A previously developed method of automatically selecting items for inclusion in a test subject to constraints on item content and statistical properties is applied to real data. Two tests are first assembled by experts in test construction who normally assemble such tests on a routine basis. Using the same pool of items and constraints articulated…

In the process of item calibration for a computerized adaptive test (CAT), many well-established calibrating packages show weakness in the estimation of item parameters. This paper introduces an on-line calibration algorithm based on the convexity of likelihood functions. This package consists of: (1) an algorithm that estimates examinee ability…

Implicit figuration and subjective interpretation make up the conventional basis of the classical discussion of the comprehensiveness and aesthetic quality of the metaphor. Its function and use in social science research is illustrated as a background to a radically different methodological approach. By means of a Perspective Text Analysis, it is…

After a brief discussion of Pascal's triangle and description of four methods of hand construction, the author provides FORTRAN and BASIC programs for computer construction based on recursive definition. (SD)

Two rule-based mathematics curricula were compared experimentally. The discrete rules curriculum was cut from 303 lower order rules to 169 rules plus 5 higher order rules by a higher order curriculum. Higher order curriculum subjects were taught less, but learned more. (Author/SE)

The notion of buggy procedures has played an important role in recent cognitive models of mathematical skills. Some earlier work on student modeling used artificial intelligence methods to automatically construct buggy models of student behavior. An alternate approach, proposed here, draws on insights from the rapidly developing field of machine…

A method for generating Pythagorean triples is presented and demonstrated with several examples. Its relationship to another method is shown and several interesting related facts are proven. (LS)

This is the teacher's guide and commentary for the SMSG textbook Algorithms, Computation and Mathematics (Algol Supplement). This teacher's commentary provides background information for the teacher, suggestions for activities found in the student's Algol Supplement, and answers to exercises and activities. The course is designed for high school…

This is the teacher's guide and commentary for the SMSG textbook Algorithms, Computation, and Mathematics (Fortran Supplement). The teacher's commentary provides background information for the teacher, suggestions for activities found in the Fortran Supplement, and answers for exercises and activities. The course is designed for high school…

Information science has in recent years developed an algorithmic procedure for content analysis of abstracts which includes setting up a metalanguage for a particular field of knowledge. Such a procedure may aid in solving problems of automatic text analysis in machine translation. (TL)

THE OBJECTIVE OF THIS PROJECT WAS TO DEVISE AN ALGORITHM FOR A STEM RECOGNITION PROGRAM DESIGNED TO SEARCH FOR THE ROOT OF ANY HEBREW WORD AS WELL AS TO DETECT INNER CHANGES ON THE GIVEN ROOT. SUCH AN ALGORITHM COULD BE USED IN LIBRARY CATALOGING AND IN CREATING INDEXES AND CONCORDANCES OF TEXTS IN THE HEBREW LANGUAGE. IN THIS STUDY THE HEBREW…

Network Analysis is an observational system focusing on the relationships of individuals within a system--their subgroups, their leaders, and the frequency of their communications. The strength of relationships can be measured by examining the incidence and duration of intercommunications. Using data accumulated by questioning each member of the…