Class OnesStartVector

source code

     object --+    
              |    
BaseStartVector --+
                  |
                 OnesStartVector

A start vector of ones.

Parameters
----------
normalise : Bool. If True, normalise the randomly created vectors
        Default is False

Examples
--------
>>> from parsimony.utils.start_vectors import OnesStartVector

# Without normalization
>>> start_vector = OnesStartVector(normalise=False)
>>> ones = start_vector.get_vector(3)
>>> print ones
[[ 1.]
 [ 1.]
 [ 1.]]
>>> print maths.norm(ones)
1.73205080757

# With normalization
>>> start_vector_normalized = OnesStartVector(normalise=True)
>>> ones_normalized = start_vector_normalized.get_vector(3)
>>> print ones_normalized
[[ 0.57735027]
 [ 0.57735027]
 [ 0.57735027]]
>>> print maths.norm(ones_normalized)
1.0

Return vector of ones of chosen shape

Parameters
----------
size : Positive integer. Size of the vector to generate. The shape of
        the output is (size, 1).

Examples
--------
>>> from parsimony.utils.start_vectors import OnesStartVector
>>> start_vector = OnesStartVector()
>>> ones = start_vector.get_vector(3)
>>> print ones
[[ 1.]
 [ 1.]
 [ 1.]]