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Oil Price Density Forecasts: Exploring the Linkages with Stock Markets 石油价格密度预测:探索与股票市场的联系
Pub Date : 2012-12-05 DOI: 10.2139/ssrn.2269233
Marco J. Lombardi, F. Ravazzolo
In the recent years several commentators hinted at an increase of the correlation between equity and commodity prices, and blamed investment in commodity-related products for this. First, this paper investigates such claims by looking at various measures of correlation. Next, we assess to what extent correlations between oil and equity prices can be exploited for asset allocation. We develop a time-varying Bayesian Dynamic Conditional Correlation model for volatilities and correlations and find that joint modelling of oil and equity prices produces more accurate point and density forecasts for oil which lead to substantial benefits in portfolio wealth.
近年来,一些评论人士暗示,股票与大宗商品价格之间的相关性有所增强,并将其归咎于对大宗商品相关产品的投资。首先,本文通过观察各种相关措施来调查这种说法。接下来,我们评估石油和股票价格之间的相关性可以在多大程度上用于资产配置。我们开发了一个时变的贝叶斯动态条件相关模型,用于波动性和相关性,并发现石油和股票价格的联合建模可以产生更准确的石油点和密度预测,从而为投资组合财富带来可观的收益。
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引用次数: 6
Predicting Inflation: Portfolio Erosion or Collapse? 预测通货膨胀:投资组合侵蚀还是崩溃?
Pub Date : 2012-10-04 DOI: 10.2139/ssrn.2156966
George Crawford, J. Liew, A. Marks
What is the probability of high inflation; how high, when? These questions are important to all investors since even the 2% level to which we are accustomed will cut an investor’s portfolio by over 17% during a decade. This 2% level is the target of the Federal Reserve, along with near 0% interest rates, for a risk free rate of -2%. This guarantees portfolio erosion absent risk-taking, which could result in even lower returns if the risks of loss are realized. An AARP article characterizes this as The War On Savers. Higher inflation is possible, at 4% or more, with even worse effects. There are heated debates about the probability and timing of high inflation, but our review of the extensive literature reveals no reliable way to predict its onset or extent. Expert opinion predicts inflation best, but it has failed to predict the onset or extent of inflation, and past inflation predicts the experts’ estimates as well as the experts predict future inflation. Debt levels are very high, and inflation is one of the possibilities for deleveraging. The Japanese have proved that high debt can exist without inflation for at least a decade or two, at least in their particular circumstances. Our high debt levels are partly due to the housing collapse. We propose months of unsold housing inventory as an indicator likely to decline before a sustained housing rally, and shelter is both the largest single component of inflation and affects consumer wealth and psychology. We also propose that portfolio erosion through 2% inflation is likely to continue for the present, and that much higher inflation is unlikely until the economy strengthens, but that it remains a risk until deleveraging has occurred by some other means. We suggest monitoring banks’ Federal Reserve deposit levels, which are reported weekly, as another barometer of inflation risk. A portfolio invested in traditional liquid assets – stocks, bonds, and cash – is unlikely to weather high inflation intact; the extent of the damage to each of these asset categories varies widely among inflationary periods and is volatile within these periods.
