A Note on the Computation of the Second-Order Derivatives of the Elementary Symmetric Functions in the Rasch Model.

Formann, Anton K.

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Peer reviewed

ERIC Number: EJ339566

Record Type: CIJE

Publication Date: 1986

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A Note on the Computation of the Second-Order Derivatives of the Elementary Symmetric Functions in the Rasch Model.

Formann, Anton K.

Psychometrika, v51 n2 p335-39 Jun 1986

It is shown that for equal parameters explicit formulas exist, facilitating the application of the Newton-Raphson procedure to estimate the parameters in the Rasch model and related models according to the conditional maximum likelihood principle. (Author/LMO)

Descriptors: Latent Trait Theory, Mathematical Models, Matrices, Maximum Likelihood Statistics, Psychometrics, Statistical Studies

Publication Type: Journal Articles; Reports - Research

Education Level: N/A

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Language: English

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