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Working Paper
Evaluating the forecasting performance of commodity futures prices
Commodity futures prices are frequently criticized as being uninformative for forecasting purposes because (1) they seem to do no better than a random walk or an extrapolation of recent trends and (2) futures prices for commodities often trace out a relatively flat trajectory even though global demand is steadily increasing. In this paper, we attempt to shed light on these concerns by discussing the theoretical relationship between spot and futures prices for commodities and by evaluating the empirical forecasting performance of futures prices relative to some alternative benchmarks. The key ...
Working Paper
Maximum likelihood in the frequency domain: a time to build example
A well known result is that the Gaussian log-likelihood can be expressed as the sum over different frequency components. This implies that the likelihood ratio statistic has a similar linear decomposition. We exploit these observations to devise diagnostic methods that are useful for interpreting maximum likelihood ratio tests. We apply the methods to the estimation and testing of two real business cycle models. The standard real business cycle model is rejected in favor of an alternative in which capital investment requires a planning period.
Working Paper
Nonlinearities in the oil price-output relationship
It is customary to suggest that the asymmetry in the transmission of oil price shocks to real output is well established. Much of the empirical work cited as being in support of asymmetries, however, has not directly tested the hypothesis of an asymmetric transmission of oil price innovations. Moreover, many of the papers quantifying these asymmetric responses are based on censored oil price VAR models which recently have been shown to be invalid. Other studies are based on dynamic correlations in the data that do not shed light on the central question of whether the structural responses of ...
Journal Article
Forecasting China's Role in World Oil Demand
Although China?s growth has slowed recently, the country?s demand for oil could be entering a period of faster growth that could result in substantially higher oil prices. Because Americans buy and sell oil and petroleum products in the global market, global demand prospects influence the profitability of U.S. oil producers and the costs paid by U.S. consumers. Analysis based on the global relationship between economic development and oil demand illustrates the prospects for Chinese oil demand growth and the resulting opportunities and challenges for U.S. producers and consumers.
Working Paper
Trade integration, competition, and the decline in exchange-rate pass-through
Over the past twenty years, U.S. import prices have become less responsive to the exchange rate. We propose that a significant portion of this decline is a result of increased trade integration. To illustrate this effect, we develop an open economy DGE model in which trade occurs along both the intensive and extensive margins. The key element we introduce into this environment is strategic complementarity in price setting. As a result, a firm's pricing decision depends on the prices set by its competitors. This feature implies that a foreign exporter finds it optimal to vary its markup in ...
Working Paper
Maximum likelihood in the frequency domain: a time to build example
The Gaussian log-likelihood can be expressed as the sum over different frequency components. This implies that the likelihood ratio statistic has a similar linear decomposition. Exploiting these observations, the authors devise diagnostic methods that are useful for interpreting maximum-likelihood parameter estimates and likelihood ratio tests. They apply the methods to estimating and testing two real business-cycle models and reject the standard model in favor of an alternative in which capital investment requires a planning period.
Working Paper
Exchange rate pass-through to U.S. import prices: some new evidence
This paper documents a sustained decline in exchange rate pass-through to U.S. import prices, from above 0.5 during the 1980s to somewhere in the neighborhood of 0.2 during the last decade. This decline in the pass-through coefficient is robust to the measure of foreign prices that is included in the regression (i.e., CPI versus PPI), whether the estimation is done in levels or differences, and whether U.S. prices are included as an explanatory variable. Notably, the largest estimates of pass-through are obtained when commodity prices are excluded from the regression. In this case, the ...