def scale(dataMatrix):
nRows, nCols = shape(dataMatrix)
means = [mean(getCol(dataMatrix, j))
for j in range(nCols)]
stdevs = [stdDeviation(getCol(dataMatrix, j))
for j in range(nCols)]
return means, stdevs
def matrix_product_entry(A, B, i, j):
return dotProduct(getRow(A, i), getCol(B, j))
def matrix_product_entry(A, B, i, j):
return dotProduct(getRow(A, i), getCol(B, j))
def matrixEntry(i, j):
return correlation(getCol(data, i), getCol(data, j))
def matrixEntry(i, j):
return correlation(getCol(data, i), getCol(data, j))
