English Mathematical Terminology

For many of you, this is the first time you have run into complex mathematical expressions described in English. The following mini-guide will give the English forms of most of the mathematical terms used in this course.

f(x)	f of x
	The sum over o, The sum from t equals zero to n
neti	net sub i
	The partial derivative of E with respect to w-i-j, or... The partial of E with respect to w-i-j
	Delta w-i-j
	A sub i is the set of (nodes) j, such that there exists a weight from j to i.
	The vector x.
WT	The transpose of the matrix W, or... W-transpose
tanh(x)	The hyperbolic tangent of x, or... tan-h-x
xy	x to the power of y, or... x to the y
	The modulus of A, or... The absolute magnitude of A.
	The square root of A, or... root A.
	The gradient of the error with respect to the weights at time t.

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