By polling individual responses to hypothetical scenarios, valuation studies estimate population preferences toward health on a quality-adjusted life year (QALY) scale. The scenarios typically involve trade-offs in time (time trade-off (TTO)), risk (standard gamble (SG)), or number of persons affected (person trade-off (PTO)). This paper revisits the QALY assumptions and provides a coherent hea...

Computational psychiatry aims to apply mathematical and computational techniques to help improve psychiatric care. To achieve this, the phenomena under scrutiny should be within the scope of formal methods. As emotions play an important role across many psychiatric disorders, such computational methods must encompass emotions. Here, we consider formal valuation accounts of emotions. We focus on...

One of the most widely appreciated problems of contingent valuation is the potential manipulability of the method, thus subjecting it to possible strategic bias. This paper shows that under usual conditions this problem also holds for market-based methods, such as travel cost and hedonic pricing. However, not all formats of these valuation methods are manipulable. This paper finds positive resu...

The aim of this study was to estimate monetary value of a QALY among heart disease patients and to identify its determinants.A cross-sectional survey with face-to-face interview was conducted with 196 cardiovascular disease patients from two heart hospitals in Tehran, Iran, to estimate the value of QALY using disaggregated and aggregated approaches. The Euro Qol -5d (EQ-5D) questionnaire, visua...

Based on valuation model of residual earnings, we cannot use earnings and losses of balance sheet items recorded in fair value for valuation purposes, for the balance sheet provides a perfect estimate of such items’ value. The purpose of this study is to examine whether net financial expenses are related to the market price of stocks in Iran, because after initial recording of financial debts, ...

The notion of pseudo-valuations (valuations) on a BCC-algebra is introduced by using the Buşneag’s model ([1–3]), and a pseudo-metric is induced by a pseudo-valuation on BCC-algebras. Conditions for a real-valued function to be an BCK-pseudo-valuation are provided. The fact that the binary operation in BCC-algebras is uniformly continuous is provided based on the notion of (pseudo) valuation.

This paper introduces the notions of independence and conditional independence in valuation-based systems (VBS). VBS is an axiomatic framework capable of representing many different uncertainty calculi. We define independence and conditional independence in terms of factorization of the joint valuation. The definitions of independence and conditional independence in VBS generalize the correspon...