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Estimating Linear Dynamic Panels with Recentered Moments 利用重定向矩估计线性动态面板
IF 1.5 Q3 ECONOMICS Pub Date : 2024-01-17 DOI: 10.3390/econometrics12010003
Yong Bao
This paper proposes estimating linear dynamic panels by explicitly exploiting the endogeneity of lagged dependent variables and expressing the cross moments between the endogenous lagged dependent variables and disturbances in terms of model parameters. These moments, when recentered, form the basis for model estimation. The resulting estimator's asymptotic properties are derived under different asymptotic regimes (large number of cross-sectional units or long time spans), stable conditions (with or without a unit root), and error characteristics (homoskedasticity or heteroskedasticity of different forms). Monte Carlo experiments show that it has very good finite-sample performance.
本文提出通过明确利用滞后因变量的内生性,并用模型参数表示内生滞后因变量与干扰之间的交叉矩来估计线性动态面板。这些矩经重定向后构成模型估计的基础。由此得出的估计器在不同渐近制度(大量横截面单位或长时间跨度)、稳定条件(有或无单位根)和误差特征(不同形式的同方差或异方差)下的渐近特性。蒙特卡罗实验表明,它具有非常好的有限样本性能。
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引用次数: 0
Is Monetary Policy a Driver of Cryptocurrencies? Evidence from a Structural Break GARCH-MIDAS Approach 货币政策是加密货币的驱动力吗?来自结构性中断 GARCH-MIDAS 方法的证据
IF 1.5 Q3 ECONOMICS Pub Date : 2024-01-05 DOI: 10.3390/econometrics12010002
Md Samsul Alam, Alessandra Amendola, Vincenzo Candila, Shahram Dehghan Jabarabadi
The introduction of Bitcoin as a distributed peer-to-peer digital cash in 2008 and its first recorded real transaction in 2010 served the function of a medium of exchange, transforming the financial landscape by offering a decentralized, peer-to-peer alternative to conventional monetary systems. This study investigates the intricate relationship between cryptocurrencies and monetary policy, with a particular focus on their long-term volatility dynamics. We enhance the GARCH-MIDAS (Mixed Data Sampling) through the adoption of the SB-GARCH-MIDAS (Structural Break Mixed Data Sampling) to analyze the daily returns of three prominent cryptocurrencies (Bitcoin, Binance Coin, and XRP) alongside monthly monetary policy data from the USA and South Africa with respect to potential presence of a structural break in the monetary policy, which provided us with two GARCH-MIDAS models. As of 30 June 2022, the most recent data observation for all samples are noted, although it is essential to acknowledge that the data sample time range varies due to differences in cryptocurrency data accessibility. Our research incorporates model confidence set (MCS) procedures and assesses model performance using various metrics, including AIC, BIC, MSE, and QLIKE, supplemented by comprehensive residual diagnostics. Notably, our analysis reveals that the SB-GARCH-MIDAS model outperforms others in forecasting cryptocurrency volatility. Furthermore, we uncover that, in contrast to their younger counterparts, the long-term volatility of older cryptocurrencies is sensitive to structural breaks in exogenous variables. Our study sheds light on the diversification within the cryptocurrency space, shaped by technological characteristics and temporal considerations, and provides practical insights, emphasizing the importance of incorporating monetary policy in assessing cryptocurrency volatility. The implications of our study extend to portfolio management with dynamic consideration, offering valuable insights for investors and decision-makers, which underscores the significance of considering both cryptocurrency types and the economic context of host countries.
