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Statistics in Information Retrieval Experiments.
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Weissmann, V. E. – Information Processing and Management, 1986
The approach of J. D. Sneed is used to argue for a distinction between theoretical and nontheoretical (or empirical) entities. Attention is directed toward this approach as an important facility for looking at statistics and for constructing a framework for the correct use of statistical theory in information retrieval experiments. (MBR)
Descriptors: Experiments, Information Retrieval, Information Science, Mathematical Models
Effect of Noise in the Three-Parameter Logistic Model.
Samejima, Fumiko – 1982
In a preceding research report, ONR/RR-82-1 (Information Loss Caused by Noise in Models for Dichotomous Items), observations were made on the effect of noise accommodated in different types of models on the dichotomous response level. In the present paper, focus is put upon the three-parameter logistic model, which is widely used among…
Descriptors: Estimation (Mathematics), Goodness of Fit, Guessing (Tests), Mathematical Models
An Application of the Cobb-Douglas Model to the Association of Research Libraries.
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Hayes, Robert M; And Others – Library and Information Science Research, An International Journal, 1983
Explores alternative measures--Ph.D.s produced by the institution, number of faculty, number of interlibrary loans, number of publications attributable to the institution--to be used to test applicability to research libraries of the Cobb-Douglas production function, which relates three variables--production, labor, and capital investment.…
Descriptors: Academic Libraries, Higher Education, Library Associations, Mathematical Models
Information Loss Caused by Noise in Models for Dichotomous Items.
Samejima, Fumiko – 1982
Because of the recent popularity of the three-parameter logistic model among the researchers who apply latent trait theory, it will be worthwhile to investigate the effect of noise accommodated in different models. In the present paper, four types of models on the dichotomous response level, Types A, B, C and D, are considered. Type A does not…
Descriptors: Adaptive Testing, Goodness of Fit, Latent Trait Theory, Mathematical Models
The Discriminating Power of Items that Measure More than One Dimension.
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Reckase, Mark D. – 1986
The work presented in this paper defined conceptually the concepts of multidimensional discrimination and information, derived mathematical expressions for the concepts for a particular multidimensional item response theory (IRT) model, and applied the concepts to actual test data. Multidimensional discrimination was defined as a function of the…
Descriptors: College Entrance Examinations, Difficulty Level, Discriminant Analysis, Item Analysis
Using National Survey of Postsecondary Faculty Data To Form Disciplinary Specific Comparative Productivity Figures for Public Institutions with Significant Graduate and Research Programs. AIR 2000 Annual Forum Paper.
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Chatman, Steve – 2000
This study used the restricted access database of the 1993 National Study of Postsecondary Faculty to examine faculty workload by academic discipline for full-time regularly appointed teaching and research faculty in public Carnegie research I and II and Doctoral I and II institutions (n=2,056). Data are reported for 14 disciplinary areas…
Descriptors: Academic Rank (Professional), Chi Square, College Faculty, Correlation