Results of data analysis on 470 journal titles illustrate complexity of the fuzzy set theory modeling process, which consists of three factors--number of missing issues, citations, circulations--and its limitations in making journal binding decisions. Procedures of research, data collection, and data analysis are discussed. Matrices are included.…

A model which relates the access control and indexing functions. The model is based on concept protection which allows a practically unbounded number of levels (subsets) of protection without requiring a fixed hierarchy among the levels. This protection is offered independently for each of the user operations allowed. (Author)

An analysis to ascertain which electronic data processing (EDP) systems are most flexible in processing wide ranges of volumes efficiently. A simulation model of the job environment of three common EDP systems provides information on the shape of their cost functions in the neighborhood of optimality. (Author/LS)

Establishes a type-token identity relating type-token ratio and bilogarithmic type-token ratio; uses the Simon-Yule model of Zipf's law to drive the type-token ratio and provide a statistical model of text generation; and refines the model to allow for decreasing entry rates of new words. (26 references) (Author/CLB)

Discussion of changes in organizational environments focuses on nonbureaucratic, or nontraditional, organizations, and the role of information technology. A model of a nontraditional organizational design is described and results of a pilot study of the role of information technology in nontraditional organizations are presented. Contains 114…

A study comparing citations received by patents in given year to number received in subsequent years found that, even though influential patents remain influential, both highly and infrequently cited patents age at same rate. Distribution of patents by number of citations received is stable over time. (17 references) (EJS)

A statistical model for characterizing the growth patterns of data base utilization and for estimating future utilization levels of demand has been developed for information retrieval organizations. Illustrations of the model applied to a typical information retrieval organization are given and discussed. (5 references) (Author)

Discusses models for the distribution of words in text and proposes a new model based on clustering that can be used to estimate the probability that a document contains a particular word as well as the number of distinct words in a document. Zipf's law and the Poisson approximation are also discussed. (18 references) (LRW)

Activities within a library are combined with the library's floor plan to develop a model of the library as a network of queues. This model can be used to predict average patron processing times and costs as they are affected by demand characteristics and floor plan variations. (Author/FM)

Two methods are presented by which the librarian can forecast book circulation by subject. The shelflist model treats the number of library books as a control variable, while the other defines the dependent variable as the proportion of the shelflist circulated. (FM)

Discusses the Standard Generalized Markup Language (SGML), which was adopted as an international standard for data description, data modeling, and interchange in October 1986, and explores its evolution from its technical completion to its adoption by the international market. (four references) (LAE)

Proposes split model for index term distribution in document set that uses rank function for high frequency terms and size function for low frequency terms; the point of transition is determined either empirically or by rule. Distributions to describe index term exhaustivity and term co-occurrence are considered briefly. (36 references) (EJS)

Proposes and explains a modification of the mixed Poisson model for library circulations which takes into account the periods when a book is out on loan and therefore unavailable for borrowing. Highlights include frequency of circulation distributions; negative binomial distribution; and examples of the model at two universities. (Contains 34…

Describes a study that empirically tested the citation behavior model of Moravcsik and Murugesan and examined the hypothesized relationships between three variables: reported citation type, reported utility level, and citation location. It is concluded that studies focusing on elements of information cited are needed to develop models reflecting…

Integrates structured data and text using the unchanged, standard relational model. The performance of a parallel relational database system and the effect of query reduction on accuracy were tested, and it was found that queries can be reduced prior to their implementation without incurring significant loss in precision/recall. (AEF)