Multivariate Methods in Plant Ecology: I. Association-Analysis in Plant Communities

Williams, W. T.; Lambert, J. M.

doi:10.2307/2257249

Cited by 344 publications

(95 citation statements)

References 5 publications

(4 reference statements)

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“…At each subsequent step, mona splits all available clusters. The variable used for splitting a cluster is selected by a robust version of the method of Williams and Lambert (1959); for further information see [KR,chapter 7].…”

Section: Monothetic Analysis: Function Monamentioning

confidence: 99%

Clustering in an Object-Oriented Environment

Struyf¹,

Hubert²,

Rousseeuw³

1996

J. Stat. Soft.

182

146

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This paper describes the incorporation of seven stand-alone clustering programs into S-PLUS, where they can now be used in a much more flexible way. The original Fortran programs carried out new cluster analysis algorithms introduced in the book of Kaufman and Rousseeuw (1990). These clustering methods were designed to be robust and to accept dissimilarity data as well as objects-by-variables data. Moreover, they each provide a graphical display and a quality index reflecting the strength of the clustering. The powerful graphics of S-PLUS made it possible to improve these graphical representations considerably. The integration of the clustering algorithms was performed according to the object-oriented principle supported by S-PLUS. The new functions have a uniform interface, and are compatible with existing S-PLUS functions. We will describe the basic idea and the use of each clustering method, together with its graphical features. Each function is briefly illustrated with an example.

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Section: Monothetic Analysis: Function Monamentioning

confidence: 99%

Clustering in an Object-Oriented Environment

Struyf¹,

Hubert²,

Rousseeuw³

1996

J. Stat. Soft.

182

146

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show abstract

“…A computer analysis of the vegetation data ng the summation of Chi Square to divide the pooulation into groups of species with iimal heterogeneity (Williams an Lambert, 1959) will permit mapping areas of tistically similar vegetation whic can then be correlated with environmental paraters. The distribution of quadra s within a plot grid permits analysis of the data ier by I m square units or 1 x 2--m units, thus permitting an evaluation of the in-.nce of quadrat size on the analysis.…”

Section: Vegetation Studiesmentioning

confidence: 99%

Pedo-Ecological Investigations, Barrow, Alaska

Brown¹,

Johnson²

1965

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“…In the classical approach of Williams & Lambert (1959), the so-called Association-Analysis, communities are defined by the presence or absence of single species. This is highly dependent on the vagaries of sampling; many workers have felt the method may result in botanical over simplification, so that nowadays polythetic methods are more usually applied.…”

Section: Methods Of Classification Analysismentioning

confidence: 99%

Classification and Ordination Methods as a Tool for Analyzing of Plant Communities

Chahouki¹

2013

Multivariate Analysis in Management, Engineering and the Sciences

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Multivariate Methods in Plant Ecology: I. Association-Analysis in Plant Communities

Cited by 344 publications

References 5 publications

Clustering in an Object-Oriented Environment

Clustering in an Object-Oriented Environment

Pedo-Ecological Investigations, Barrow, Alaska

Classification and Ordination Methods as a Tool for Analyzing of Plant Communities

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