Across-sample Incomparability of R2s and Additional Evidence on Value Relevance Changes Over Time

Abstract:  Given the increasing popularity of across-sample R ² comparisons in accounting research, this paper illustrates why the regression R ²s are incomparable across samples and the general nature of this problem. The regression residual dispersion with proper control for scale is proposed as the alternative measure of explanatory power for across-sample comparisons. In market-on-accounting variable regressions, this measure can be conveniently interpreted as the degree of accounting-based pricing errors and be used as a measure of value relevance of accounting information. As an application, the issue of over-time value relevance changes is re-visited. In contrast to prior mixed findings based on the R ² measure, a decline of value relevance since the early 1970s is robustly detected using the alternative measure.     

Monopolists and viscous demand

We characterize the optimal dynamic price policy of a monopolist who faces “viscous” demand for its services. Demand is viscous if it adjusts relatively slowly to price changes. We show that with the optimal policy the monopolist stops short of achieving 100% market penetration, even when all of the consumers have the same long-run willingness to pay for the service. Furthermore, for certain parameter values in the model, the price policy requires rapid oscillations of the price path.     

存款保险制度下银行道德风险计量范式——期权定价模型

存款保险制度作为金融安全网三大基本要素之一，在保护小额存款人、维持公众信心等方面发挥着举足轻重的作用。但是这一制度的实施，会诱发道德风险，给整个金融体系的安全带来负面影响。本文基于期权定价模型，提出在实行存款保险体制下的道德风险计量思路，从而为相关监管部门决策提供依据。     

Dividend policy under conditions of capital market and signaling equilibria

This article develops a generalized capital asset pricing model with dividend signaling under the assumption of asymmetric information between corporate insiders and outside investors. The generalized capital asset pricing model is derived under reasonably plausible conditions that are sufficient for the existence of dividends. The model provides a theoretical framework for testing the effect of dividends on equity price and returns. Further, if dividends serve as a credible signal and the cost of signaling is positive, paying higher dividends results in higher systematic risk.     

On a general class of one-factor models for the term structure of interest rates

We propose a general one-factor model for the term structure of interest rates which based upon a model for the short rate. The dynamics of the short rate is described by an appropriate function of a time-changed Wiener process. The model allows for perfect fitting of given term structure of interest rates and volatilities, as well as for mean reversion. Moreover, every type of distribution of the short rate can be achieved, in particular, the distribution can be concentrated on an interval. The model includes several popular models such as the generalized Vasicek (or Hull-White) model, the Black-Derman-Toy, Black-Karasinski model, and others. There is a unified numerical approach to the general model based on a simple lattice approximation which, in particular, can be chosen as a binomial or -nomial lattice with branching probabilities .     

谈不同计价方式对建筑产品价格影响的分析

文章主要从亲自运用过的不同计价方式——定额计价方式与清单计价方式对同一类建筑产品价格的影响,分析两种计价方式的特点,指出计价方式的发展方向。     

浅析影响REITs定价的因素

随着REITs即将在我国面世，对REITs的定价研究也越来越被提上日程。从标的建筑物未来现金流、投资者结构、REITs红利分配政策及税收优惠3方面入手，介绍它们对REITs定价的影响。     

Nonparametric methods with applications to hedonic models

Current real estate statistical valuation involves the estimation of parameters within a posited specification. Suchparametric estimation requires judgment concerning model (1) variables; and (2) functional form. In contrast,nonparametric regression estimation requires attention to (1) but permits greatly reduced attention to (2). Parametric estimators functionally model the parameters and variables affectingE(y¦x) while nonparametric estimators directly modelpdf(y, x) and henceE(y¦x).This article applies the kernel nonparametric regression estimator to two different data sets and specifications. The article shows the nonparametric estimator outperforms the standard parametric estimator (OLS) across variable transformations and across data subsets differing in quality. In addition, the article reviews properties of nonparametric estimators, presents the history of nonparametric estimators in real estate, and discusses a representation of the kernel estimator as a nonparametric grid method.     

Exchange Rates and the Conversion of Currency‐Specific Risk Premia

How do the risk factors that drive asset prices influence exchange rates? Are the parameters of asset price processes relevant for specifying exchange rate processes? Most international asset pricing models focus on the analysis of asset returns given exchange rate processes. Little work has been done on the analysis of exchange rates dependent on asset returns. This paper uses an international stochastic discount factor (SDF) framework to analyse the interplay between asset prices and exchange rates. So far, this approach has only been implemented in international term structure models. We find that exchange rates serve to convert currency‐specific discount factors and currency‐specific prices of risk – a result linked to the international arbitrage pricing theory (IAPT). Our empirical investigation of exchange rates and stock markets of four countries presents evidence for the conversion of currency‐specific risk premia by exchange rates.     

Temporary financial equilibrium

Summary. In a two-period pure exchange economy with financial assets, a temporary financial equilibrium is an equilibrium of the current spot and security markets given forecast functions of future prices and payoffs. The temporary equilibrium model can then be interpreted as an Arrow-Debreu economy where preferences depend on prices. This identification implies, among other consequences, the existence and the generic determinateness of the financial temporary equilibria associated with given forecast functions. Received: December 29, 1999; revised version: December 20, 2001