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|
################################################################################
# Copyright (C) 2013 Jaakko Luttinen
#
# This file is licensed under the MIT License.
################################################################################
"""
Unit tests for `deterministic` module.
"""
import unittest
import numpy as np
import scipy
from numpy import testing
from ..node import Node, Moments
from ..deterministic import tile
from ..stochastic import Stochastic
class TestTile(unittest.TestCase):
def check_message_to_children(self, tiles, u_parent, u_tiled,
dims=None, plates=None):
# Set up the dummy model
class Dummy(Stochastic):
_parent_moments = ()
_moments = Moments()
def __init__(self, u, dims=dims, plates=plates):
super().__init__(dims=dims, plates=plates, initialize=False)
self.u = u
X = Dummy(u_parent, dims=dims, plates=plates)
Y = tile(X, tiles)
u_Y = Y._compute_moments(u_parent)
for (x,y) in zip(u_Y, u_tiled):
self.assertEqual(np.shape(x), np.shape(y),
msg="Incorrect shape.")
testing.assert_allclose(x, y,
err_msg="Incorrect moments.")
def test_message_to_children(self):
"""
Test the moments of Tile node.
"""
# Define th check function
check_message_to_children = self.check_message_to_children
# Check scalar (and broadcasting)
check_message_to_children(2,
(5,),
(5,),
dims=[()],
plates=()),
# Check 1-D
check_message_to_children(2,
([1,2],),
([1,2,1,2],),
dims=[()],
plates=(2,))
# Check N-D
check_message_to_children(2,
([[1,2],
[3,4],
[5,6]],),
([[1,2,1,2],
[3,4,3,4],
[5,6,5,6]],),
dims=[()],
plates=(3,2))
# Check not-last plate
check_message_to_children([2,1],
([[1,2],
[3,4]],),
([[1,2],
[3,4],
[1,2],
[3,4]],),
dims=[()],
plates=(2,2))
# Check several plates
check_message_to_children([2,3],
([[1,2],
[3,4]],),
([[1,2,1,2,1,2],
[3,4,3,4,3,4],
[1,2,1,2,1,2],
[3,4,3,4,3,4]],),
dims=[()],
plates=(2,2))
# Check non-zero dimensional variables
check_message_to_children(2,
([[1,2],
[3,4]],),
([[1,2],
[3,4],
[1,2],
[3,4]],),
dims=[(2,)],
plates=(2,))
# Check several moments
check_message_to_children(2,
([[1,2],
[3,4]],
[1,2]),
([[1,2],
[3,4],
[1,2],
[3,4]],
[1,2,1,2]),
dims=[(2,),()],
plates=(2,))
# Check broadcasting of tiled plate
check_message_to_children(2,
([[1,],
[2,]],),
([[1,],
[2,]],),
dims=[()],
plates=(2,2))
# Check broadcasting of non-tiled plate
check_message_to_children(2,
([[1,2]],),
([[1,2,1,2]],),
dims=[()],
plates=(2,2))
# Check broadcasting of leading plates that are not in parent
check_message_to_children([2,1],
([1,2],),
([1,2],),
dims=[()],
plates=(2,))
def check_message_to_parent(self, tiles, m_children, m_true,
dims=None, plates_parent=None,
plates_children=None):
# Set up the dummy model
class Dummy(Stochastic):
_parent_moments = ()
_moments = Moments()
X = Dummy(dims=dims, plates=plates_parent, initialize=False)
Y = tile(X, tiles)
m = Y._compute_message_to_parent(0, m_children, None)
for (x,y) in zip(m, m_true):
self.assertEqual(np.shape(x), np.shape(y),
msg="Incorrect shape.")
testing.assert_allclose(x, y,
err_msg="Incorrect message.")
def test_message_to_parent(self):
"""
Test the parent message of Tile node.
