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  • Springer  (7)
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  • American Institute of Physics (AIP)
  • American Physical Society (APS)
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  • Wirtschaftswissenschaften  (7)
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Economic theory 9 (1997), S. 47-61 
    ISSN: 1432-0479
    Schlagwort(e): D80 ; D81 ; D83
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Wirtschaftswissenschaften
    Notizen: Summary Case-Based Decision Theory (CBDT) postulates that decision making under uncertainty is based on analogies to past cases. In its original version, it suggests that each of the available acts is ranked according to its own performance in similar decision problems encountered in the past. The purpose of this paper is to extend CBDT to deal with cases in which the evaluation of an act may also depend on past performance of different, but similar acts. To this end we provide a behavioral axiomatic definition of the similarity function over problem-act pairs (and not over problem pairs alone, as in the original model). We propose a model in which preferences are context-dependent. For each conceivable history of outcomes (to be thought of as the “context” of decision) there is a preference order over acts. If these context-dependent preference relations satisfy our consistency-across-contexts axioms, there is an essentially unique similarity function that represents these preferences via the (generalized) CBDT functional.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Economic theory 9 (1997), S. 355-365 
    ISSN: 1432-0479
    Schlagwort(e): E40 ; D82 ; D83
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Wirtschaftswissenschaften
    Notizen: Summary I study a version of the Williamson-Wright (1994) model that results from ruling out direct barter. Although one can no longer argue that the value of money comes exclusively from private information, one can use the simplified model to address a variety of other issues. In particular, one can characterize analytically the set of equilibria and their properties. One can also analyze the trade-off between providing liquidity to facilitate trade and providing incentives to produce high quality, and address some other issues related to policy and welfare, including the effects of inflation on the incentives to produce high quality.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Economic theory 9 (1997), S. 325-339 
    ISSN: 1432-0479
    Schlagwort(e): D83
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Wirtschaftswissenschaften
    Notizen: Summary This paper is concerned with the relationship between a continuous dynamical system and the trajectory generated by such a system. The main result provides necessary and sufficient conditions for an infinite data stream to be rationalized as the output of a continuous law of motion. The paper develops concepts of informativeness of a given set of intertemporal data and shows that informativeness is maximal when the data is chaotic. It also demonstrates that with probability one the sample paths from a non-trivial independent and identically distributed stochastic process cannot be rationalized as the output of a continuous deterministic system. Two impossibility results are discussed which show that even with an infinite amount of data the hypothesis that the data has been generated by a non-monotonic function cannot be ruled out. An application concerning the recovery of the excess demand function from a sequence of price observations from the tatonnement process is also given.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 4
    Digitale Medien
    Digitale Medien
    Springer
    Journal of economics 65 (1997), S. 163-180 
    ISSN: 1617-7134
    Schlagwort(e): information ; tests ; job assignment ; skilled and unskilled jobs ; D83 ; J41
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Wirtschaftswissenschaften
    Notizen: Abstract This paper investigates the optimal acquisition of information in a model of job assignment within a firm. We consider a firm with two types of jobs, skilled and unskilled. The firm draws workers randomly from the general population, and a worker is either talented or untalented. Initially, a worker's productivity in the firm is unknown to the worker and the firm. Workers are equally productive in the unskilled job, but talented workers are more productive in the skilled job than in the unskilled job, and untalented workers are more productive in the unskilled job than in the skilled job. Before assigning a worker to a job, the firm can test whether the employee is talented, and the firm is able to choose the accuracy of this test. We assume that the cost of a test is increasing and convex in test accuracy. We show that (1) the accuracy of the firm's test increases with the cost of a mismatched worker; (2) increased optimism about the worker's ability need not lead to less rigorous testing; (3) the probability that a worker is assigned to the skilled job need not increase as the gain from assigning a talented worker to a skilled job increases, or the loss from assigning an untalented worker to a skilled job decreases, or the fraction of the population that is skilled increases; and (4) a longer testing period, allowing as many as two tests of workers, leads the firm to use a less expensive, and less accurate, test initially than when there is only one opportunity to gather information.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 5
    Digitale Medien
    Digitale Medien
    Springer
    Journal of economics 65 (1997), S. 235-256 
    ISSN: 1617-7134
    Schlagwort(e): rational expectations ; New Keynesian microfoundations ; learning ; self-referential systems ; D83 ; E24
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Wirtschaftswissenschaften
    Notizen: Abstract I consider the prototype New Keynesian macroeconomic model with subjective demand expectations of firms. In this model the firms' objective demand is log-linear in their relative price. Firms believe that their demand curve is linear or log-linear in their absolute price. They estimate the parameters of this curve by least squares from past observations on prices and quantities. The wage rate either clears the labor market given firms' demand perceptions or is given in the short run and changes according to a linear Phillips curve. In either setup of the model the interplay between learning and price setting confirms the subjective model. Among the long-run equilibria are solutions at which the representative household attains a higher level of utility as compared to the rational-expectations outcome. If the supply of labor depends upon the real wage, money is not neutral.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 6
    Digitale Medien
    Digitale Medien
    Springer
    Journal of economics 66 (1997), S. 103-125 
    ISSN: 1617-7134
    Schlagwort(e): money ; perishable commodities ; search theory ; C73 ; D83 ; E00
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Wirtschaftswissenschaften
    Notizen: Abstract The aim of this paper is to demonstrate that a perishable good may be used as commodity money, even in economies in which perfectly durable commodities are available. This is shown in the general context of a search-theoretical model of a decentralized economy.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 7
    Digitale Medien
    Digitale Medien
    Springer
    Journal of economics 66 (1997), S. 283-305 
    ISSN: 1617-7134
    Schlagwort(e): fixed prices ; price adjustment ; risk aversion ; menu cost ; D21 ; D81 ; D83
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Wirtschaftswissenschaften
    Notizen: Abstract A risk-averse price-setting firm which knows the quantity demanded at the status quo price but has imperfect information otherwise may choose not to change it although an otherwise identical risk-neutral firm would do so, provided the variance of the firm's subjective probability distribution over quantities demanded as a function of price displays a kink at the status quo. This is equivalent to risk aversion of order one. When no such endogenous fixprice exists, the size of price adjustment still tends to zero as risk aversion tends to infinity, and to any arbitrarily small menu cost there exists a degree of risk aversion so that the firm will not adjust.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
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