中国通货膨胀率及其波动关系分析

有关通货膨胀率和通货膨胀率波动影响关系,存在F riedm an-B a ll和Cuk ierm an-M e ltzer两种假说,即存在通货膨胀率及其波动的相互影响关系。使用GARCH和TGARCH模型,选择中国1993~2004年月度通货膨胀率数据,检验结果表明F riedm an-B a ll假说成立,稳健的货币政策对经济发展有积极作用。     

Time Series Analysis of Inflation Targeting in Selected Countries

Abstract

We analyze a set of countries which adopted inflation targeting (IT) as a policy tool. We model the pre‐IT period with ARMA and GARCH methods, and conduct the one‐step ahead forecasting for the remainder of the times series data. The actual and forecasted inflation levels are compared for each country. We find that even though the actual inflation levels are lower than the forecasted ones, there is no statistical evidence to suggest that the adoption of IT causes a structural break in the inflation levels of the countries which adopt IT.     

资产收益率与通货膨胀率关联性的实证分析

通过研究股票实际收益率与通货膨胀波动性之间的关系,可以判断股票市场波动和宏观经济运行之间的联系.我们检验发现,通货膨胀率的波动能够影响股票实际收益率的变化,这说明价格水平变化不仅影响消费品之间的替代,也影响投资品之间的替代.因此,通过积极货币政策缓解通货紧缩压力,可以增强股票市场的规模活性并形成收益率上升的稳定预期.     

A Search Model of Unemployment and Inflation*

This paper introduces money into the standard labor‐matching model. A double‐coincidence problem makes money necessary as a medium of exchange. In the long run, a rise in the growth rate of money leads to higher inflation and higher unemployment, such that the long‐run Phillips curve is not vertical. The optimal monetary growth rate decreases with greater worker bargaining power, the level of unemployment benefits, and the payroll tax rate.     

Inflation Targeting and Inflation Uncertainty

This article empirically investigates the impact of inflation targeting on inflation uncertainty. We implement PARCH and GARCH methodologies to model conditional variance of inflation. We also investigate the relationship between level and volatility of inflation to analyze the validity of the Friedman hypothesis for IT countries. We find that most of the inflation targeting countries have significantly lower inflation variances after inflation targeting. In most of the IT countries, the relationship is consistent with the Friedman hypothesis.     

中国的通货膨胀惯性与通货膨胀不确定性——基于有限理性NKPC模型的分析

本文拓展有限理性菲利普斯曲线模型并结合中国参数进行校准,然后利用校准模型研究中国通货膨胀惯性特征及其与通货膨胀不确定性之间的关系。结果显示,有限理性菲利普斯曲线模型能很好地模拟出与中国实际通货膨胀惯性类似的特征。进一步研究还发现,研究样本期间,中国通货膨胀惯性总体上呈现先上升而逐渐下降的驼峰型特征,而且与通货膨胀预期不确定性存在正向相关关系。这些发现意味着,我国中央银行货币政策滞后效应正在缩短,而为了进一步降低通胀惯性并提高货币政策有效性,引导通货膨胀预期保持稳定是一大途径。     

Inflation, Unemployment and the NAIRU in Australia

In this paper we investigate the relationship between inflation and unemployment in Australia, post 1959. Our approach is based on identification of the time series components of the data. Evidence is found of significant correlations between the non-trend frequencies of inflation and unemployment and these correlations are exploited to estimate a simple forecasting model that does not suffer from the instability normally associated with the Phillips Curve. Estimates of the NAIRU are also provided and these range from as low as 2.3 per cent to as high as 9.2 per cent over this period, but these estimates are quite imprecise. Reasons for this imprecision are discussed.     

中国通胀水平与通胀不确定性:马尔柯夫域变分析

本文使用中国1985年以来月度数据,基于马尔柯夫域变模型考察了通胀水平及其与不确定性的关系。我们将通胀的不确定性分解为两类成分:未来通胀冲击的不确定性和未来通胀均值域变的不确定性。研究结果表明,高的通胀水平伴随着这两类不确定性成分的同时增大,这意味着通胀成本很大程度上和不确定性的成本联系在一起,稳定价格和维持低通胀环境可能成为央行减少不确定性的重要手段。本文结果还表明,域变模型相对线性自回归模型以及ARCH模型更好地刻画了中国通胀率过程的特点。以往应用中忽略了这种域变特点可能导致通胀预测值相对于真实值的系统性偏差,或者通胀不确定性的错误估计。     

中国贸易开放度、贸易结构与通货膨胀不确定性关系

完全预期到的通货膨胀在理论上并不会对真实经济活动产生实质性的影响,通货膨胀的真正危害在于它的不确定性。随着贸易开放的不断扩大和深化,影响中国通货膨胀的不确定性的因素变得更加复杂。本文利用EGARCH模型估计了中国的通货膨胀不确定性,并在此基础上利用协整分析方法检验了贸易开放度、贸易结构与通货膨胀不确定性的关系。研究表明:贸易开放度的提高对通货膨胀不确定性具有负向的影响;贸易结构的变化对通货膨胀不确定性具有正向的影响。     

Inflation and Unemployment in General Equilibrium*

When labor is indivisible, there exist efficient outcomes with some agents randomly unemployed, as in Rogerson (1988) . We integrate this idea into the modern theory of monetary exchange, where some trade occurs in centralized markets and some in decentralized markets, as in Lagos and Wright (2005) . This delivers a general equilibrium model of unemployment and money, with explicit microeconomic foundations. We show that the implied relation between inflation and unemployment can be positive or negative, depending on simple preference conditions. Our Phillips curve provides a long‐run, exploitable, trade‐off for monetary policy; it turns out, however, that the optimal policy is the Friedman rule.     