比特币作为一种分布式点对点数字现金于 2008 年问世,并于 2010 年首次记录了真实交易,发挥了交换媒介的功能,通过提供一种去中心化、点对点的传统货币体系替代品,改变了金融格局。本研究调查了加密货币与货币政策之间错综复杂的关系,尤其关注其长期波动动态。我们通过采用 SB-GARCH-MIDAS(结构性断裂混合数据采样)来增强 GARCH-MIDAS(混合数据采样),分析三种著名加密货币(比特币、Binance Coin 和 XRP)的日收益率以及美国和南非的月度货币政策数据,研究货币政策中是否存在潜在的结构性断裂,从而为我们提供两个 GARCH-MIDAS 模型。截至 2022 年 6 月 30 日,所有样本的最新数据观测值均已注明,但必须承认的是,由于加密货币数据获取途径的不同,数据样本的时间范围也不尽相同。我们的研究结合了模型置信集(MCS)程序,并使用各种指标评估模型性能,包括 AIC、BIC、MSE 和 QLIKE,并辅以全面的残差诊断。值得注意的是,我们的分析表明,SB-GARCH-MIDAS 模型在预测加密货币波动性方面优于其他模型。此外,我们还发现,与较年轻的加密货币相比,较老加密货币的长期波动性对外生变量的结构性断裂很敏感。我们的研究揭示了加密货币领域内由技术特征和时间因素形成的多样化,并提供了实用的见解,强调了在评估加密货币波动性时纳入货币政策的重要性。我们研究的意义延伸到考虑动态因素的投资组合管理,为投资者和决策者提供了宝贵的见解,强调了同时考虑加密货币类型和东道国经济背景的重要性。
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引用次数: 0
Publisher’s Note: Econometrics—A New Era for a Well-Established Journal 出版者评论:《计量经济学》--一本历史悠久期刊的新纪元
IF 1.5 Q3 ECONOMICS Pub Date : 2023-12-28 DOI: 10.3390/econometrics12010001
Peter Roth
Throughout its lifespan, a journal goes through many phases—and Econometrics (Econometrics Homepage n [...]
一份期刊在其生命周期中会经历许多阶段--《计量经济学》(Econometrics Homepage n [...]
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引用次数: 0
Multistep Forecast Averaging with Stochastic and Deterministic Trends 采用随机和确定趋势的多步预测平均法
IF 1.5 Q3 ECONOMICS Pub Date : 2023-12-15 DOI: 10.3390/econometrics11040028
Mohitosh Kejriwal, Linh Nguyen, Xuewen Yu
This paper presents a new approach to constructing multistep combination forecasts in a nonstationary framework with stochastic and deterministic trends. Existing forecast combination approaches in the stationary setup typically target the in-sample asymptotic mean squared error (AMSE), relying on its approximate equivalence with the asymptotic forecast risk (AFR). Such equivalence, however, breaks down in a nonstationary setup. This paper develops combination forecasts based on minimizing an accumulated prediction errors (APE) criterion that directly targets the AFR and remains valid whether the time series is stationary or not. We show that the performance of APE-weighted forecasts is close to that of the optimal, infeasible combination forecasts. Simulation experiments are used to demonstrate the finite sample efficacy of the proposed procedure relative to Mallows/Cross-Validation weighting that target the AMSE as well as underscore the importance of accounting for both persistence and lag order uncertainty. An application to forecasting US macroeconomic time series confirms the simulation findings and illustrates the benefits of employing the APE criterion for real as well as nominal variables at both short and long horizons. A practical implication of our analysis is that the degree of persistence can play an important role in the choice of combination weights.