"""
# Define th check function
check = self.check_message_to_parent
# Check scalar
check(2,
([5,5],),
(10,),
dims=[()],
plates_parent=(),
plates_children=(2,)),
# Check 1-D
check(2,
([1,2,3,4],),
([4,6],),
dims=[()],
plates_parent=(2,),
plates_children=(4,))
# Check N-D
check(2,
([[1,2,7,8],
[3,4,9,0],
[5,6,1,2]],),
([[8,10],
[12,4],
[6,8]],),
dims=[()],
plates_parent=(3,2),
plates_children=(3,4))
# Check not-last plate
check([2,1],
([[1,2],
[3,4],
[5,6],
[7,8]],),
([[6,8],
[10,12]],),
dims=[()],
plates_parent=(2,2),
plates_children=(4,2))
# Check several plates
check([2,3],
([[1,2,1,2,1,2],
[3,4,3,4,3,4],
[1,2,1,2,1,2],
[3,4,3,4,3,4]],),
([[6,12],
[18,24]],),
dims=[()],
plates_parent=(2,2),
plates_children=(4,6))
# Check broadcasting if message has unit axis for tiled plate
check(2,
([[1,],
[2,],
[3,]],),
([[2,],
[4,],
[6,]],),
dims=[()],
plates_parent=(3,2),
plates_children=(3,4))
# Check broadcasting if message has unit axis for non-tiled plate
check(2,
([[1,2,3,4]],),
([[4,6]],),
dims=[()],
plates_parent=(3,2),
plates_children=(3,4))
# Check non-zero dimensional variables
check(2,
([[1,2],
[3,4],
[5,6],
[7,8]],),
([[6,8],
[10,12]],),
dims=[(2,)],
plates_parent=(2,),
plates_children=(4,))
# Check several moments
check(2,
([[1,2],
[3,4],
[5,6],
[7,8]],
[1,2,3,4]),
([[6,8],
[10,12]],
[4,6]),
dims=[(2,),()],
plates_parent=(2,),
plates_children=(4,))
def check_mask_to_parent(self, tiles, mask_child, mask_true,
plates_parent=None,
plates_children=None):
# Set up the dummy model
class Dummy(Stochastic):
_moments = Moments()
_parent_moments = ()
X = Dummy(dims=[()], plates=plates_parent, initialize=False)
Y = tile(X, tiles)
mask = Y._compute_weights_to_parent(0, mask_child) != 0
self.assertEqual(np.shape(mask), np.shape(mask_true),
msg="Incorrect shape.")
testing.assert_equal(mask, mask_true,
err_msg="Incorrect mask.")
def test_mask_to_parent(self):
"""
Test the mask message to parent of Tile node.
"""
# Define th check function
check = self.check_mask_to_parent
# Check scalar parent
check(2,
[True,False],
True,
plates_parent=(),
plates_children=(2,))
check(2,
[False,False],
False,
plates_parent=(),
plates_children=(2,))
# Check 1-D
check(2,
[True,False,False,False],
[True,False],
plates_parent=(2,),
plates_children=(4,))
# Check N-D
check(2,
[[True,False,True,False],
[False,True,False,False]],
[[True,False],
[False,True]],
plates_parent=(2,2),
plates_children=(2,4))
# Check not-last plate
check([2,1],
[[True,False],
[False,True],
[True,False],
[False,False]],
[[True,False],
[False,True]],
plates_parent=(2,2),
plates_children=(4,2))
# Check several plates
check([2,3],
[[False,False,True,False,False,False],
[False,False,False,False,False,False],
[False,False,False,False,False,False],
[False,True,False,False,False,False]],
[[True,False],
[False,True]],
plates_parent=(2,2),
plates_children=(4,6))
# Check broadcasting if message has unit axis for tiled plate
check(2,
[[True,],
[False,],
[True,]],
[[True,],
[False,],
[True,]],
plates_parent=(3,2),
plates_children=(3,4))
# Check broadcasting if message has unit axis for non-tiled plate
check(2,
[[False,False,False,True]],
[[False,True]],
plates_parent=(3,2),
plates_children=(3,4))
|
