Analiza korespondencije - metoda glavnih komponenti kategorijskih podataka

Mađarević, Jelena (2015) Analiza korespondencije - metoda glavnih komponenti kategorijskih podataka. Diploma thesis, Faculty of Science > Department of Mathematics.

[img] PDF
Restricted to Registered users only
Language: Croatian

Download (380kB) | Request a copy

Abstract

Correspondence analysis is primary a multivariate descriptive method of analysis that presents the relations between rows and columns in a frequency table graphically as point in a common low-dimensional space. Some of following criteria should be satisfied if the advantages of the method are to be exploited to the full: 1. The data matrix should be large, making it difficult to discover the structure by means of simple statistical analyses. 2. The variables need to be homogenous, so that it is meaningful to calculate distances between categories. 3. The method is most suitable for the data for which the structure is unknown. Correspondence analysis is a very flexible method. First it imposes few requirements as regards the dana themselves and, second, it allows the use of supplementary information. The method is an exploratory technique and thus serves as useful supplement to other methods based on hypothesis testing. Correspondence analysis is a very useful method for different kind of sciences in fields like ecology, social, biomedical sciences etc. The graphical display is very beneficial for communication complex relations between variables/categories. Furthermore, it complements other new important methods such as loglinear models. The disadvantages of the method are that the distances between the points of different sets is not defined and it does not include significance tests for effects or interactions.

Item Type: Thesis (Diploma thesis)
Supervisor: Jazbec, Anamarija
Date: 2015
Number of Pages: 39
Subjects: NATURAL SCIENCES > Mathematics
Divisions: Faculty of Science > Department of Mathematics
Depositing User: Iva Prah
Date Deposited: 21 Oct 2015 12:02
Last Modified: 21 Oct 2015 12:02
URI: http://digre.pmf.unizg.hr/id/eprint/4158

Actions (login required)

View Item View Item