本文提出了一种在具有随机和确定趋势的非稳态框架下构建多步骤组合预测的新方法。静态设置下的现有预测组合方法通常以样本内渐近均方误差(AMSE)为目标,依赖于其与渐近预测风险(AFR)的近似等价性。然而,这种等价关系在非平稳设置中会被打破。本文基于最小化累积预测误差(APE)准则来开发组合预测,该准则直接针对 AFR,且无论时间序列是否静态都有效。我们证明了 APE 加权预测的性能接近于不可行的最优组合预测。模拟实验证明,相对于以 AMSE 为目标的 Mallows/Cross-Validation 加权法,所提出的程序具有有限样本的功效,并强调了考虑持续性和滞后阶次不确定性的重要性。对美国宏观经济时间序列的预测应用证实了模拟结果,并说明了在短期和长期范围内对实际变量和名义变量采用 APE 标准的好处。我们分析的一个实际意义是,持久性程度可以在组合权重的选择中发挥重要作用。
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引用次数: 0
Liquidity and Business Cycles—With Occasional Disruptions 流动性与商业周期--偶有中断
IF 1.5 Q3 ECONOMICS Pub Date : 2023-12-12 DOI: 10.3390/econometrics11040027
Willi Semmler, Gabriel R. Padró Rosario, Levent Koçkesen
Some financial disruptions that started in California, U.S., in March 2023, resulting in the closure of several medium-size U.S. banks, shed new light on the role of liquidity in business cycle dynamics. In the normal path of the business cycle, liquidity and output mutually interact. Small shocks generally lead to mean reversion through market forces, as a low degree of liquidity dissipation does not significantly disrupt the economic dynamics. However, larger shocks and greater liquidity dissipation arising from runs on financial institutions and contagion effects can trigger tipping points, financial disruptions, and economic downturns. The latter poses severe challenges for Central Banks, which during normal times, usually maintain a hands-off approach with soft regulation and monitoring, allowing the market to operate. However, in severe times of liquidity dissipation, they must swiftly restore liquidity flows and rebuild trust in stability to avoid further disruptions and meltdowns. In this paper, we present a nonlinear model of the liquidity–macro interaction and econometrically explore those types of dynamic features with data from the U.S. economy. Guided by a theoretical model, we use nonlinear econometric methods of a Smooth Transition Regression type to study those features, which provide and suggest further regulation and monitoring guidelines and institutional enforcement of rules.
2023 年 3 月,美国加利福尼亚州发生了一些金融混乱,导致美国几家中型银行倒闭,这使人们对流动性在商业周期动态中的作用有了新的认识。在商业周期的正常路径中,流动性与产出相互影响。小规模冲击一般会通过市场力量导致均值回归,因为低程度的流动性耗散不会显著扰乱经济动态。然而,金融机构挤兑和传染效应导致的更大冲击和更严重的流动性耗散会引发临界点、金融混乱和经济衰退。后者给中央银行带来了严峻挑战,因为在正常时期,中央银行通常会采取放手不管的做法,进行软监管和监测,让市场运作。然而,在流动性严重流失时,中央银行必须迅速恢复流动性,重建对稳定的信任,以避免进一步的混乱和崩溃。在本文中,我们提出了一个流动性与宏观互动的非线性模型,并利用美国经济数据从经济学角度探讨了这些类型的动态特征。在理论模型的指导下,我们使用平滑过渡回归类型的非线性计量经济学方法来研究这些特征,从而提供并建议进一步的监管和监督准则以及规则的制度执行。
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引用次数: 0
When It Counts—Econometric Identification of the Basic Factor Model Based on GLT Structures 当它计数——基于GLT结构的基本因子模型的计量经济学识别
IF 1.5 Q3 ECONOMICS Pub Date : 2023-11-20 DOI: 10.3390/econometrics11040026
Sylvia Frühwirth-Schnatter, Darjus Hosszejni, Hedibert Freitas Lopes
Despite the popularity of factor models with simple loading matrices, little attention has been given to formally address the identifiability of these models beyond standard rotation-based identification such as the positive lower triangular (PLT) constraint. To fill this gap, we review the advantages of variance identification in simple factor analysis and introduce the generalized lower triangular (GLT) structures. We show that the GLT assumption is an improvement over PLT without compromise: GLT is also unique but, unlike PLT, a non-restrictive assumption. Furthermore, we provide a simple counting rule for variance identification under GLT structures, and we demonstrate that within this model class, the unknown number of common factors can be recovered in an exploratory factor analysis. Our methodology is illustrated for simulated data in the context of post-processing posterior draws in sparse Bayesian factor analysis.