高通胀的概率是多少?多高,什么时候?这些问题对所有投资者都很重要,因为即使是我们习惯的2%的水平也会在十年内使投资者的投资组合减少17%以上。这个2%的水平是美联储的目标,与接近0%的利率一起,无风险利率为-2%。这就保证了投资组合在没有承担风险的情况下受到侵蚀,如果损失的风险得以实现,这可能导致更低的回报。美国退休人员协会(AARP)的一篇文章将其描述为对储蓄者的战争。更高的通货膨胀率是可能的,达到4%或更高,其影响甚至更糟。关于高通货膨胀的可能性和时间有激烈的争论,但我们对大量文献的回顾显示,没有可靠的方法来预测其开始或程度。专家意见最能预测通货膨胀,但它无法预测通货膨胀的开始或程度,过去的通货膨胀既能预测专家的估计,也能预测专家对未来通货膨胀的预测。债务水平非常高,通胀是去杠杆化的可能性之一。日本已经证明,至少在他们的特殊情况下,高债务可以在没有通胀的情况下存在至少10年或20年。我们的高债务水平部分是由于房地产市场的崩溃。我们认为,在房价持续上涨之前,未售出房屋库存的月份可能会下降,住房既是通货膨胀的最大单一组成部分,也会影响消费者的财富和心理。我们还认为,目前2%的通胀率可能会继续侵蚀投资组合,在经济走强之前,通胀不太可能大幅上升,但在以其他方式实现去杠杆化之前,这仍然是一种风险。我们建议监测银行的美联储存款水平,这是通胀风险的另一个晴雨表,每周都会报告一次。投资于传统流动资产(股票、债券和现金)的投资组合不太可能毫发无损地经受住高通胀的考验;这些资产类别的损失程度在不同的通胀时期差别很大,并且在这些时期内是不稳定的。
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引用次数: 0
Asymmetric Quantile Persistence and Predictability: The Case of U.S. Inflation 不对称分位数持久性和可预测性:以美国通货膨胀为例
Pub Date : 2012-10-01 DOI: 10.2139/ssrn.2160422
S. Manzan, D. Zerom
The aim of this paper is to investigate the evidence and implications of time-variation and asymmetry in the persistence of U.S. inflation. We evaluate these features by comparing the out-of-sample forecast performance of two specifications, a Quantile Auto-Regressive (QAR) model and a parametric Auto-Regressive (AR) model in which the volatility of the errors depends on the level of inflation. The results of the comparison show that the parametric quantile forecasts are at least as accurate as the semi-parametric QAR model, in particular for the core inflation measures. This leads us to conclude that the persistence of core inflation can be considered constant and high, but declined for the headline inflation measures. In addition, we find that the recent findings of asymmetric persistence of inflation shocks can be mostly attributed to the positive relation between inflation level and its volatility.
本文的目的是研究美国通货膨胀持续存在的时间变化和不对称性的证据和影响。我们通过比较两种规格的样本外预测性能来评估这些特征,一种是分位数自回归(QAR)模型,另一种是参数自回归(AR)模型,其中误差的波动性取决于通货膨胀水平。对比结果表明,参数分位数预测至少与半参数QAR模型一样准确,特别是对于核心通胀指标。这使我们得出结论,核心通胀的持续可以被认为是稳定和高的,但总体通胀指标有所下降。此外,我们发现通货膨胀冲击的不对称持续性的最新发现可以主要归因于通货膨胀水平与其波动性之间的正相关关系。
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引用次数: 5
Uncertainty and Disagreement in Forecasting Inflation: Evidence from the Laboratory 预测通货膨胀的不确定性和分歧:来自实验室的证据
Pub Date : 2012-09-04 DOI: 10.2139/ssrn.1836455
D. Pfajfar, Blaž Žakelj
This paper compares the behavior of subject' uncertainty in different monetary policy environments when forecasting inflation in the laboratory. We find that inflation targeting produces lower uncertainty and higher accuracy of interval forecasts than inflation forecast targeting. We also establish several stylized facts about the behavior of individual uncertainty, aggregate distribution of forecasts,and disagreement between individuals. We find that the average confidence interval is the measure that performs best in forecasting inflation uncertainty. Subjects correctly perceive the underlying inflation uncertainty in only 60% of cases and tend to report asymmetric confidence intervals, perceiving higher uncertainty with respect to inflation increases.
本文比较了主体在不同货币政策环境下进行通货膨胀预测时的不确定性行为。我们发现通货膨胀目标制比通货膨胀目标制具有更低的不确定性和更高的区间预测精度。我们还建立了几个关于个体不确定性行为的程式化事实,预测的总体分布,以及个体之间的分歧。我们发现平均置信区间是预测通货膨胀不确定性的最佳度量。只有60%的受试者正确地感知到潜在的通货膨胀不确定性,并且倾向于报告不对称的置信区间,感知到通货膨胀增加的更高不确定性。
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引用次数: 15
Housing Price Forecastability: A Factor Analysis 房价可预测性:一个因素分析
Pub Date : 2012-08-16 DOI: 10.1111/1540-6229.12185
Lasse Bork, S. Møller
We examine U.S. housing price forecastability using principal component analysis (PCA), partial least squares (PLS), and sparse PLS (SPLS). We incorporate information from a large panel of 128 economic time series and show that macroeconomic fundamentals have strong predictive power for future movements in housing prices. We find that (S)PLS models systematically dominate PCA models. (S)PLS models also generate significant out-of-sample predictive power over and above the predictive power contained by the price-rent ratio, autoregressive benchmarks, and regression models based on small datasets.
