Cluster Analysis of Panel Choosing the Optimal Set of Instruments from Large Instrument Setsusing Non-Standard Optimisation of Information Criteria

George Kapetanios

No 534, Working Papers from Queen Mary University of London, School of Economics and Finance

Abstract: It is well known that instrumental variables (IV) estimation is sensitive to the choice of instruments both in small samples and asymptotically. Recently, Donald and Newey (2001) suggested a simple method for choosing the instrument set. The method involves minimising the approximate mean square error (MSE) of a given IV estimator where the MSE is obtained using refined asymptotic theory. An issue with the work of Donald and Newey (2001) is the fact that when considering large sets of valid instruments, it is not clear how to order the instruments in order to choose which ones ought to be included in the estimation. The present paper provides a possible solution to the problem using nonstandard optimisation algorithms. The properties of the algorithms are discussed. A Monte Carlo study illustrates the potential of the new method.

Keywords: Instrumental Variables; MSE; Simulated Annealing; Genetic Algorithms (search for similar items in EconPapers)
JEL-codes: C12 C15 C23 (search for similar items in EconPapers)
Date: 2005-05-01
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Persistent link: https://EconPapers.repec.org/RePEc:qmw:qmwecw:534

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