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Experimental UK Regional Consumer Price Inflation with Model-Based Expenditure Weights 基于模型支出权重的实验性英国地区消费者价格通胀
IF 1.1 4区 数学 Q3 Mathematics Pub Date : 2022-03-01 DOI: 10.2478/jos-2022-0010
J. Dawber, Nora Würz, Paul A. Smith, Tanya Flower, Heledd Thomas, T. Schmid, N. Tzavidis
Abstract Like many other countries, the United Kingdom (UK) produces a national consumer price index (CPI) to measure inflation. Presently, CPI measures are not produced for regions within the UK. It is believed that, using only available data sources, a regional CPI would not be precise or reliable enough as an official statistic, primarily because the regional partitioning of the data makes sample sizes too small. We investigate this claim by producing experimental regional CPIs using publicly available price data, and deriving expenditure weights from the Living Costs and Food survey. We detail the methods and challenges of developing a regional CPI and evaluate its reliability. We then assess whether model-based methods such as smoothing and small area estimation significantly improve the measures. We find that a regional CPI can be produced with available data sources, however it appears to be excessively volatile over time, mainly due to the weights. Smoothing and small area estimation improve the reliability of the regional CPI series to some extent but they remain too volatile for regional policy use. This research provides a valuable framework for the development of a more viable regional CPI measure for the UK in the future.
摘要与许多其他国家一样,英国制定了一个全国消费者价格指数来衡量通货膨胀。目前,还没有针对英国各地区制定CPI指标。人们认为,仅使用可用的数据来源,地区CPI作为官方统计数据不够精确或可靠,主要是因为数据的地区划分使样本量太小。我们通过使用公开的价格数据制作实验性区域CPI,并从生活成本和食品调查中得出支出权重,来调查这一说法。我们详细介绍了制定区域CPI的方法和挑战,并评估了其可靠性。然后,我们评估基于模型的方法(如平滑和小面积估计)是否显著改进了测量。我们发现,区域CPI可以通过可用的数据来源产生,但随着时间的推移,它似乎过于波动,主要是由于权重。平滑和小面积估计在一定程度上提高了区域CPI序列的可靠性,但对于区域政策的使用来说,它们仍然太不稳定。这项研究为英国未来制定更可行的地区CPI指标提供了一个有价值的框架。
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引用次数: 1
Using Scanner Data for Computing Consumer Spatial Price Indexes at Regional Level: An Empirical Application for Grocery Products in Italy 使用扫描仪数据计算区域层面的消费者空间价格指数:意大利杂货产品的实证应用
IF 1.1 4区 数学 Q3 Mathematics Pub Date : 2022-03-01 DOI: 10.2478/jos-2022-0003
T. Laureti, F. Polidoro
Abstract The importance of constructing sub-national spatial price indexes (SPIs) has been acknowledged in the literature for over two decades. However, systematic attempts to compile sub-national SPIs on a regular basis have been hampered by the labour-intensive analyses required for processing traditional price data. In the case of household consumption expenditures, the increasing availability of big data may change the current approach for estimating sub-national SPIs by considering the use of weighted index formulae. The aim of this paper is twofold: firstly, to review previous literature on sub-national SPIs and secondly to estimate Italian consumer SPIs. To this aim we use scanner data referring to grocery products sold in a random sample of approximately 1,800 Italian outlets belonging to the most important retail chains and including information on prices, quantities and quality characteristics of products at barcode level. Various weighted index formulas are used for calculating consumer SPIs at detailed territorial level and at the lowest aggregation level. Our results show an interesting territorial variability of consumer prices of products sold in large-scale retail outlets across the Italian regions. Overall, the Southern regions appear to have price levels below the national average both for food and non-food products with some interesting exceptions.
