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Journal of the Association for Information Science

IN THIS ISSUE

 

Bert R. Boyce

381

RESEARCH

 

Study of Interactive Feedback during Mediated Information Retrieval
Amanda Spink

Feedback is a fundamental concept within the physical and the social sciences with its modern origins drawn from cybernetics. Information science is exploring feedback as a key component in the interactive model of information retrieval (IR). This article reports results from a study exploring the information retrieval and types of interactive feedback during mediated IR. Five different types of interactive feedback were identified, extending the interactive IR model to include relevance , magnitude, and strategy interactive feedback. Implications for further research investigating the nature and models of interactive feedback in information retrieval are discussed.

 

382

 

Semantic Vector Space Model: Implementation and Evaluation
Geoffrey Z. Liu 

This article presents the Semantic Vector Space Model (SVSM), a text representation and searching technique based on the combination of Vector Space Model (VSM) with heuristic syntax parsing and distributed representation of semantic case structures. In this model, both documents and queries are represented as semantic matrices. A search mechanism is designed to compute the similarity between two semantic matrices to predict relevancy. A prototype system was built to implement this model by modifying the SMART system and using the Xerox Part-of Speech (P-O-S-) tagger as the pre-processor of the indexing process. The prototype system was used in an experimental study to evaluate this technique in terms of precision, recall, and effectiveness of relevance ranking. The results of the study showed that if documents and queries were too short (typically less than two lines in length), the technique was less effective than VSM. But with longer documents and queries, especially when original documents were used as queries, we found that the system based on our technique had significantly better performances than SMART.

 

395

 

Why Words and Co-Words Cannot Map the Development of the Sciences
Loet Leydesdorff 

A restricted set of full-text articles from a sub-speciality of biochemistry was analyzed and compared in terms of co-occurences and co-absences of words. By using the distribution of words over the sections, a clear distinction among "theoretical" "observational" and "methodological" terminology can be made in individual articles. However, at the levels of the set this structure is no longer retrievable: Words change both in terms of frequencies of relations with other words, and in terms of positional meaning from one text to another. These results accord with Hess's (1980) thesis about the science as fluid networks. The fluidity of networks in which nodes and links may change positions is expected to destabilise representations of developments on the basis of co-occurences and co-absences of words. The consequences for the lexicographical approach to generating artificial intelligence from scientific texts are discussed.

418

PERSPECTIVES ON ... IMPLEMENTATION AND EVALUATION OF AN INTEGRATED INFORMATION CENTER IN AN ACADEMIC ENVIRONMENT

 

Introduction And Overview
George D'Elia

 

430

 

The Design of the Integrated Information Center Project
Thomas Shaughnessy, Carl Adams 

This article describes the information environment at the University of Minnesota at the beginning of the Integrated Information Center (IIC) project, the proposed design of the IIC, and the proposed organaization structure of the IIC.

 

434

 

Challenges Encountered during the Implementation of the Integrated Information Center at the University of Minnesota
Cynthia Beath, George D'Elia, Joseph Branin, Nancy Rhode 

This article describes the significant challenges that were encountered during the implementation of the Integrated Information Center (IIC). These challenges were of three kinds: Those in the environment and beyond the control of the project, those in the mission of the project, and those inherent in the design of the IIC.

 

438

 

The Implementation of the Integrated Information Center at the University of Minnesota
Joseph Branin, George D'Elia 

The implementation and operation of the Integrated Information Center (IIC) can be divided into three, relatively distinct phases corresponding roughly to the 3 years of the grant, from October 1990 to September 1993. This article presents the story of each phase of the implementation.

 

442

 

The Technological Structure and Services of the IIC
Douglas Lund, Nancy Herther 

This article describes the technological structure of the Integrated Information Center (IIC) and the services which it offered.

 

446

 

The Model Underlying the Measurement of the Impacts of the IIC on the End-Users
Dale Goodhue

This article describes the Task-Technology Fit model that provided the conceptual basis for the assessment of the impacts of the Integrated Information Center (IIC) on the end-users.

 

449

 

The Measurements of the Impacts of the IIC on the End-Users: The Survey
Dale Goodhue, Russell Littlefield, Detmar W. Straub

This article describes the design of the survey employed to measure the impacts of the Integrated Information Center (IIC) on the end-users and reports the results of that survey.

 

454

 

Impacts of an Integrated Information Center Faculty End-Users: A Qualitative Assessment
Lending, Detmar W. Straub

This article describes an ethnographic study of a selected group of faculty end-users; the purpose of this qualitative assessment was to triangulate on several phenomena under investigation to better understand the impact s of the Integrated Information Center (IIC) on end-users work behaviors.

 

466

 

The Evaluation of the IIC Project
Joseph Branin, George D'Elia, Thomas Shaughnessy, Carl Adams 

The authors provide their evaluation of the success of the project.

 

472

 

Implications of the IIC Project for the Education of Information Professionals
Nancy Rhode, Nancy Herther

The challenges of bringing together information professionals from a variety of information agencies with different backgrounds, cultures and skills are discussed in terms of their implications for the education of information professionals.

474

BOOK REVIEWS

 

World Wide Web Journal: Volume 1, Issue 2, Spring 1996.  Key Specifics of the World Wide Web
reviewed by: Karen Campbell

476

 

Introduction to United States Government Information Sources (5th ed.)
By Joe Moreheaf
reviewed by Jerold Nelson

477

LETTERS TO THE EDITOR

   

479

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© 1998 , Association for Information Science
Last update: November 06, 1998