Overview of Author Cocitation Analysis Procedures

Overview of Author Cocitation Analysis Procedures

Sean Eom (Southeast Missouri State University, USA)
DOI: 10.4018/978-1-59904-738-6.ch007
OnDemand PDF Download:


The previous two chapters examined the two alternative approaches of retrieving cocitation counts using custom databases and cocitation frequency counts extraction systems. The cocitaion frequency counts are the inputs to the SAS or SPSS systems for multivariate statistical analysis. The primary purpose of this chapter is to overview several important steps in author cocitation analysis. ACA consists of the six major steps beginning with the selection of author sets for further analysis, then collection of cocitation frequency counts, statistical analysis of the cocitation frequency counts, and the validation and interpretation of statistical outputs.
Chapter Preview


ACA consists of the assembling and interpretation of bibliographical statistics taken from the cited references which are taken from the selected citing articles. (See Figure 1).

Figure 1.

Author cocitation analysis steps

  • 1.

    Selection of Author

  • 2.

    Collection of Cocitation Frequencies

  • 3.

    Preparation of SAS Input Files

  • 4.

    Multivariate Statistical Analysis of Correlation Matrix

  • 5.

    Output Preparation

  • 6.

    Validation and Interpretation


Subjective (Top-Down) Approach

The first approach may start with a pre-determined list of authors or with the selection of a list of authors to be searched as cited references in the ISI databases as discussed by McCain (1990). The predetermined list of authors can be compiled by:

  • Personal knowledge

  • Consultation with researchers in the area to be studied

  • Conducting surveys

  • Using directories

  • Organizational membership

  • Conference attendance rosters

  • Lists of awards, etc.

Compiling a predetermined list of authors inevitably involves subjective judgments. This approach can be efficient because no lengthy time is spent finalizing a list of authors for further analysis. A critical weakness of this approach is that it may often fail to identify emerging scholars in a given area of an academic discipline. The majority of previous research in this area has used the subjective approach of using a predetermined list of eminent scholars (M. J. Culnan, 1986; McCain, 1986). The reason for doing so was not because this approach is superior but because most of the previous research used commercial online bibliographic databases to retrieve the cocitation frequency matrix. It is virtually impossible to scan the entire citation databases to screen and select an author set without using the personal judgments of researchers.


Objective (Bottom-Up) Approach

The objective approach does not start with a predefined list of authors at all. No subjective judgments are necessary. It will be very difficult to apply this objective approach to the commercial databases, such as social science citation index, due to the size of the databases and high costs. However, it is relatively manageable to screen the whole custom-built databases to select a list of authors for further analysis. ACA, using custom databases, allows researchers to unobtrusively select authors for the study. Emerging scholars are more likely to be included in the selection process, unlike the subjective approach discussed earlier.

Complete Chapter List

Search this Book:
Table of Contents
Sean B. Eom
Chapter 1
Sean Eom
Author cocitation analysis (ACA) is a branch of bibliometrics. Bibliometrics/informetrics is one of the older areas of library and information... Sample PDF
An Introduction to Bibliometrics and Informetrics
Chapter 2
Sean Eom
This chapter introduces online citation data retrieval using the Web of Science and Dialog Classic. The Web of Science provides access to... Sample PDF
An Introduction to Online Data Retrieval and Issues
Chapter 3
Sean Eom
Virtually all ACA studies using Thomson’s ISI citation indexes used only the first author to retrieve the cocitation counts. Therefore, this has... Sample PDF
The Impact of the ISI Convention of Relying on only the Name of the First Author on ACA Results: An Empirical Investigation
Chapter 4
Diagonal Values in ACA  (pages 91-121)
Sean Eom
Diagonal values in the cocitation frequency counts matrix are a fundamental issue in ACA study. Diagonal values are the co-citation frequency counts... Sample PDF
Diagonal Values in ACA
Chapter 5
The Fox-Base Approach  (pages 123-136)
Sean Eom
Chapter II introduced online cocitation counts retrieval using Dialog Classic and citation index files. Certainly Dialog Classic is an attractive... Sample PDF
The Fox-Base Approach
Chapter 6
Sean Eom
This chapter shows another alternative approach of building citation database and retrieval system using the spreadsheet program, Microsoft Excel.... Sample PDF
Building Databases and the Cocitation Counts Generation System Using Microsoft Excel Program in Visual Basics
Chapter 7
Sean Eom
The previous two chapters examined the two alternative approaches of retrieving cocitation counts using custom databases and cocitation frequency... Sample PDF
Overview of Author Cocitation Analysis Procedures
Chapter 8
Sean Eom
This chapter describes the factor procedure. The first section of the chapter begins with the definition of factor analysis. This is the statistical... Sample PDF
Principal Component Analysis Using the Factor Procedure
Chapter 9
Sean Eom
This chapter describes the distance and cluster procedure of the SAS system. SAS version 9 introduced the proc distance procedure. All previous... Sample PDF
The Distance and Cluster Procedure
Chapter 10
Multidimensional Scaling  (pages 225-254)
Sean Eom
This chapter discusses multidimensional scaling (MDS) procedures. MDS is a class of multivariate statistical techniques/procedures to produce two or... Sample PDF
Multidimensional Scaling
Chapter 11
Sean Eom
This chapter briefly introduces the use of SPSS version 15.0 to conduct ACA analysis. The SPSS accepts datafiles in many different formats including... Sample PDF
ACA Analysis with the 15.0.0 Verison of SPSS for Windows
Chapter 12
Sean Eom
This is the capstone chapter that shows how the concepts, tools, and techniques discussed in each of the previous chapters can be applied in... Sample PDF
The Intellectual Structure of Decision Support Systems Research (1969-1989)
Chapter 13
Sean Eom
This chapter extends an earlier benchmark study (Sean B. Eom, 1995) which examined the intellectual structure, major themes, and reference... Sample PDF
The Changing Structure of Decision Support Systems Research: An Empirical Investigation through Author Cocitation Mapping (1990-1999)
About the Author