构建次国家级空间价格指数(SPIs)的重要性在过去二十多年的文献中得到了认可。然而,由于处理传统价格数据所需的劳力密集分析,定期编制地方一级消费价格指数的系统努力受到了阻碍。就家庭消费支出而言,大数据的日益可用性可能会改变目前通过考虑使用加权指数公式来估计地方消费指数的方法。本文的目的是双重的:首先,回顾以前的文献对次国家的SPIs,其次估计意大利消费者的SPIs。为此,我们使用扫描器数据,指的是在大约1800家意大利最重要的零售连锁店的随机样本中销售的杂货产品,包括条形码级别产品的价格、数量和质量特征信息。使用各种加权指数公式来计算详细区域水平和最低聚集水平的消费者消费指数。我们的研究结果显示,意大利各地区大型零售店销售的产品的消费者价格存在有趣的地域差异。总的来说,南方地区的食品和非食品的价格水平似乎都低于全国平均水平,但也有一些有趣的例外。
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引用次数: 2
Estimating Weights for Web-Scraped Data in Consumer Price Indices 消费者价格指数中网络抓取数据的权重估计
IF 1.1 4区 数学 Q3 Mathematics Pub Date : 2022-03-01 DOI: 10.2478/jos-2022-0002
D. Ayoubkhani, Heledd Thomas
Abstract In recent years, there has been much interest among national statistical agencies in using web-scraped data in consumer price indices, potentially supplementing or replacing manually collected price quotes. Yet one challenge that has received very little attention to date is the estimation of expenditure weights in the absence of quantity information, which would enable the construction of weighted item-level price indices. In this article we propose the novel approach of predicting sales quantities from their ranks (for example, when products are sorted ‘by popularity’ on consumer websites) via appropriate statistical distributions. Using historical transactional data supplied by a UK retailer for two consumer items, we assessed the out-of-sample accuracy of the Pareto, log-normal and truncated log-normal distributions, finding that the last of these resulted in an index series that most closely approximated an expenditure-weighted benchmark. Our results demonstrate the value of supplementing web-scraped price quotes with a simple set of retailer-supplied summary statistics relating to quantities, allowing statistical agencies to realise the benefits of freely available internet data whilst placing minimal burden on retailers. However, further research would need to be undertaken before the approach could be implemented in the compilation of official price indices.
近年来,国家统计机构对在消费者价格指数中使用网络抓取数据非常感兴趣,可能会补充或取代人工收集的价格报价。然而,迄今为止很少受到注意的一项挑战是在缺乏数量资料的情况下估计支出权重,这将使建立加权项目一级价格指数成为可能。在本文中,我们提出了一种新颖的方法,通过适当的统计分布从它们的排名中预测销量(例如,当产品在消费者网站上“按受欢迎程度”排序时)。使用一家英国零售商提供的两种消费品的历史交易数据,我们评估了帕累托、对数正态分布和截断对数正态分布的样本外准确性,发现最后一种分布产生了最接近支出加权基准的指数系列。我们的研究结果表明,用一组简单的零售商提供的与数量相关的汇总统计数据来补充网络报价的价值,使统计机构能够实现免费提供互联网数据的好处,同时将零售商的负担降到最低。但是,在编制官方价格指数时采用这种方法之前,还需要进行进一步的研究。
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引用次数: 1
Unit Value Indexes for Exports – New Developments Using Administrative Trade Data 出口单位价值指数-使用行政贸易数据的新发展
IF 1.1 4区 数学 Q3 Mathematics Pub Date : 2022-03-01 DOI: 10.2478/jos-2022-0005
Don Fast, S. Fleck, Dominic A Smith
Abstract U.S. import and export price indexes replaced unit value indexes forty years ago, given quality concerns of mismeasurement due to unit value bias. The administrative trade data underlying the unit values have greatly improved since that time. The transaction records are now more detailed, available electronically, and compiled monthly with little delay. The data are used by academic researchers to calculate price measures, and unit value indexes based on trade data are used by other national statistical offices (NSOs). The U.S. Bureau of Labor Statistics is now evaluating whether replacing price indexes with unit value indexes for homogeneous products calculated from administrative trade data could expand the number of published official import and export price indexes. Using export transactions, the research calculates detailed unit value indexes from 200 + million trade records from 2012–2017 for 123 export product categories. Results show that 27 of the 123 unit value indexes are homogeneous and closely comparable to published official price indexes. This article presents the concepts and methods considered to calculate and evaluate the unit value indexes and to select the product categories that are homogeneous. Compared to official price indexes, export unit value indexes for the 27 5-digit BEA (U.S. Bureau of Economic Analysis) end-use product categories would deflate real exports of these goods by 13 percentage points less over the period. Incorporating these 27 indexes into the top-level XPI would increase the value of real exports of all merchandise goods by 2.6 percentage points at the end of 2017.
