The SMART system is used for the analysis, search and retrieval of news stories appearing in Time'' magazine. A comparison is made between the automatic text processing methods incorporated into the SMART system and a manual search using the classified index to Time.'' (14 references) (Author)

Three experiments were made by a flexible machine search system to test the retrieval efficiency of searching free text and keywords. Results based upon relevance judgements of users indicate that titles and abstracts are good index material which can be used for machine searching without human indexing. (Author/SJ)

Reports the results of experiments in document clustering using three well-known test collections. (Author)

A retrospective test search on one year of CA Condensates was carried out in order to calculate the costs per profile and to get an impression of how CA Condensates would suffice as a database for retrospective use. (11 references) (Author)

Use of syntactic trace as an access strategy for large files containing arbitrary languages for which thesaurus-based and multiple attribute search techniques are unsuitable. (LS)

The binary search scheme is a method of finding a particular file from a set of ordered files stored in a computer. In this article an exact expression for the expected number of passes required to find a file is derived. (Author)

This paper compares two types of cycling strategies possible in citation index searching. This is done using a class of pseudo-randomly generated citation digraphs whose elements have bounded bibliography size. An attempt is made to explain the results obtained using a combinatorial formula of general application to digraphs. (10 references)…

The binary search scheme is discussed with reference to the number of passes required to locate a record and the distribution of the number of passes. (Author/PF)

The Retrieval of information by means of freely-chosen descriptors may be handled efficiently by creating an inverted file organization in an adaptive manner, entries in this file being generated by sequential searching of the master file, when required. (Author)

The logic of different types of weighting are discussed, and experiments testing weighting schemes of these types are described. The results show that one type of weighting leads to material performance improvements in quite different collection environments. (22 references) (Author)

The simulation model described is used as a tool for designing and evaluating literature search systems. The simulation program creates a well specified collection of documents and analyzes the effect of charges in query file characteristics on system output performance. (14 references) (Author/KE)

On-line reference retrieval is seen as replacing tape driven systems within a few years. Design criteria are discussed including minimizing the number of disc accesses, use of hash coding for searching a thesaurus and searching with precise terms first and common terms last. (6 references) (Author/SJ)

The paper describes TSAR, a current awareness or SDI system which has been developed for processing MARC records in general, but is particularly concerned with the INSPEC service. Some statistics on the frequency of occurrence of words and comments on data compression conclude the paper. (7 references) (Author/SJ)

Retrospective search of large data bases requires development of special techniques for automatic compression of data and minimization of the number of input-output operations to the computer files. The computer program should require a relatively small amount of internal memory. This paper describes the structure of such a program. (9 references)…