Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 1995-1999  (2)
  • 1925-1929
  • hierarchical clustering  (1)
  • partition coefficients  (1)
Material
Years
  • 1995-1999  (2)
  • 1925-1929
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Psychometrika 60 (1995), S. 371-374 
    ISSN: 1860-0980
    Keywords: minimum spanning trees ; hierarchical clustering ; single linkage ; network models ; proximity data ; undirected weighted graphs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Psychology
    Notes: Abstract A theorem is proved stating that the set of all “minimax links”, defined as links minimizing, over paths, the maximum length of links in any path connecting a pair of objects comprising nodes in an undirected weighted graph, comprise the union of all minimum spanning trees of that graph. This theorem is related to methods of fitting network models to dissimilarity data, particularly a method called “Pathfinder” due to Schvaneveldt and his colleagues, as well as to single linkage clustering, and results concerning the relationship between minimum spanning trees and single linkage hierarchical trees.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Mathematical geology 28 (1996), S. 1025-1033 
    ISSN: 1573-8868
    Keywords: partition coefficients ; sorption ; radionuclides ; Kara Sea
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Mathematics
    Notes: Abstract Much interest has been generated in assessing the possible risks of contamination for humans and marine life resulting from the dumping of nuclear waste in Arctic Seas by the former Soviet Union. Models are being used to predict the transport of radionuclides released from the dumping grounds. A key parameter in these models is the partition coefficient representing the uptake potential of marine sediments and seawater for radioactive contaminants. Partition coefficients are dependent upon the independent variables of sediment concentration and the sediment/water radionuclide distribution coefficients. Modelers must use estimated average values for the independent variables because data for these variables are lacking for the Arctic environment. In this note, we illustrate the differences between assuming that partition coefficients can be computed solely from the average values of the independent variables vs. exact probability distributions, and illustrate the technique for one of the radioactive contaminants,137Cs. In general, errors in the sediment partition coefficient can be as high as 67% using average values; for137Cs. the error is about 37%.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...