摘要美国进出口价格指数在40年前取代了单位价值指数,考虑到单位价值偏差造成的计量错误的质量问题。从那时起,作为单位价值基础的行政贸易数据有了很大改善。交易记录现在更加详细,可以通过电子方式获得,并且每月编制一次,几乎没有延误。学术研究人员使用这些数据来计算价格指标,其他国家统计局(NSOs)使用基于贸易数据的单位价值指数。美国劳工统计局(Bureau of Labor Statistics)目前正在评估,用从行政贸易数据计算的同质产品的单位价值指数取代价格指数,是否可以扩大公布的官方进出口价格指数的数量。该研究利用出口交易,从2012-2017年的2亿多份贸易记录中计算出123个出口产品类别的详细单位价值指数。结果表明,123个单位价值指数中有27个与公布的官方价格指数具有同质性和可比性。本文介绍了单位价值指标的计算和评价以及同质产品品类的选择所考虑的概念和方法。与官方价格指数相比,27个5位数的BEA(美国经济分析局)最终用途产品类别的出口单位价值指数在此期间将使这些商品的实际出口减少13个百分点。将这27个指数纳入最高水平的XPI,到2017年底,所有商品的实际出口价值将增加2.6个百分点。
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引用次数: 3
Econometric Issues in Hedonic Property Price Indices: Some Practical Help Hedonic房地产价格指数中的计量经济学问题:一些实际帮助
IF 1.1 4区 数学 Q3 Mathematics Pub Date : 2022-03-01 DOI: 10.2478/jos-2022-0008
M. Silver
Abstract Hedonic regressions are widely used and recommended for property price index (PPI) measurement. Hedonic PPIs control for changes in the quality-mix of properties transacted that can confound measures of change in average property prices. The widespread adoption of the hedonic approach is primarily due to the increasing availability, in this digital age, of electronic data on advertised and transaction prices of properties and their price-determining characteristics. Yet hedonic PPIs are only as good as the underlying estimated hedonic regressions. Regression-based measures are unusual in official economic statistics. There is little technical support in the international Handbooks and Guides for diagnostic measures and graphical plots for estimated regression equations as applied to PPIs. These diagnostics are essential to the transparency and credibility of hedonic PPI measurement. This article seeks to remedy this.
摘要Hedonic回归被广泛用于房地产价格指数(PPI)的测量,并被推荐使用。Hedonic PPI控制交易房地产质量组合的变化,这可能会混淆平均房地产价格变化的衡量标准。享乐方法的广泛采用主要是由于在这个数字时代,关于房地产广告和交易价格及其价格决定特征的电子数据的可用性越来越高。然而,享乐PPI只有与潜在的享乐回归估计一样好。基于回归的衡量标准在官方经济统计中并不常见。国际手册和指南中几乎没有技术支持用于PPI的估计回归方程的诊断测量和图形图。这些诊断对于特征PPI测量的透明度和可信度至关重要。本文试图对此进行补救。
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引用次数: 0
Sub-National Spatial Price Indexes for Housing: Methodological Issues and Computation for Italy 国家以下住房空间价格指数:意大利的方法论问题和计算
IF 1.1 4区 数学 Q3 Mathematics Pub Date : 2022-03-01 DOI: 10.2478/jos-2022-0004
Ilaria Benedetti, L. Biggeri, T. Laureti
Abstract It is essential to measure within-country differences in housing costs in order to evaluate costs of living, assessing and comparing poverty levels, quantifying salaries and disposable income of families and finally for designing housing policies at local level. To the authors knowledge, no studies have yet been carried out on the computation of Space Price Indexes for Housing Rents (SPIHRs). In this article we computed preliminary estimates of sub-national SPIHRs by using hedonic regression model, which is an extension of the Country Product Dummy method, for all the Italian regions. The hedonic regression is generally used to obtain multilateral spatial indexes, thus allowing us to obtain multilateral SPIHRs for the Italian regions. The estimates have been done using 2017 data from the Real Estate Market Observatory which is a part of the Italian Agency of Revenue and Tax. This data source is the most comprehensive source of information on Italian houses price rents with a wide geographical coverage, including data for each Italian municipality. The obtained results show significant differences across the Italian regions, thus highlighting the importance of calculating SPIHR in Italy on a regular basis and the need to continue researches in this field.
