Arbeitspapier

Set identified linear models

We analyze the identification and estimation of parameters β satisfying the incomplete linear moment restrictions E(zT (xβ−y)) = E(zT u(z)) where z is a set of instruments and u(z) an unknown bounded scalar function. We first provide empirically relevant examples of such a set-up. Second, we show that these conditions set identify β where the identified set B is bounded and convex. We provide a sharp characterization of the identified set not only when the number of moment conditions is equal to the number of parameters of interest but also in the case in which the number of conditions is strictly larger than the number of parameters. We derive a necessary and sufficient condition of the validity of supernumerary restrictions which generalizes the familiar Sargan condition. Third, we provide new results on the asymptotics of analog estimates constructed from the identification results. When B is a strictly convex set, we also construct a test of the null hypothesis, β0 ε B, whose size is asymptotically correct and which relies on the minimization of the support function of the set B − {β0}. Results of some Monte Carlo experiments are presented.

Sprache
Englisch

Erschienen in
Series: cemmap working paper ; No. CWP13/11

Klassifikation
Wirtschaft

Ereignis
Geistige Schöpfung
(wer)
Bontemps, Christian
Magnac, Thierry
Maurin, Eric
Ereignis
Veröffentlichung
(wer)
Centre for Microdata Methods and Practice (cemmap)
(wo)
London
(wann)
2011

DOI
doi:10.1920/wp.cem.2011.1311
Handle
Letzte Aktualisierung
20.09.2024, 08:24 MESZ

Datenpartner

Dieses Objekt wird bereitgestellt von:
ZBW - Deutsche Zentralbibliothek für Wirtschaftswissenschaften - Leibniz-Informationszentrum Wirtschaft. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.

Objekttyp

  • Arbeitspapier

Beteiligte

  • Bontemps, Christian
  • Magnac, Thierry
  • Maurin, Eric
  • Centre for Microdata Methods and Practice (cemmap)

Entstanden

  • 2011

Ähnliche Objekte (12)