尽管具有简单加载矩阵的因子模型很受欢迎,但除了标准的基于旋转的识别(如正下三角(PLT)约束)之外,很少有人注意正式解决这些模型的可识别性。为了填补这一空白,我们回顾了方差识别在简单因子分析中的优势,并引入了广义下三角结构(GLT)。我们证明GLT假设是对PLT的改进而不妥协:GLT也是唯一的,但与PLT不同,GLT是一个非限制性假设。此外,我们为GLT结构下的方差识别提供了一个简单的计数规则,并证明在该模型类中,可以通过探索性因子分析恢复未知数量的公共因子。我们的方法说明了在稀疏贝叶斯因子分析的后处理后验图背景下的模拟数据。
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引用次数: 0
On the Proper Computation of the Hausman Test Statistic in Standard Linear Panel Data Models: Some Clarifications and New Results 标准线性面板数据模型中豪斯曼检验统计量的正确计算:一些澄清和新结果
Q3 ECONOMICS Pub Date : 2023-11-08 DOI: 10.3390/econometrics11040025
Julie Le Gallo, Marc-Alexandre Sénégas
We provide new analytical results for the implementation of the Hausman specification test statistic in a standard panel data model, comparing the version based on the estimators computed from the untransformed random effects model specification under Feasible Generalized Least Squares and the one computed from the quasi-demeaned model estimated by Ordinary Least Squares. We show that the quasi-demeaned model cannot provide a reliable magnitude when implementing the Hausman test in a finite sample setting, although it is the most common approach used to produce the test statistic in econometric software. The difference between the Hausman statistics computed under the two methods can be substantial and even lead to opposite conclusions for the test of orthogonality between the regressors and the individual-specific effects. Furthermore, this difference remains important even with large cross-sectional dimensions as it mainly depends on the within-between structure of the regressors and on the presence of a significant correlation between the individual effects and the covariates in the data. We propose to supplement the test outcomes that are provided in the main econometric software packages with some metrics to address the issue at hand.
我们提供了在标准面板数据模型中实现Hausman规格检验统计量的新的分析结果,比较了基于可行广义最小二乘法下未变换随机效应模型规格估计量的版本和基于普通最小二乘法估计的准退化模型估计量的版本。我们表明,在有限样本设置中实施豪斯曼检验时,准退化模型不能提供可靠的大小,尽管它是计量经济学软件中用于产生检验统计量的最常用方法。两种方法计算的Hausman统计量之间的差异可能是巨大的,甚至导致相反的结论,用于检验回归量和个体特异性效应之间的正交性。此外,即使具有较大的横截面尺寸,这种差异仍然很重要,因为它主要取决于回归量的内部结构以及个体效应与数据中协变量之间存在显著相关性。我们建议用一些度量标准来补充主要计量经济学软件包中提供的测试结果,以解决手头的问题。
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引用次数: 0
Dirichlet Process Log Skew-Normal Mixture with a Missing-at-Random-Covariate in Insurance Claim Analysis 保险索赔分析中缺少随机协变量的Dirichlet过程对数偏正态混合物
Q3 ECONOMICS Pub Date : 2023-10-12 DOI: 10.3390/econometrics11040024
Minkun Kim, David Lindberg, Martin Crane, Marija Bezbradica
In actuarial practice, the modeling of total losses tied to a certain policy is a nontrivial task due to complex distributional features. In the recent literature, the application of the Dirichlet process mixture for insurance loss has been proposed to eliminate the risk of model misspecification biases. However, the effect of covariates as well as missing covariates in the modeling framework is rarely studied. In this article, we propose novel connections among a covariate-dependent Dirichlet process mixture, log-normal convolution, and missing covariate imputation. As a generative approach, our framework models the joint of outcome and covariates, which allows us to impute missing covariates under the assumption of missingness at random. The performance is assessed by applying our model to several insurance datasets of varying size and data missingness from the literature, and the empirical results demonstrate the benefit of our model compared with the existing actuarial models, such as the Tweedie-based generalized linear model, generalized additive model, or multivariate adaptive regression spline.