我们使用主成分分析(PCA)、偏最小二乘(PLS)和稀疏PLS (SPLS)来检验美国房价的可预测性。我们整合了来自128个经济时间序列的信息,并表明宏观经济基本面对未来房价走势具有很强的预测能力。我们发现(S)PLS模型系统地优于PCA模型。(S)PLS模型也产生显著的样本外预测能力,高于价格租金比、自回归基准和基于小数据集的回归模型所包含的预测能力。
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引用次数: 48
Real Wages and Monetary Policy: A DSGE Approach 实际工资和货币政策:一种DSGE方法
Pub Date : 2012-02-28 DOI: 10.2139/ssrn.2012630
B. Perry, Kerk L. Phillips, David E. Spencer
Economists have long investigated the cyclical behavior of real wages in order to draw inferences regarding the relative stickiness of prices and wages. Recent studies have adopted techniques intended to identify monetary shocks and examined the response of real wages and output or employment to such shocks. A finding that real wages are procyclical in response to a positive monetary policy shock, for example, is taken as evidence that prices are stickier than wages. In this paper, we show that factors other than wage and price stickiness affect the response of real wages to a monetary policy shock. Accordingly, examining the response of real wages is not enough to sort out the relative stickiness of prices and wages. We use two prominent DSGE models to help us address this issue. These models incorporate both sticky wages and prices but in different ways. The first model (Huang, Liu, and Phaneuf, American Economic Review, 2004) is relatively simple and is not intended for policy analysis. Its relative simplicity allows us to approach the issues both analytically and through simulations. The second model (Smets and Wouters, American Economic Review, 2007) is a relatively complex model of the U.S. economy with many frictions and intended to be useful for policy analysis. Because of its complexity, we must rely principally on simulation exercises. Using these models we offer robust evidence that the real wage response to monetary policy is affected in important ways by properties of the economy other than stickiness of wages and prices, such as the importance of intermediate goods in the production process and the size of key elasticities. Consequently, we cannot appropriately infer the relative stickiness of wages and prices from examining only the response of real wages to a monetary policy shock.
长期以来,经济学家一直在研究实际工资的周期性行为,以得出有关价格和工资相对粘性的推论。最近的研究采用了旨在确定货币冲击的技术,并检查了实际工资和产出或就业对这种冲击的反应。例如,在积极的货币政策冲击下,实际工资是顺周期的,这一发现被认为是价格比工资更具粘性的证据。在本文中,我们证明了工资和价格粘性以外的因素会影响实际工资对货币政策冲击的反应。因此,考察实际工资的反应不足以理清价格和工资的相对粘性。我们使用两个突出的DSGE模型来帮助我们解决这个问题。这些模型结合了粘性工资和价格,但方式不同。第一个模型(Huang, Liu, and Phaneuf, American Economic Review, 2004)相对简单,不用于政策分析。它的相对简单性使我们能够通过分析和模拟来处理问题。第二个模型(Smets and Wouters, American Economic Review, 2007)是一个相对复杂的美国经济模型,有许多摩擦,旨在对政策分析有用。由于其复杂性,我们必须主要依靠模拟练习。使用这些模型,我们提供了强有力的证据,证明实际工资对货币政策的反应在重要方面受到经济属性的影响,而不是工资和价格的粘性,例如中间产品在生产过程中的重要性和关键弹性的大小。因此,我们不能仅仅通过考察实际工资对货币政策冲击的反应来适当地推断工资和价格的相对粘性。
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引用次数: 2
Using Textual Information in Econometrics: Quantifying Newspaper Sentiment 在计量经济学中使用文本信息:量化报纸情绪
Pub Date : 2012-02-05 DOI: 10.2139/ssrn.1999800
Maciej Kula
This paper uses artificial intelligence text analysis methods to construct indices of economic sentiment from a database of 47,000 articles from the Financial Times. The indices have high explanatory power for predicting Federal Open Market Committee interest rate decisions; the effect is both statistically and economically significant. This is partially explained by the incremental predictive power for economic growth the measures exhibit even when accounting for FOMC Greenbook forecasts. However, the FOMC is found to respond strongly even to uninformative components of newspaper sentiment. The result is therefore similar to Romer and Romer (2008), who find that the FOMC reacts to uninformative private forecasts.
