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Clustering educational digital libra...

Xu, Beijie.

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Clustering educational digital library usage data: Comparisons of latent class analysis and K-means algorithms.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Clustering educational digital library usage data: Comparisons of latent class analysis and K-means algorithms./
作者:	Xu, Beijie.
面頁冊數:	89 p.
附註:	Source: Masters Abstracts International, Volume: 49-06, page: 3902.
Contained By:	Masters Abstracts International49-06.
標題:	Computer science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1494487
ISBN:	9781124691183

Clustering educational digital library usage data: Comparisons of latent class analysis and K-means algorithms.
Xu, Beijie.

Clustering educational digital library usage data: Comparisons of latent class analysis and K-means algorithms. - 89 p.

Source: Masters Abstracts International, Volume: 49-06, page: 3902.

Thesis (M.S.)--Utah State University, 2011.

There are common pitfalls and neglected areas when using clustering approaches to solve educational problems. A clustering algorithm is often used without the choice being justified. Few comparisons between a selected algorithm and a competing algorithm are presented, and results are presented without validation. Lastly, few studies fully utilize data provided in an educational environment to evaluate their findings. In response to these problems, this thesis describes a rigorous study comparing two clustering algorithms in the context of an educational digital library service, called the Instructional Architect.

ISBN: 9781124691183Subjects--Topical Terms:

523869
Computer science.

Clustering educational digital library usage data: Comparisons of latent class analysis and K-means algorithms.
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520 $a There are common pitfalls and neglected areas when using clustering approaches to solve educational problems. A clustering algorithm is often used without the choice being justified. Few comparisons between a selected algorithm and a competing algorithm are presented, and results are presented without validation. Lastly, few studies fully utilize data provided in an educational environment to evaluate their findings. In response to these problems, this thesis describes a rigorous study comparing two clustering algorithms in the context of an educational digital library service, called the Instructional Architect.
520 $a First, a detailed description of the chosen clustering algorithm, namely, latent class analysis (LCA), is presented. Second, three kinds of preprocessed data are separately applied to both the selected algorithm and a competing algorithm, namely, K-means algorithm. Third, a series of comprehensive evaluations on four aspects of each clustering result, i.e., intra-cluster and inter-cluster distances, Davies-Bouldin index, users' demographic profile, and cluster evolution, are conducted to compare the clustering results of LCA and K-means algorithms. Evaluation results show that LCA outperforms K-means in producing consistent clustering results at different settings, finding compact clusters, and finding connections between users' teaching experience and their effectiveness in using the IA. The implication, contributions, and limitation of this research are discussed.
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