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Weak identification of long memory with implications for inference

Li, Jia; Phillips, Peter C. B.; Shi, Shuping; Yu, Jun - 2022

Persistent link: https://www.econbiz.de/10013542193

On the economic determinants of oil production : theoretical analysis and empirical evidence for small exporting countries

Cologni, Alessandro; Manera, Matteo - 2011

In this paper, decisions regarding production in oil exporting countries are studied by means of theoretical analysis and empirical investigation. Under the assumptions of exogenous oil prices and world oil demand, we are able to describe the relationship between oil production levels and...

Persistent link: https://www.econbiz.de/10009231652

Testing mean stability of heteroskedastic time series

Dalla, Violetta; Giraitis, Liudas; Phillips, Peter C. B. - 2015

series. Application of the new methods to analyze the volatility properties of stock market returns leads to some unexpected …

Persistent link: https://www.econbiz.de/10011405222

Statistical and economic evaluation of time series models for forecasting arrivals at call centers

Bastianin, Andrea; Galeotti, Marzio; Manera, Matteo - 2017

Call centers' managers are interested in obtaining accurate forecasts of call arrivals because these are a key input in staffing and scheduling decisions. Therefore their ability to achieve an optimal balance between service quality and operating costs ultimately hinges on forecast accuracy. We...

Persistent link: https://www.econbiz.de/10011599302

Futures price volatility in commodities markets : the role of short term vs long term speculation

Manera, Matteo; Nicolini, Marcella; Vignati, Ilaria - 2013

This paper evaluates how different types of speculation affect the volatility of commodities' futures prices. We adopt …-2010 analyzed at weekly frequency. Using GARCH models we find that speculation significantly affects volatility of returns: short … term speculation has a positive and significant impact on volatility, while long term speculation generally has a negative …

Persistent link: https://www.econbiz.de/10009756298

Robust testing for explosive behavior with strongly dependent errors

Lui, Yiu Lim; Phillips, Peter C. B.; Yu, Jun - 2022

Persistent link: https://www.econbiz.de/10013542210

Robust tests for white noise and cross-correlation

Dalla, Violetta; Giraitis, Liudas; Phillips, Peter C. B. - 2020

Commonly used tests to assess evidence for the absence of autocorrelation in a univariate time series or serial cross-correlation between time series rely on procedures whose validity holds for i.i.d. data. When the series are not i.i.d., the size of correlogram and cumulative Ljung-Box tests...

Persistent link: https://www.econbiz.de/10012243279