Duch, Włodzislaw ; Adamczak, Rafał ; Diercksen, Geerd H.F.
Rutkowska, Danuta - ed. ; Zadeh, Lotfi A. - ed.
Classification, association and pattern completion using neural similarity based methods
Neuro-Fuzzy and Soft Computing
Group publication title:
Subject and Keywords:
neural networks ; classification ; associations ; pattern recognition
A framework for Similarity-Based Methods (SBMs) includes many classification models as special cases: neural networks of the Radial Basis Function type, Feature Space Mapping neurofuzzy networks based on separable transfer functions, Learning Vector Quantization, variants of the k nearest neighbor methods and several new models that may be presented in a network form. Multilayer Perceptrons (MLPs) use scalar products to compute a weighted activation of neurons, combining soft hyperplanes to provide decision borders. ; Distance-based multilayer perceptrons (D-MLPs) evaluate the similarity of inputs to weights offering a natural generalization of standard MLPs. A cluster-based initialization procedure determining the architecture and values of all adaptive parameters is described. Networks implementing SBM methods are useful not only for classification and approximation, but also as associative memories, in problems requiring pattern completion, offering an efficient way to deal with missing values. ; Non-Euclidean distance functions may also be introduced by normalization of the input vectors in an extended feature space. Both the approaches dramatically influence the shapes of decision borders. An illustrative example showing these changes is provided.
Zielona Góra: Uniwersytet Zielonogórski
AMCS, volume 10, number 4 (2000) ; click here to follow the link