摘要必须衡量国内住房成本的差异,以评估生活成本,评估和比较贫困水平,量化家庭的工资和可支配收入,并最终制定地方一级的住房政策。据作者所知,目前还没有对住房租金空间价格指数(SPIHR)的计算进行研究。在本文中,我们使用特征回归模型计算了意大利所有地区的次国家SPIHR的初步估计值,该模型是国家产品虚拟方法的扩展。特征回归通常用于获得多边空间指数,从而使我们能够获得意大利地区的多边SPIHR。这些估计是使用意大利税务局下属的房地产市场观察站2017年的数据进行的。该数据源是意大利房价租金最全面的信息来源,地理覆盖范围广,包括意大利每个市政当局的数据。所获得的结果显示了意大利各地区的显著差异,从而突出了定期计算意大利SPIHR的重要性以及继续进行该领域研究的必要性。
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引用次数: 1
Creative and Exhaustive, but Less Practical – a Comment on the Article by Diewert and Fox 创意和详尽,但不太实用——对迪沃特和福克斯文章的评论
IF 1.1 4区 数学 Q3 Mathematics Pub Date : 2022-03-01 DOI: 10.2478/jos-2022-0014
B. Goldhammer
Abstract The article by Diewert and Fox provides a comprehensive overview of challenges that NSOs face in producing the CPI in pandemic times by touching on many different fields. A focus is on the treatment of missing prices, where they propose different methods depending on the resources available to the NSO. However, some of the procedures proposed can be seen as being less practical like the use of reservation prices (which is also debatable from a theoretical point of view) and of alternative data sources for weights whose implementation supposedly takes longer than the pandemic itself. Overall, the article provides an important contribution for making CPI production more robust for similar crises in the future.
摘要Diewert和Fox的文章通过涉及许多不同领域,全面概述了国家统计局在疫情期间编制CPI时面临的挑战。重点是处理遗漏价格,根据NSO可用的资源,他们提出了不同的方法。然而,一些拟议的程序可能被视为不太实用,比如使用预订价格(从理论角度来看,这也是有争议的)和替代数据源来计算权重,这些数据源的实施时间据说比疫情本身更长。总的来说,这篇文章为使CPI生产在未来类似危机中更加稳健做出了重要贡献。
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引用次数: 0
Rentals for Housing: A Property Fixed-Effects Estimator of Inflation from Administrative Data 住房租金:基于行政数据的通货膨胀的房地产固定效应估计
IF 1.1 4区 数学 Q3 Mathematics Pub Date : 2022-03-01 DOI: 10.2478/jos-2022-0009
A. Bentley
Abstract Official rentals for housing (rent) price inflation statistics are of considerable public interest. Matched-sample estimators, such as that used for nearly two-decades in New Zealand (2000–2019), require an unrealistic assumption of a static universe of rental properties. This article investigates (1) a property fixed-effects estimator that better reflects the dynamic universe of rental properties by implicitly imputing for price change associated with new and disappearing rental properties; (2) length-alignment simulations and property life-cycle metrics to inform the choice of data window length (eight years) and preferred splice methodology (mean-splice); and (3) stock-imputation to convert administrative data from a ‘flow’ (new tenancy price) to ‘stock’ (currently paid rent) concept. The derived window-length sensitivity findings have important implications for inflation measurement. It was found that the longer the data window used to fit the model, the greater the estimated rate of inflation. Using administrative data, a range of estimates from 55% (window length: three-quarters) to 127% (window of 90-quarters) were found for total inflation, over the 25-years to 2017 Q4.