本文使用人工智能文本分析方法,从英国《金融时报》4.7万篇文章的数据库中构建经济情绪指数。这些指标对预测联邦公开市场委员会利率决策具有较高的解释力;这种影响在统计学和经济学上都是显著的。这在一定程度上可以解释为,即使考虑到FOMC绿皮书的预测,这些指标对经济增长的预测能力也会增加。然而,人们发现,联邦公开市场委员会甚至对报纸情绪中不具信息性的成分也做出了强烈反应。因此,结果与罗默和罗默(2008)相似,他们发现联邦公开市场委员会对缺乏信息的私人预测做出反应。
{"title":"Using Textual Information in Econometrics: Quantifying Newspaper Sentiment","authors":"Maciej Kula","doi":"10.2139/ssrn.1999800","DOIUrl":"https://doi.org/10.2139/ssrn.1999800","url":null,"abstract":"This paper uses artificial intelligence text analysis methods to construct indices of economic sentiment from a database of 47,000 articles from the Financial Times. The indices have high explanatory power for predicting Federal Open Market Committee interest rate decisions; the effect is both statistically and economically significant. This is partially explained by the incremental predictive power for economic growth the measures exhibit even when accounting for FOMC Greenbook forecasts. However, the FOMC is found to respond strongly even to uninformative components of newspaper sentiment. The result is therefore similar to Romer and Romer (2008), who find that the FOMC reacts to uninformative private forecasts.","PeriodicalId":445951,"journal":{"name":"ERN: Forecasting & Simulation (Prices) (Topic)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130383780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Bayesian Evaluation of Alternative Models of Trend Inflation 趋势通货膨胀备选模型的贝叶斯评价
Pub Date : 2011-12-30 DOI: 10.26509/WP-201134
Todd E. Clark, Tae-Yong Doh
With the concept of trend inflation now widely understood as to be important as a measure of the public's perception of the inflation goal of the central bank and important to the accuracy of longer-term inflation forecasts, this paper uses Bayesian methods to assess alternative models of trend inflation. Reflecting models common in reduced-form inflation modeling and forecasting, we specify a range of models of inflation, including: AR with constant trend; AR with trend equal to last period's inflation rate; local level model; AR with random walk trend; AR with trend equal to the long-run expectation from the Survey of Professional Forecasters; and AR with time-varying parameters. We consider versions of the models with constant shock variances and with stochastic volatility. We first use Bayesian metrics to compare the fits of the alternative models. We then use Bayesian methods of model averaging to account for uncertainty surrounding the model of trend inflation, to obtain an alternative estimate of trend inflation in the U.S. and to generate medium-term, model-average forecasts of inflation. Our analysis yields two broad results. First, in model fit and density forecast accuracy, models with stochastic volatility consistently dominate those with constant volatility. Second, for the specification of trend inflation, it is difficult to say that one model of trend inflation is the best. Among alternative models of the trend in core PCE inflation, the local level specification of Stock and Watson (2007) and the survey-based trend specification are about equally good. Among competing models of trend GDP inflation, several trend specifications seem to be about equally good.
