Subjective Estimation and Its Use in MCDM

Author(s):  
Geoff Lockett ◽  
Barrie Hetherington ◽  
Peter Yallup
1988 ◽  
Vol 27 (01) ◽  
pp. 23-33 ◽  
Author(s):  
Fiorella de Rosis ◽  
G. Steve ◽  
C. Biagini ◽  
R. Maurizi-Enrici

SummaryThe decision process for diagnosis and treatment of Hodgkin’s disease at the Institute of Radiology of Rome has been modelled integrating the guidelines of a protocol with uncertainty aspects. Two models have been built, using a PROSPECTOR-like Expert System shell for microcomputers: the first of them treats the uncertainty by the inferential engine of the shell, the second is a probabilistic model. The decisions suggested in a group of simulated and real cases by a section of the two models have been compared with an “objective” final diagnosis; this analysis showed that, in some cases, the two models give different suggestions and that “approximations” of the shell’s inferential engine may induce wrong conclusions. A sensitivity analysis of the probabilistic model showed that the outputs are greatly influenced by variations of parameters, whose subjective estimation appears to be especially difficult. This experience gives the opportunity to consider the risks of building clinical decision models based on Expert System shells, if the assumptions and approximations hidden in the shell have not been previously analyzed in a careful and critical way.


1982 ◽  
Vol 54 (1) ◽  
pp. 31-39
Author(s):  
Vezio Ruggieri ◽  
Antonia Guerrera

The subjective estimations of long durations of time were studied for two different types of experience, an analytically oriented (Bionian) group situation and a task group. In each group were 15 subjects. Significant differences emerge in estimations of duration of time for the two situations. Whereas for the task group there are no substantial errors in the subjective estimation of time, the analytically oriented group shows notable oscillations with respect to different cognitive and emotional situations which, from time to time, characterize the group situation.


ECONOMICS ◽  
2018 ◽  
Vol 6 (2) ◽  
pp. 87-94
Author(s):  
Željko V. Račić

Summary The theory of fuzzy sets allows to analyze insufficiently precise, accurate, complete phenomena which can not be modeled by the theory of probability or interval mathematics. We define fuzzy sets as sets where the boundary of the set is unclear and depends on subjective estimation or individual preference. In addition to the standard interpretation scale, described above, a set of numbers to each qualitative attribute must be assigned. In addition to the standard interpretation scale a set of numbers to each qualitative attribute must be assigned. First of all, it is necessary to determine the procedure for determining fuzzy numbers describing the attributes. One of the imperfections of the fuzzy sets is subjectivism when defining the boundaries of fuzzy sets and functions of belonging, which can significantly influence the final decision. The decision maker’s subjectivity is also present in the determination of weighted coefficients. However, in case of giving weight, fixed values are necessary. Some decisions require multidisciplinary knowledge, so the decision-making process includes more group decision-makers, who independently give their grades.


2020 ◽  
Vol 87 (7-8) ◽  
pp. 33-37
Author(s):  
V. І. Liakhovskyi ◽  
R. М. Riabushko ◽  
А. V. Sydorenko

