We consider voting over combinatorial domains, where alternatives are binary tuples. We assume that votes are specified as conditionally lexicographic preferences, or LP trees. We study aggregation problems of LP tree votes for several positional scoring rules. Our main goal is to demonstrate that answer-set programming can be effective in solving the winner and the evaluation problems for inst...

This article tries to explain the exceptional levels of knowledge creation in certain industrial clusters, levels that are seemingly higher than what is implied by the usual models of atomistic agents who do not internalize externalities. For this purpose, we introduce reference-dependent utility into an OLG model of an industrial cluster where agents allocate resources between consumption and ...

Core-selection is a crucial property of social choice functions, or rules, in social choice literature. It is also desirable to address the incentive of agents to cheat by misreporting their preferences. This paper investigates an exchange problem where each agent may have multiple indivisible goods, agents’ preferences over sets of goods are assumed to be lexicographic, and side payments are n...

background and objectives: informal payment in the health settings is a significant challenge facing the health system, with consequences such as inequity in access to healthcare services, distrust to health care system, and dissatisfied customers. detailed identification of the nature of the problem is perquisite to developing relevant overcoming strategies. given that, this study aimed at pro...

We derive necessary and sufficient conditions in order for binary voting choices over a finite number of pairs of alternatives to be consistent with voter preferences that admit concave utility representations. These conditions imply simple testable restrictions on the location of voters’ ideal points, and can be used to predict individual voting behavior. On the other hand, if the location of ...

People’s choices can be predicted given information about their preferences. Learning people’s preferences is the inverse problem of inferring preferences from choices. Given the apparent relationship between choice prediction and preference learning, it is natural to ask whether the two are mutually consistent. Given weak assumptions, we show that no single, consistent model of the relationshi...

This paper studies differences in inequality perceptions, distributional norms, and redistributive preferences between East and West Germany. As expected, there are substantial differences with respect to all three of these measures. Surprisingly, however, differences in distributional norms are much smaller than differences with respect to inequality perceptions or redistributive preferences. ...

In allocating goods with no use of monetary transfers, random allocation mechanisms can be designed in order to elicit information on preference intensities. I study the nontransfer allocation of two ex-ante identical objects under Bayesian incentive compatibility, with symmetric agents and independent private valuations. I …nd the ex-ante utilitarian-optimal mechanism, in which the probability...

In the newsvendor problem, a decision maker chooses an inventory order quantity prior to the realization of a random demand. The decision maker faces a trade-off between ordering too many and having leftover inventory versus ordering too few and missing out on potential sales. Keeping the net profit structure constant, we study how the timing of the payments affects the inventory decisions. Spe...

Since 1983 Indonesia has carried out tax reforms where the payment procedure haschanged from official assessment to self-assessment system. Self-assessment system givesfull trust and responsibility taxpayer community fulfill their obligations. Toincrease awareness is important in increasing state revenue. The services of officersare also very influencing taxpayers. Because quality service musta...