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ltm

swMATH ID:	7911
Software Authors:	Rizopoulos, D
Description:	ltm: an R package for latent variable modelling and item response theory analyses. The R package ltm has been developed for the analysis of multivariate dichotomous and polytomous data using latent variable models, under the Item Response Theory approach. For dichotomous data the Rasch, the Two-Parameter Logistic, and Birnbaum’s Three-Parameter models have been implemented, whereas for polytomous data Semejima’s Graded Response model is available. Parameter estimates are obtained under marginal maximum likelihood using the Gauss-Hermite quadrature rule. The capabilities and features of the package are illustrated using two real data examples.
Homepage:	http://www.jstatsoft.org/v17/i05/
Related Software:	R; eRm; mirt; BILOG; lme4; plink; Mplus; lordif; Mcmcpack; PARSCALE; MULTILOG; IRTPRO; psychomix; psychotools; sirt; poLCA; MICE; SAS; plRasch; TESTFACT
Cited in:	30 Publications

1 Publication describing the Software	Year

all top 5

3	Battauz, Michela
2	Bacci, Silvia
2	Bartolucci, Francesco
2	Gnaldi, Michela
2	Liu, Xiang
2	San Martín, Ernesto
1	Badih, Ghattas
1	Bernardo Sánchez, Antonio
1	Bertrand, Daisy
1	Bolt, Daniel M.
1	Brzezińska, Justyna
1	Butler, Emily L.
1	Castro, Luis Mauricio
1	Cepeda, Edilberto C.
1	Chae, Hui Soo
1	Chen, Shyh-Huei
1	Cheng, Ying
1	Davis, Sonia M.
1	De Cos Juez, Francisco Javier
1	de Raadt, Alexandra
1	El Ahmadi, Abdessadek
1	Eubank, Randy L.
1	Fariña, Paula
1	González, Jorge A.
1	Han, Zhuangzhuang
1	Hassan, Mahmood-Ul
1	Hernández-Orallo, Jose
1	Heuchenne, Christian
1	Hong, Maxwell R.
1	Ip, Edward Haksing
1	Joe, Harry
1	Johnson, Matthew Scott
1	Jones, Richard N.
1	Karl, Andrew T.
1	Kleinman, Marjorie
1	Kopf, Julia
1	Kosorok, Michael R.
1	Laber, Eric B.
1	Laurent, Boyer
1	Lee, Sora
1	Lee, Youngjo
1	Lin, Lizhen
1	Liu, Yang
1	Mair, Patrick
1	Martínez-Plumed, Fernando
1	Martínez-Usó, Adolfo
1	Miller, Frank
1	Milovanovic, Jelena
1	Montenegro Díaz, Álvaro Mauricio
1	Natriello, Gary
1	Nikoloulopoulos, Aristidis K.
1	Noh, Maengseok
1	Ordóñez Galán, Celestino
1	Oud, Johan H. L.
1	Pierre, Michel
1	Porcu, Mariano
1	Prudêncio, Ricardo B. C.
1	Quandt, Sara A.
1	Reiser, Mark
1	Rolin, Jean-Marie
1	Sánchez Lasheras, Fernando
1	Strobl, Carolin
1	Sulis, Isabella
1	Teresi, Jeanne A.
1	Toharudin, Toni
1	Tsompanaki, E.
1	Wang, Chun
1	Warrens, Matthijs J.
1	Weiss, David J.
1	Yang, Ji Seung
1	Zeileis, Achim

all top 5

13	Psychometrika
2	Computational Statistics
2	Communications in Statistics. Simulation and Computation
2	Journal of Statistical Computation and Simulation
1	Artificial Intelligence
1	Biometrics
1	Journal of Computational and Applied Mathematics
1	Revista Colombiana de Estadística
1	Journal of Classification
1	Computational Statistics and Data Analysis
1	Mathématiques et Sciences Humaines. Mathematics and Social Sciences
1	Statistical Methods and Applications
1	Journal of Mathematics
1	Use R!
1	Chapman & Hall/CRC Interdisciplinary Statistics Series

all top 5

30	Statistics (62-XX)
4	Computer science (68-XX)
2	Numerical analysis (65-XX)
2	Game theory, economics, finance, and other social and behavioral sciences (91-XX)
1	Linear and multilinear algebra; matrix theory (15-XX)
1	Biology and other natural sciences (92-XX)
1	Information and communication theory, circuits (94-XX)