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CLASSIFICATION
2008
71views more  CLASSIFICATION 2008»
13 years 11 months ago
Bounds of Resemblance Measures for Binary (Presence/Absence) Variables
Abstract: Bounds of association coefficients for binary variables are derived using the arithmetic-geometric-harmonic mean inequality. More precisely, it is shown which presence/ab...
Matthijs J. Warrens
CLASSIFICATION
2008
84views more  CLASSIFICATION 2008»
13 years 11 months ago
Degenerating Families of Dendrograms
Dendrograms used in data analysis are ultrametric spaces, hence objects of nonarchimedean geometry. It is known that there exist p-adic representations of dendrograms. Completed b...
Patrick Erik Bradley
CLASSIFICATION
2008
68views more  CLASSIFICATION 2008»
13 years 11 months ago
The Metric Cutpoint Partition Problem
Let G = (V, E, w) be a graph with vertex and edge sets V and E, respectively, and w : E IR+ a function which assigns a positive weight or length to each edge of G. G is called a r...
Alain Hertz, Sacha Varone
CLASSIFICATION
2008
54views more  CLASSIFICATION 2008»
13 years 11 months ago
On the Indeterminacy of Resemblance Measures for Binary (Presence/Absence) Data
: Many similarity coefficients for binary data are defined as fractions. For certain resemblance measures the denominator may become zero. If the denominator is zero the value of t...
Matthijs J. Warrens
CLASSIFICATION
2008
111views more  CLASSIFICATION 2008»
13 years 11 months ago
Probabilistic D-Clustering
: We present a new iterative method for probabilistic clustering of data. Given clusters, their centers and the distances of data points from these centers, the probability of clus...
Adi Ben-Israel, Cem Iyigun
CLASSIFICATION
2008
73views more  CLASSIFICATION 2008»
13 years 11 months ago
Solving Non-Uniqueness in Agglomerative Hierarchical Clustering Using Multidendrograms
: In agglomerative hierarchical clustering, pair-group methods suffer from a problem of non-uniqueness when two or more distances between different clusters coincide during the ama...
Alberto Fernández, Sergio Gómez