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Symbols and Abbreviations

Global Symbols

number of features or primitives
number of classes or clusters
number of patterns
number of weights
class or cluster i, i=l, ... , c
number of patterns of class or cluster mi
weight i
bias
approximation error
pattern set
class set

Mathematical Symbols

variable
value of x at iteration r
i-th component of vector or string x
i-th component of vector xk
vector (column) or string
transpose vector (row)
vector x increment
inner product of x and y
i-th row, j-th column element of matrix A
matrix
transpose of matrix A
inverse of matrix A
determinant of matrix A
pseudo inverse of matrix A
identity matrix
factorial of k, k!= k(k-l)(k-2) ... 2.1
combinations of n elements taken k at a time

derivative of E relative to w evaluated at w*