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Book
An Algorithmic Crystal Ball: Forecasts-based on Machine Learning
Authors: --- ---
ISBN: 148438251X 1484382498 Year: 2018 Publisher: Washington, D.C. : International Monetary Fund,

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Abstract

Forecasting macroeconomic variables is key to developing a view on a country's economic outlook. Most traditional forecasting models rely on fitting data to a pre-specified relationship between input and output variables, thereby assuming a specific functional and stochastic process underlying that process. We pursue a new approach to forecasting by employing a number of machine learning algorithms, a method that is data driven, and imposing limited restrictions on the nature of the true relationship between input and output variables. We apply the Elastic Net, SuperLearner, and Recurring Neural Network algorithms on macro data of seven, broadly representative, advanced and emerging economies and find that these algorithms can outperform traditional statistical models, thereby offering a relevant addition to the field of economic forecasting.


Book
Terms-of-Trade Cycles and External Adjustment
Authors: --- ---
ISBN: 1475584083 9781475584080 1475584067 Year: 2017 Publisher: Washington, D.C. : International Monetary Fund,

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We study the process of external adjustment to large terms-of-trade level shifts—identified with a Markov-switching approach—for a large set of countries during the period 1960–2015. We find that adjustment to these shocks is relatively fast. Current accounts experience, on average, a contemporaneous variation of only about ½ of the magnitude of the price shock—indicating a significant volume offset—and a full adjustment within 3–4 years. Dynamics are largely symmetric for terms-of-trade booms and busts, as well as for advanced and emerging market economies. External adjustment is driven primarily by offsetting shifts in domestic demand, as opposed to variations in output (also reflected in the response of import rather than export volumes), indicating a strong income channel at play. Exchange rate flexibility appears to have played an important buffering role during booms, but less so during busts; while international reserve holdings have been a key tool for smoothing the adjustment process.


Book
In Search of Equilibrium : Estimating Equilibrium Real Exchange Rates in Sub-Saharan African Countries
Authors: ---
ISBN: 1462389139 1452781400 1282584197 9786613822529 1451911076 Year: 2007 Publisher: Washington, D.C. : International Monetary Fund,

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This paper presents a methodology to estimate equilibrium real exchange rates (ERER) for Sub-Saharan African (SSA) countries using both single-country and panel estimation techniques. The limited data set hinders single-country estimation for most countries in the sample, but panel estimates are statistically and economically significant, and generally robust to different estimation techniques. The results replicate well the historical experience for a number of countries in the sample. Panel techniques can also be used to derive out of sample estimates for countries with a more limited data set.


Book
The Role of Inter- and Intraindustry Trade in Technology Diffusion
Authors: ---
ISBN: 1462315712 1452735131 1281387320 1451894686 9786613779960 Year: 1999 Publisher: Washington, D.C. : International Monetary Fund,

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Research shows that international trade is an important channel for the transfer of technology. Building on this evidence, this paper examines the effects of inter- and intraindustry trade on technology transfer. The paper develops and tests the hypothesis that intraindustry trade stimulates more technology transfer than interindustry trade because countries are likely to absorb foreign technologies more easily when their imports are from the same sectors as their production and export sectors. The results of empirical tests for 87 countries during 1970–93 support this hypothesis.


Book
A Newton's Method for Benchmarking Time Series According to a Growth Rates Preservation Principle
Authors: --- ---
ISBN: 1463901909 1463900333 1283566672 9786613879127 1463900384 Year: 2011 Publisher: Washington, D.C. : International Monetary Fund,

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This work presents a new technique for temporally benchmarking a time series according to the growth rates preservation principle (GRP) by Causey and Trager (1981). A procedure is developed which (i) transforms the original constrained problem into an unconstrained one, and (ii) applies a Newton's method exploiting the analytic Hessian of the GRP objective function. We show that the proposed technique is easy to implement, computationally robust and efficient, all features which make it a plausible competitor of other benchmarking procedures (Denton, 1971; Dagum and Cholette, 2006) also in a data-production process involving a considerable amount of series.


