei

Aim: study was to investigate any possible effect(s) of experiences from active membership and participation in task or ego orientations among referees in the sport of wrestling. Material: The sample consisted of 213 international referees from 30 countries (Greece, Turkey, Bulgaria, France, Italy, Germany, Sweden, Finland, Switzerland, Russia, Poland, Hungary, U.S.A, Ukraine, Armenia, Azerbaijan, Iran, Japan, Korea, Mongolia, Kazakhstan, Egypt, Canada, Georgia, Croatia, Uzbekistan, Norway, Cuba, Belarus, & Tunisia). Their age ranged from 26 to 60 yrs. old ( M =43, SD =8.6). During the procedure, the participants were asked to fill a specific questionnaire, the «Task and Ego Orientation in Sport Questionnaire» (Duda & Nicholls, 1992). Results: Results showed that the referees from elite wrestling level’ countries (Russia, Azerbaijan, Iran, Turkey, Georgia, Armenia, Bulgaria, Ukraine, U.S.A., Korea, Japan, Kazakhstan, & Cuba) are more task oriented than those from the non-elite wrestling level’ countries. Researchers believe that this occurred because referees from non-elite wrestling level’ countries might have less game-sport experience and more specifically in high level games. At the same time, the Olympic experience referees were more task oriented than the non-Olympic experienced. Conclusion: Referee’s decisions are an important issue in the sport milieu. The investigations in decision-making by referees and factors that affect it are rather scarce and research should focus on such topics. Improvement of decision-making by referees, would lead to safer and better performance. Thus, better understanding of referees’ behavior, through identification and operationalization of the factors affecting it, might lead to more effective selection, training and performance.


Author(s):  
Priscilla Paola Severo ◽  
Leonardo B. Furstenau ◽  
Michele Kremer Sott ◽  
Danielli Cossul ◽  
Mariluza Sott Bender ◽  
...  

The study of human rights (HR) is vital in order to enhance the development of human beings, but this field of study still needs to be better depicted and understood because violations of its core principles still frequently occur worldwide. In this study, our goal was to perform a bibliometric performance and network analysis (BPNA) to investigate the strategic themes, thematic evolution structure, and trends of HR found in the Web of Science (WoS) database from 1990 to June 2020. To do this, we included 25,542 articles in the SciMAT software for bibliometric analysis. The strategic diagram produced shows 23 themes, 12 of which are motor themes, the most important of which are discussed in this article. The thematic evolution structure presented the 21 most relevant themes of the 2011–2020 period. Our findings show that HR research is directly related to health issues, such as mental health, HIV, and reproductive health. We believe that the presented results and HR panorama presented have the potential to be used as a basis on which researchers in future works may enhance their decision making related to this field of study.


Author(s):  
Leonardo B. Furstenau ◽  
Bruna Rabaioli ◽  
Michele Kremer Sott ◽  
Danielli Cossul ◽  
Mariluza Sott Bender ◽  
...  

The COVID-19 pandemic has affected all aspects of society. Researchers worldwide have been working to provide new solutions to and better understanding of this coronavirus. In this research, our goal was to perform a Bibliometric Network Analysis (BNA) to investigate the strategic themes, thematic evolution structure and trends of coronavirus during the first eight months of COVID-19 in the Web of Science (WoS) database in 2020. To do this, 14,802 articles were analyzed, with the support of the SciMAT software. This analysis highlights 24 themes, of which 11 of the more important ones were discussed in-depth. The thematic evolution structure shows how the themes are evolving over time, and the most developed and future trends of coronavirus with focus on COVID-19 were visually depicted. The results of the strategic diagram highlight ‘CHLOROQUINE’, ‘ANXIETY’, ‘PREGNANCY’ and ‘ACUTE-RESPIRATORY-SYNDROME’, among others, as the clusters with the highest number of associated citations. The thematic evolution. structure presented two thematic areas: “Damage prevention and containment of COVID-19” and “Comorbidities and diseases caused by COVID-19”, which provides new perspectives and futures trends of the field. These results will form the basis for future research and guide decision-making in coronavirus focused on COVID-19 research and treatments.


SAGE Open ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 215824402097916
Author(s):  
Carlota Lorenzo-Romero ◽  
María-Encarnación Andrés-Martínez ◽  
María Cordente-Rodríguez ◽  
Miguel Ángel Gómez-Borja

This work aims to study the web innovation strategies used by Spanish companies in the fashion and accessories sector, with the specific aim of analyzing co-creation as an innovation strategy so that this link with customers will improve efficiency and effectiveness in decision-making. Qualitative research was carried out through in-depth interviews with Spanish professionals and companies in the fashion and accessories sector. Then, a theoretical model was proposed. This model integrates value co-creation, social networking, participation, engagement, feedback, and other variables. This qualitative analysis has relevant value for the professional sector because there are many papers from consumers’ perspective; however, studies from the retail sector’s perspective are less common in the literature. This study contributes ideas for the strategy of co-participation with clients to improve the activity and management of fashion companies.


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