通货膨胀不确定性研究综述

通货膨胀不确定性的发生使价格信号失真,资源配置扭曲,是通货膨胀福利损失的真正症结所在.本文从通货膨胀不确定性的度量方法、通货膨胀和通货膨胀不确定性之间的关系、通货膨胀不确定性对实际经济的影响以及治理通货膨胀不确定性的货币政策等几个方面回顾通货膨胀不确定性的研究成果.为减轻通货膨胀不确定性对经济系统的危害,建议我国货币当局建立通货膨胀预期调查数据库,并把通货膨胀不确定性作为监督宏观经济运行的一项重要指标予以重点关注和有效控制,评价货币政策效果时把通货膨胀不确定性指标作为一个参考依据.更为重要的是,控制通货膨胀不确定性应成为政府治理通货膨胀的理论和政策基础.     

中国经济增长与通货膨胀间非对称关系的实证分析

利用1985—2012年中国主要宏观经济变量数据,采用门限自回归模型实证检验了通货膨胀对经济增长的非线性影响。研究结果表明,通货膨胀门限效应明显存在;在门限值以上,通货膨胀对经济增长起阻碍作用;在门限值以下,通货膨胀对经济增长起促进作用。在此基础上,利用平滑转换回归模型进一步检验了通货膨胀与经济增长之间的非线性关系,不同模型的实证结果都支持通货膨胀门限效应存在。     

利用时间序列分析股票价格和会计盈利的动态关系

本文应用最近发明的时间序列的计量经济学方法来检测股票价格和会计利润的动态关系，应用向量式的自回归模型，把它用于构建22家取自英国金融时报指数的英国顶级公司的股票价格和会计利润的信息的模型。力求建立一个多元的向量式自回归模型系统，并在此基础上建立一个向量式纠正误差模式，来模拟股票和盈利间的长短期关系，以此来确定它们中究竟哪个可作为内生变量和外生变量。然后利用方差的分解分析模型来确定一个单位的标准差的振动对这个系统的影响。同时本文还使用另一种方法做向量自回归系统的短期动态分析，即应用广义刺激反应模型进行分析。     

Inflation, Price Level and Hybrid Rules under Inflation Uncertainty

The performance and robustness of optimised interest rate rules are analysed in a New Keynesian model estimated for the euro area economy. In particular, we examine the properties of rules responding to inflation, the price level, or a combination of the two (a hybrid rule). All the rules also respond to the output gap. The optimal hybrid rule is only marginally superior when there is no model uncertainty. When there is uncertainty about the degree of inflation persistence, the inflation rule is the most robust rule and the performance of the other two rules deteriorates. However, all the rules perform well if the true degree of inflation persistence turns out to be less than policymakers’ estimate.     

The Relationship between Output and Unemployment with Efficiency Wages

Abstract. We construct a stylised model of the supply side with goods and labour market imperfections to show that an economy can rationally operate at a low-effort state in which the relationship between output and unemployment is positive. We examine data from the G7 countries over 1960–2001 and find that only German data strongly favour a persistent negative relationship between the level of output and rate of unemployment. The consequence of this is that circumstances exist in which market imperfections could pose serious obstacles to the smooth working of expansionary and/or stabilisation policies and a positive demand shock might have adverse effects on employment.     

The Inexorable and Mysterious Tradeoff Between Inflation and Unemployment

This paper discusses the short-run tradeoff between inflation and unemployment. Although this tradeoff remains a necessary building block of business cycle theory, economists have yet to provide a completely satisfactory explanation for it. According to the consensus view among central bankers and monetary economists, a contractionary monetary shock raises unemployment, at least temporarily, and leads to a delayed and gradual fall in inflation. Standard dynamic models of price adjustment, however, cannot explain this pattern of responses. Reconciling the consensus view about the effects of monetary policy with models of price adjustment remains an outstanding puzzle for business cycle theorists.     

中国货币供应、通货膨胀及经济增长关系实证研究

采用协整与方差分解的方法时中国货币供应、通货膨胀与经济增长的关系进行实证研究发现,通货膨胀与经济增长在短期和长期中作用关系相反,但都具有回归自然水平趋势,货币供应时通货膨胀和经济增长的影响具有滞后效应,长期内货币非中性。而通货膨胀和经济增长并不影响货币供应。一方面。应当采取措施降低货币供应增长率：另一方面,偏紧货币政策的滞后效应可能导致经济紧缩应当采取措施降低货币供应增长率,因此应谨慎调控宏观经济政策,以避免金融风险。