Is more data better?

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Is more data better?

Author Info

Kaushik Mitra () (Department of Economics, Royal Holloway, University of London)

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Kaushik Mitra

Abstract

Conventional wisdom usually suggests that agents should use all the data they have to make the best possible prediction. In this paper, it is shown that agents may make better predictions by discarding old data if their model is mis-specified. The applicability of the results to some economic models is also demonstrated.

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Publisher Info
Paper provided by Department of Economics, Royal Holloway University of London in its series Royal Holloway, University of London: Discussion Papers in Economics with number 04/19.

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Length: 14 pages
Date of creation: Jul 2004
Date of revision: Jul 2004
Handle: RePEc:hol:holodi:0419

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Other versions of this item:

Article
- Mitra, Kaushik, 2005. "Is more data better?," Journal of Economic Behavior & Organization, Elsevier, vol. 56(2), pages 263-272, February. [Downloadable!] (restricted)
Paper
- Kaushik Mitra, . "Is more data better?," Discussion Papers 00/44, Department of Economics, University of York. [Downloadable!]
- Mitra, K., 1999. "Is More Data Better?," University of Helsinki, Department of Economics 452, Department of Economics.

Find related papers by JEL classification:
C13 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: General - - - Estimation
C22 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Time-Series Models; Dynamic Quantile Regressions
C53 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Forecasting and Other Model Applications
D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search, Learning, and Information
E32 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Business Fluctuations; Cycles
E37 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Forecasting and Simulation

This paper has been announced in the following NEP Reports:

NEP-ALL-2004-08-09 (All new papers)
NEP-ETS-2004-08-09 (Econometric Time Series)
NEP-MAC-2004-08-09 (Macroeconomics)
NEP-MIC-2004-08-09 (Microeconomics)

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:

Honkapohja, S. & Mitra, K., 1999. "Learning with Bounded Memory in Stochastic Models," University of Helsinki, Department of Economics 456, Department of Economics.
Other versions:
- Seppo Honkapohja & Kaushik Mitra, . "Learning with Bounded Memory in Stochastic Models," Discussion Papers 00/42, Department of Economics, University of York. [Downloadable!]
- Kaushik Mitra & Seppo Honkapohja, 1999. "Learning with Bounded Memory in Stochastic Models," Computing in Economics and Finance 1999 221, Society for Computational Economics. [Downloadable!]
- Honkapohja, Seppo & Mitra, Kaushik, 2003. "Learning with bounded memory in stochastic models," Journal of Economic Dynamics and Control, Elsevier, vol. 27(8), pages 1437-1457, June. [Downloadable!] (restricted)
Cars Hommes & Gerhard Sorger, 1997. "Consistent Expectations Equilibria," Tinbergen Institute Discussion Papers 97-051/1, Tinbergen Institute.
Other versions:
- Hommes, Cars & Sorger, Gerhard, 1998. "Consistent Expectations Equilibria," Macroeconomic Dynamics, Cambridge University Press, vol. 2(03), pages 287-321, September. [Downloadable!]
Lucas, Robert E, Jr, 1973. "Some International Evidence on Output-Inflation Tradeoffs," American Economic Review, American Economic Association, vol. 63(3), pages 326-34, June.
Lucas, Robert Jr, 1976. "Econometric policy evaluation: A critique," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 1(1), pages 19-46, January. [Downloadable!] (restricted)
Hommes, Cars H., 1998. "On the consistency of backward-looking expectations: The case of the cobweb," Journal of Economic Behavior & Organization, Elsevier, vol. 33(3-4), pages 333-362, January. [Downloadable!] (restricted)
Evans, G B A & Savin, N E, 1981. "Testing for Unit Roots: 1," Econometrica, Econometric Society, vol. 49(3), pages 753-79, May. [Downloadable!] (restricted)
Dickey, David A & Fuller, Wayne A, 1981. "Likelihood Ratio Statistics for Autoregressive Time Series with a Unit Root," Econometrica, Econometric Society, vol. 49(4), pages 1057-72, June. [Downloadable!] (restricted)
repec:cup:macdyn:v:2:y:1998:i:3:p:287-321 is not listed on IDEAS
Evans, G B A & Savin, N E, 1984. "Testing for Unit Roots: 2," Econometrica, Econometric Society, vol. 52(5), pages 1241-69, September. [Downloadable!] (restricted)
Bray, Margaret, 1982. "Learning, estimation, and the stability of rational expectations," Journal of Economic Theory, Elsevier, vol. 26(2), pages 318-339, April. [Downloadable!] (restricted)
Evans, George W. & Honkapohja, Seppo, 1999. "Learning dynamics," Handbook of Macroeconomics, in: J. B. Taylor & M. Woodford (ed.), Handbook of Macroeconomics, edition 1, volume 1, chapter 7, pages 449-542 Elsevier. [Downloadable!] (restricted)
George W. Evans & Garey Ramey, 2001. ""Adaptive Expectations, Underparameterization and the Lucas Critique," University of Oregon Economics Department Working Papers 2001-8, University of Oregon Economics Department, revised 01 Dec 2004. [Downloadable!]
Other versions:
- George Evans & Garey Ramey, 2001. "Adaptive Expectations, Underparameterization and the Lucas Critique," University of California at San Diego, Economics Working Paper Series 2001-11, Department of Economics, UC San Diego. [Downloadable!]
- Evans, George W. & Ramey, Garey, 2006. "Adaptive expectations, underparameterization and the Lucas critique," Journal of Monetary Economics, Elsevier, vol. 53(2), pages 249-264, March. [Downloadable!] (restricted)

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