Objective. To study the patients’ quality of life after operative interventions, performed for venous trophic ulcers of the lower extremities. Маterials and methods. Analysis of data from 82 hospital cards of stationary patients was conducted. The patients were treated during 2010 - 2017 yrs in the Department of Vascular Surgery of Poltava Regional Clinical Hospital named after М. V. Sklifosovskyi for venous trophic ulcers of the lower extremities (Class С5 in accordance to Clinical-Etiological-Anatomical-Pathophysiological classification - СЕАР). The cause of trophic ulcers occurrence in all the patients was confirmed, using ultrasound duplex scanning of pelvic and the lower extremities arteries and veins. After conduction of certain conservative therapy the operative intervention, directed on elimination of the occurrence cause of trophic ulcers, was done. In all the patients the conduction of endovenous thermal ablations was not indicated, taking into account the anatomic peculiarities presented. Depending on the methods of operative interventions performed, the patients were distributed into two groups: Group I - 48 (58.5%) patients, surgical treatment of whom consisted of typical conventional open operative interventions, using a standard set of instruments, while Group II - 34 (41.5%) patients, to whom operative interventions were done, using elaborated own gadgets for the wounds edges opening, dissection and ligation of perforant and large subcutaneous veins, nontraumatic suturing of postoperative wounds. All operative interventions in the Group II patients were performed, using ultrasonographic support. In patients of both Groups a subjective estimation of quality of life was conducted, using questionnaire CIVIQ (Chronic Insufficiency Venous International Questions) for interviewing preoperatively and in 1, 3 and 6 mo postoperatively. Results. In accordance to data obtained, in patients of Group II the score in points of quality of life was higher, because in them the ulcers have healed faster, the pain sensation reduced, resulting in the psycho-emotional state improvement. Besides this, 29 (85.3%) patients of Group II have noted, that even while some symptoms persisted, their subjective signs reduced, leading to the well-being improvement. The conduction of treatment in accordance to own procedures proposed have promoted the raising of the quality of life score in patients, suffering trophic ulcers of the lower extremities. Conclusion. Application of gadgets of own elaboration during operative intervention on venous system of the lower extremities accelerates its performance and reduces traumaticity. This leads to reduction of the pain sensitivity intensity, raising of subjective estimation of quality of life in remote postoperative period.


2021 ◽  
Author(s):  
Tao Yu ◽  
Shihui Han

Perceived cues signaling others' pain induce empathy that in turn motivates altruistic behavior toward those who appear suffering. This perception-emotion-behavior reactivity is the core of human altruism but does not always occur in real life situations. Here, by integrating behavioral and multimodal neuroimaging measures, we investigate neural mechanisms underlying the functional role of beliefs of others' pain in modulating empathy and altruism. We show evidence that decreasing (or enhancing) beliefs of others' pain reduces (or increases) subjective estimation of others' painful emotional states and monetary donations to those who show pain expressions. Moreover, decreasing beliefs of others' pain attenuates neural responses to perceived cues signaling others' pain within 200 ms after stimulus onset and modulate neural responses to others' pain in the frontal cortices and temporoparietal junction. Our findings highlight beliefs of others' pain as a fundamental cognitive basis of human empathy and altruism and unravel the intermediate neural architecture.


2004 ◽  
Vol 27 (4) ◽  
pp. 565-566
Author(s):  
Vladimir A. Lefebvre

In this comment, I describe how the processes of free giving can be simulated with the help of the Reflexive Intentional Model of the Subject (RIMS). This simulation demonstrates that there are two essential factors affecting the size of a share given to others: limits accepted by the society as “normal,” and the individual's subjective estimation of a mean share donated by other members of the society.


2008 ◽  
Vol 52 (3) ◽  
pp. 184-201 ◽  
Author(s):  
Michele Bernasconi ◽  
Christine Choirat ◽  
Raffaello Seri

2006 ◽  
Vol 18 (4) ◽  
pp. 489-498 ◽  
Author(s):  
Kazunori Terada ◽  
◽  
Akinori Kumazaki ◽  
Daisuke Miyata ◽  
Akira Ito ◽  
...  

When a human recognizes length of an object while exploring it with an index finger, both proprioception and cutaneous sensation provide information for estimating the length of the object. We studied the contribution of cutaneous sensation and proprioception to the subjective estimation of object length, developing an apparatus for investigating the human cutaneous-proprioceptive integration using velocity dependency of cutaneous and proprioceptive length perception. We conducted four experiments. In experiment 1, 12 subjects estimated object length passively, using cutaneous sensation only via the index finger. In experiment 2, ten subjects estimated the distance if index finger traveled passively without cutaneous sensation. In experiment 3, subjects used both cutaneous and proprioceptive sensation to estimate the object length. The results showed that using both senses simultaneously improves length perception. In experiment 4, 17 subjects estimated object length moving the index finger passively but with the cutaneous sensation and proprioception differing in perceived length. The results showed that subjects relied on the greater sensation if proprioceptive and cutaneous sensations were discrepant.


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