在精算实践中,由于复杂的分布特征,与某一保单相关的总损失建模是一项艰巨的任务。在最近的文献中,Dirichlet过程混合保险损失的应用已被提出,以消除模型错规范偏差的风险。然而,对协变量和缺失协变量在建模框架中的作用研究较少。在本文中,我们提出了协变量相关的狄利克雷过程混合物,对数正态卷积和缺失协变量插值之间的新联系。作为一种生成方法,我们的框架对结果和协变量的联合进行建模,使我们能够在随机缺失的假设下推算缺失的协变量。通过将我们的模型应用于文献中不同规模和数据缺失的几个保险数据集来评估性能,实证结果表明,与现有的精算模型(如基于tweedie的广义线性模型、广义加性模型或多元自适应回归样条)相比,我们的模型具有优势。
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引用次数: 0
A New Matrix Statistic for the Hausman Endogeneity Test under Heteroskedasticity 异方差下Hausman内生性检验的一种新的矩阵统计量
Q3 ECONOMICS Pub Date : 2023-10-10 DOI: 10.3390/econometrics11040023
Alecos Papadopoulos
We derive a new matrix statistic for the Hausman test for endogeneity in cross-sectional Instrumental Variables estimation, that incorporates heteroskedasticity in a natural way and does not use a generalized inverse. A Monte Carlo study examines the performance of the statistic for different heteroskedasticity-robust variance estimators and different skedastic situations. We find that the test statistic performs well as regards empirical size in almost all cases; however, as regards empirical power, how one corrects for heteroskedasticity matters. We also compare its performance with that of the Wald statistic from the augmented regression setup that is often used for the endogeneity test, and we find that the choice between them may depend on the desired significance level of the test.
我们为横截面工具变量估计中的内生性Hausman检验导出了一个新的矩阵统计量,它以自然的方式包含异方差,而不使用广义逆。蒙特卡罗研究检验了统计量在不同异方差-稳健方差估计器和不同偏差情况下的性能。我们发现,在几乎所有情况下,检验统计量在经验规模方面表现良好;然而,就经验力量而言,如何校正异方差很重要。我们还将其性能与通常用于内生性检验的增强回归设置的Wald统计量的性能进行了比较,我们发现它们之间的选择可能取决于测试的期望显著性水平。
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引用次数: 0
Evaluation of the Labour Market Situation of Young People in EU Countries – The Multiple Regression Approach 欧盟国家青年劳动力市场状况评估--多元回归法
IF 1.5 Q3 ECONOMICS Pub Date : 2023-09-01 DOI: 10.15611/eada.2023.3.03
Magdalena Kawecka
Abstract The article considers the problems of young people aged 20-24 on the labour market affected by unemployment in European Union countries. Unemployment is one of the most important economic and social problems, which at the same time constitutes one of the biggest measures characterising the condition of the economy. The diversity of the economic situation in EU countries directly affects young people, an individual group of people entering the labour market and have little or no professional experience. At the same time, they are ready to start work, facing great difficulties in entering the market, influenced by socio-economic as well as demographic factors which directly and indirectly affect employment. Considering the above premise, the aim of the article was to identify the determinants of unemployment of young people aged 20-24 in the EU. The study used data from two years: 2010 and 2020, and applied multiple regression. Statistical data were taken from Eurostat databases. The study allowed to examine the dependence of the influence of individual socioeconomic as well as demographic factors on youth unemployment. The study found that the multivariate regression showed that factors related to young people's participation in education and training (including the NEET rate) relative to labour market status, as well as social inclusion, had a significant impact on the unemployment studied. Over the decade, a decrease was seen in unemployment in most EU member states, in as many as 19 countries, while the remaining eight countries showed an increase.
摘要 本文探讨了欧盟国家受失业影响的 20-24 岁青年在劳动力市场上的问题。失业是最重要的经济和社会问题之一,同时也是反映经济状况的最大指标之一。欧盟国家经济形势的多样性直接影响到年轻人,他们是进入劳动力市场的一个单独群体,几乎没有专业经验。同时,他们已经做好了开始工作的准备,在进入市场时面临着巨大的困难,受到社会经济和人口因素的影响,这些因素直接或间接地影响着就业。考虑到上述前提,本文旨在确定欧盟 20-24 岁年轻人失业的决定因素。研究使用了 2010 年和 2020 年两年的数据,并采用了多元回归法。统计数据来自欧盟统计局数据库。通过这项研究,可以检查个别社会经济因素和人口因素对青年失业率影响的依赖性。研究发现,多元回归显示,与劳动力市场状况相关的青年参与教育和培训(包括 NEET 率)以及社会包容等因素对所研究的失业率有重大影响。在这十年中,大多数欧盟成员国的失业率都有所下降,多达 19 个国家,而其余 8 个国家的失业率则有所上升。
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引用次数: 0
期刊
Econometrics
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