随着趋势通胀的概念现在被广泛理解为是衡量公众对央行通胀目标的看法的重要指标,对长期通胀预测的准确性也很重要,本文使用贝叶斯方法来评估趋势通胀的替代模型。为了反映简化形式的通货膨胀建模和预测中常见的模型,我们指定了一系列通货膨胀模型,包括:具有恒定趋势的AR;趋势等于上期通货膨胀率的应收帐款;局部级模型;随机游走趋势的AR;趋势与专业预测者调查的长期预期相等的AR;参数时变的AR。我们考虑具有恒定冲击方差和随机波动的模型版本。我们首先使用贝叶斯度量来比较备选模型的拟合。然后,我们使用贝叶斯模型平均方法来解释围绕趋势通货膨胀模型的不确定性,以获得对美国趋势通货膨胀的另一种估计,并生成中期通货膨胀的模型平均预测。我们的分析得出了两个广泛的结果。首先,在模型拟合和密度预测精度上,随机波动率模型始终优于恒定波动率模型。其次,对于趋势通货膨胀的规格,很难说一种趋势通货膨胀模型是最好的。在核心个人消费支出通胀趋势的替代模型中,Stock和Watson(2007)的地方水平规范和基于调查的趋势规范几乎同样好。在相互竞争的趋势GDP通胀模型中,有几个趋势指标似乎同样好。
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引用次数: 37
Inefficiency in Macroeconomic News Forecasts: Effects on Asset Prices and Asset Allocation Rules 宏观经济新闻预测的低效率:对资产价格和资产配置规则的影响
Pub Date : 2011-12-01 DOI: 10.2139/ssrn.2076074
João Vasco Tavares da Luz Soares, David Cardoso
This paper tests the efficiency of macroeconomic forecasts, contributing to the existing literature using a rolling-event approach. We construct a monthly economic surprises index, aggregating several macroeconomic news surprises for the nine largest economic areas (G9), which we further analyze the impact on stock, bonds and foreign exchange markets using monthly data. Consequently we extend both research branches mostly focused on efficiency analysis and event studies in macroeconomic news impact. Consistently with the slow adjustment of analysts to news, our results suggest the existence of persistent unexpected economic surprises, presenting a strong autocorrelation for the aggregated G9 economic areas and, individually for USA, Eurozone and Japan. Business cycle decomposition shows that this is more intense in recession phases. Moreover, we provide evidence of a significant relation between economic news surprises and the returns of bond and stock markets. At last, a comparative study of investment decisions and asset allocation rules is also provided, concluding that past economic surprises can be used to predict future returns, providing stronger hit-ratios and higher returns than buy-and-hold and auto-regressive based strategies.
本文检验了宏观经济预测的有效性,对现有文献使用滚动事件方法做出了贡献。我们构建了一个月度经济意外指数,汇总了九个最大经济体(G9)的几个宏观经济新闻意外,并使用月度数据进一步分析了这些意外对股票、债券和外汇市场的影响。因此,我们扩展了两个研究分支,主要集中在宏观经济新闻影响的效率分析和事件研究。与分析师对新闻的缓慢调整一致,我们的结果表明,持续存在意想不到的经济惊喜,对9国集团经济区域以及美国、欧元区和日本单独呈现出很强的自相关性。商业周期分解表明,这种情况在衰退阶段更为严重。此外,我们还提供了经济新闻意外与债券和股票市场回报之间存在显著关系的证据。最后,对投资决策和资产配置规则进行了比较研究,得出结论认为,过去的经济意外可以用来预测未来的回报,比买入并持有和基于自回归的策略提供更强的命中率和更高的回报。
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引用次数: 1
Those Unpredictable Recessions 那些不可预测的衰退
Pub Date : 2011-11-30 DOI: 10.2139/ssrn.1996991
S. Smirnov
Contemporary global economic life is measured in days and hours, but most common economic indicators have inevitable lags of months and sometimes quarters (GDP). Moreover, the real-time picture of economic dynamics may differ in some sense from the same picture in its historical perspective, because all fluctuations receive their proper weights only in the context of the whole. Therefore, it’s important to understand whether the existing indicators are really capable of providing important information for decision-makers. In other words, could they be useful in real-time? Why then was it so difficult for the experts to recognize the turning points in real time? What hampers this ability to recognize? Can a turning points’ forecast be entirely objective? The paper answers these questions in terms of three cyclical indicators for the USA (LEI by the Conference Board, CLI by OECD and PMI by ISM) during the last 2008–2009 recession
当代全球经济生活是以天为单位,以小时为单位来衡量的,但大多数常见的经济指标都不可避免地存在几个月甚至几个季度(GDP)的滞后。此外,经济动态的实时图景在某种意义上可能与历史视角的相同图景有所不同,因为所有波动只有在整体背景下才会得到适当的权重。因此,了解现有指标是否真的能够为决策者提供重要信息是很重要的。换句话说,它们能实时发挥作用吗?那么,为什么专家们很难实时发现转折点呢?是什么阻碍了这种识别能力?拐点预测能完全客观吗?本文根据2008-2009年经济衰退期间美国的三个周期性指标(世界大型企业联合会的LEI、经合组织的CLI和ISM的PMI)回答了这些问题
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引用次数: 2
期刊
ERN: Forecasting & Simulation (Prices) (Topic)
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