官方住房租金(租金)价格通胀统计数据具有相当大的公共利益。匹配样本估计器,例如在新西兰(2000-2019)使用了近20年的匹配样本估计器,需要对租赁物业的静态世界进行不切实际的假设。本文研究了(1)一个财产固定效应估计量,该估计量通过隐式估算与新建和消失的租赁财产相关的价格变化,更好地反映了租赁财产的动态世界;(2)长度对齐模拟和属性生命周期指标,为选择数据窗口长度(8年)和首选拼接方法(均值拼接)提供信息;(3)存量估算,将管理数据从“流量”(新租赁价格)转换为“存量”(当前支付的租金)概念。推导出的窗长灵敏度结果对暴胀测量具有重要意义。研究发现,用于拟合模型的数据窗口越长,估计的通货膨胀率就越大。使用行政数据,在截至2017年第四季度的25年间,总通货膨胀率的估计范围从55%(窗口长度:四分之三)到127%(90个季度窗口)。
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引用次数: 0
Substitution Bias in the Measurement of Import and Export Price Indices: Causes and Correction 进出口价格指数计量中的替代偏差:原因及修正
IF 1.1 4区 数学 Q3 Mathematics Pub Date : 2022-03-01 DOI: 10.2478/jos-2022-0006
Ludwig von Auer, Alena Shumskikh
Abstract The import and export price indices of an economy are usually compiled by some Laspeyres type index. It is well known that such an index formula is prone to substitution bias. Therefore, also the terms of trade (ratio of export and import price index) are likely to be distorted. The underlying substitution bias accumulates over time. The present article introduces a simple and transparent retroactive correction approach that addresses the source of the substitution bias and produces meaningful long-run time series of import and export price levels and, therefore, of the terms of trade. Furthermore, an empirical case study is conducted that demonstrates the efficacy and versatility of the correction approach.
摘要一个经济体的进出口价格指数通常由一些拉氏指数编制。众所周知,这样的指数公式容易产生替代偏差。因此,贸易条件(进出口价格指数之比)也可能被扭曲。潜在的替代偏差会随着时间的推移而累积。本文介绍了一种简单透明的追溯修正方法,该方法解决了替代偏差的来源,并产生了进出口价格水平的有意义的长期时间序列,从而产生了贸易条件的长期时间系列。此外,还进行了一个实证案例研究,证明了矫正方法的有效性和多功能性。
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引用次数: 3
Response Burden and Data Quality in Business Surveys 商业调查中的回应负担和数据质量
IF 1.1 4区 数学 Q3 Mathematics Pub Date : 2021-12-01 DOI: 10.2478/jos-2021-0036
Marco Bottone, Lucia Modugno, A. Neri
Abstract Response burden has long been a concern for data producers. In this article, we investigate the relationship between some measures of actual and perceived burden and we provide empirical evidence of their association with data quality. We draw on two business surveys conducted by Banca d’Italia since 1970, which provide a very rich and unique source of information. We find evidence that the perceived burden is affected by actual burden but the latter is not the only driver. Our results also show a clear link between a respondent’s perceived effort and the probability of not answering some important questions (such as those relating to expectations of future investments and turnover) or of dropping out of the survey. On the contrary, we do not find significant effects on the quality of answers to quantitative questions such as business turnover and investments. Overall, these findings have implications for data producers that should target the perceived burden, besides the actual burden, to increase data quality.
摘要响应负担一直是数据生产者关注的问题。在这篇文章中,我们调查了一些实际负担和感知负担的衡量标准之间的关系,并提供了它们与数据质量相关的经验证据。我们借鉴了意大利银行自1970年以来进行的两次商业调查,这两次调查提供了非常丰富和独特的信息来源。我们发现有证据表明,感知负担受到实际负担的影响,但实际负担并不是唯一的驱动因素。我们的研究结果还表明,受访者的感知努力与不回答一些重要问题(如与未来投资和营业额预期有关的问题)或退出调查的可能性之间存在明显联系。相反,我们没有发现对业务营业额和投资等定量问题的答案质量有显著影响。总的来说,这些发现对数据生产者有启示,他们应该针对实际负担之外的感知负担,以提高数据质量。
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引用次数: 2
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Journal of Official Statistics
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