Book
Seeing in the Dark : A Machine-Learning Approach to Nowcasting in Lebanon
Author:
ISBN: 1513569643 1475540973 1513568264 Year: 2016 Publisher: Washington, D.C. : International Monetary Fund,

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Macroeconomic analysis in Lebanon presents a distinct challenge. For example, long delays in the publication of GDP data mean that our analysis often relies on proxy variables, and resembles an extended version of the “nowcasting” challenge familiar to many central banks. Addressing this problem—and mindful of the pitfalls of extracting information from a large number of correlated proxies—we explore some recent techniques from the machine learning literature. We focus on two popular techniques (Elastic Net regression and Random Forests) and provide an estimation procedure that is intuitively familiar and well suited to the challenging features of Lebanon’s data.


Book
Impact Estimation of Disasters : A Global Aggregate for 1960 To 2007
Authors: ---
Year: 2009 Publisher: Washington, D.C., The World Bank,

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This paper aims to estimate the global aggregate of disaster impacts during 1960 to 2007 using Social Accounting Matrix (SAM) methodology. The authors selected 184 major disasters in terms of the size of economic damages, based on the data available from the International Emergency Disasters and MunichRe (NatCat) databases for natural catastrophes. They estimate the losses and total impacts including the higher-order effects of these disasters using social accounting matrices constructed for this study. Although the aggregate damages based on the data amount to USD 742 billion, the aggregate losses and total impacts are estimated at USD 360 billion and USD 678 billion, respectively. The results show a growing trend of economic impacts over time in absolute value. However, once the data and estimates are normalized using global gross domestic product, the historical trend of total impacts becomes statistically insignificant. The visual observation confirms the inverted 'U' curve distribution between total impact and income level, while statistical analyses indicate negative linear relationships between them for climatological, geophysical, and especially hydrological events.


Book
Remittances and the Brain Drain Revisited : the Microdata Show That More Educated Migrants Remit More
Authors: --- --- ---
Year: 2009 Publisher: Washington, D.C., The World Bank,

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Two of the most salient trends surrounding the issue of migration and development over the past two decades are the large rise in remittances, and an increased flow of skilled migration. However, recent literature based on cross-country regressions has claimed that more educated migrants remit less, leading to concerns that further increases in skilled migration will hamper remittance growth. This paper revisits the relationship between education and remitting behavior using microdata from surveys of immigrants in 11 major destination countries. The data show a mixed pattern between education and the likelihood of remitting, and a strong positive relationship between education and the amount remitted conditional on remitting. Combining these intensive and extensive margins gives an overall positive effect of education on the amount remitted. The microdata then allow investigation as to why the more educated remit more. The analysis finds that the higher income earned by migrants, rather than characteristics of their family situations, explains much of the higher remittances.


Book
The great crisis and fiscal institutions in eastern and central Europe and central Asia
Authors: --- ---
Year: 2010 Publisher: Washington, D.C., The World Bank,

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This paper examines fiscal outcomes in Eastern and Central European countries before and during the global crisis of 2008-2010. These outcomes are evaluated in the context of overall changes in fiscal institutions and global market conditions. Eastern and Central European countries' situations improved dramatically in the pre-crisis period as tax revenues boomed, and fiscal institutions were reformed. Expenditures increased quite significantly in real terms for some of the countries in the pre-crisis era so that when tax revenues collapsed in the wake of the crisis, the countries were left with large deficits. Institutional reform helped countries manage their fiscal situations better, but the crisis also exposed shortcomings of the status quo. In the post-crisis period, fiscal institutions aimed at promoting fiscal discipline are being strengthened. Governments will also need to take a closer look at the sustainability of current expenditure patterns, particularly the strong emphasis on social expenditures.


Book
Experimental Approaches in Migration Studies
Authors: ---
Year: 2010 Publisher: Washington, D.C., The World Bank,

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The decision of whether or not to migrate has far-reaching consequences for the lives of individuals and their families. But the very nature of this choice makes identifying the impacts of migration difficult, since it is hard to measure a credible counterfactual of what the person and their household would have been doing had migration not occurred. Migration experiments provide a clear and credible way for identifying this counterfactual, and thereby allowing causal estimation of the impacts of migration. The authors provide an overview and critical review of the three strands of this approach: policy experiments, natural experiments, and researcher-led field experiments. The purpose is to introduce readers to the need for this approach, give examples of where it has been applied in practice, and draw out lessons for future work in this area.

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