def test_mcr_semilearned_both_c_st():
"""
Test the special case when C & ST are provided, requiring C-fix ST-fix to
be provided
"""
M = 21
N = 21
P = 101
n_components = 3
C_img = np.zeros((M, N, n_components))
C_img[..., 0] = np.dot(np.ones((M, 1)), np.linspace(0.1, 1, N)[None, :])
C_img[..., 1] = np.dot(np.linspace(0.1, 1, M)[:, None], np.ones((1, N)))
C_img[..., 2] = 1 - C_img[..., 0] - C_img[..., 1]
C_img = C_img / C_img.sum(axis=-1)[:, :, None]
St_known = np.zeros((n_components, P))
St_known[0, 30:50] = 1
St_known[1, 50:70] = 2
St_known[2, 70:90] = 3
St_known += 1
C_known = C_img.reshape((-1, n_components))
D_known = np.dot(C_known, St_known)
C_guess = 1 * C_known
C_guess[:, 2] = np.abs(np.random.randn(int(M * N)))
mcrals = McrAls(max_iter=50,
tol_increase=100,
tol_n_increase=10,
st_constraints=[ConstraintNonneg()],
c_constraints=[ConstraintNonneg(),
ConstraintNorm()],
tol_err_change=1e-10)
mcrals.fit(D_known,
C=C_guess,
ST=St_known,
c_fix=[0, 1],
st_fix=[0],
c_first=True)
assert_equal(mcrals.C_[:, 0], C_known[:, 0])
assert_equal(mcrals.C_[:, 1], C_known[:, 1])
assert_equal(mcrals.ST_[0, :], St_known[0, :])
# ST-solve first
mcrals.fit(D_known,
C=C_guess,
ST=St_known,
c_fix=[0, 1],
st_fix=[0],
c_first=False)
assert_equal(mcrals.C_[:, 0], C_known[:, 0])
assert_equal(mcrals.C_[:, 1], C_known[:, 1])
assert_equal(mcrals.ST_[0, :], St_known[0, :])
def test_props_features_samples_targets(dataset):
""" Test mcrals properties for features, targets, samples """
C_known, D_known, St_known = dataset
mcrals = McrAls()
mcrals.fit(D_known, ST=St_known)
assert mcrals.n_targets == C_known.shape[-1] # n_components
assert mcrals.n_samples == D_known.shape[0]
assert mcrals.n_features == D_known.shape[-1]
def test_mcr_ideal_default(dataset):
""" Provides C/St_known so optimal should be 1 iteration """
C_known, D_known, St_known = dataset
mcrals = McrAls()
mcrals.fit(D_known, ST=St_known)
assert_equal(1, mcrals.n_iter_opt)
assert ((mcrals.D_ - D_known)**2).mean() < 1e-10
assert ((mcrals.D_opt_ - D_known)**2).mean() < 1e-10
mcrals.fit(D_known, C=C_known)
assert_equal(2, mcrals.n_iter_opt)
assert ((mcrals.D_ - D_known)**2).mean() < 1e-10
assert ((mcrals.D_opt_ - D_known)**2).mean() < 1e-10
def test_mcr_tol_err_change(dataset):
""" Test MCR exits due error increasing by a value """
C_known, D_known, St_known = dataset
mcrals = McrAls(max_iter=50,
c_regr='OLS',
st_regr='OLS',
st_constraints=[ConstraintNonneg()],
c_constraints=[ConstraintNonneg(),
ConstraintNorm()],
tol_increase=None,
tol_n_increase=None,
tol_err_change=1e-20,
tol_n_above_min=None)
mcrals.fit(D_known, C=C_known)
assert mcrals.exit_tol_err_change
def test_mcr_max_iterations(dataset):
""" Test MCR exits at max_iter"""
C_known, D_known, St_known = dataset
# Seeding with a constant of 0.1 for C, actually leads to a bad local
# minimum; thus, the err_change gets really small with a relatively bad
# error. The tol_err_change is set to None, so it makes it to max_iter.
mcrals = McrAls(max_iter=50,
c_regr='OLS',
st_regr='OLS',
st_constraints=[ConstraintNonneg()],
c_constraints=[ConstraintNonneg(),
ConstraintNorm()],
tol_increase=None,
tol_n_increase=None,
tol_err_change=None,
tol_n_above_min=None)
mcrals.fit(D_known, C=C_known * 0 + 0.1)
assert mcrals.exit_max_iter_reached
def test_mcr_tol_increase(dataset):
""" Test MCR exits due error increasing above a tolerance fraction"""
C_known, D_known, St_known = dataset
# Seeding with a constant of 0.1 for C, actually leads to a bad local
# minimum; thus, the err_change gets really small with a relatively bad
# error.
mcrals = McrAls(max_iter=50,
c_regr='OLS',
st_regr='OLS',
st_constraints=[ConstraintNonneg()],
c_constraints=[ConstraintNonneg(),
ConstraintNorm()],
tol_increase=0,
tol_n_increase=None,
tol_err_change=None,
tol_n_above_min=None)
mcrals.fit(D_known, C=C_known * 0 + 0.1)
assert mcrals.exit_tol_increase
def test_mcr_errors():
# Providing both C and S^T estimates
with pytest.raises(TypeError):
mcrals = McrAls()
mcrals.fit(np.random.randn(10,5), C=np.random.randn(10,3),
ST=np.random.randn(3,5))
# Providing no estimates
with pytest.raises(TypeError):
mcrals = McrAls()
mcrals.fit(np.random.randn(10,5))
# Unknown regression method
with pytest.raises(ValueError):
mcrals = McrAls(c_regr='NOTREAL')
# regression object with no fit method
with pytest.raises(ValueError):
mcrals = McrAls(c_regr=print)
def test_mcr_ideal_str_regressors(dataset):
""" Test MCR with string-provded regressors"""
C_known, D_known, St_known = dataset
mcrals = McrAls(c_regr='OLS', st_regr='OLS')
mcrals.fit(D_known, ST=St_known, verbose=True)
assert_equal(1, mcrals.n_iter_opt)
assert isinstance(mcrals.c_regressor, pymcr.regressors.OLS)
assert isinstance(mcrals.st_regressor, pymcr.regressors.OLS)
mcrals = McrAls(c_regr='NNLS', st_regr='NNLS')
mcrals.fit(D_known, ST=St_known)
assert_equal(1, mcrals.n_iter_opt)
assert isinstance(mcrals.c_regressor, pymcr.regressors.NNLS)
assert isinstance(mcrals.st_regressor, pymcr.regressors.NNLS)
assert ((mcrals.D_ - D_known)**2).mean() < 1e-10
assert ((mcrals.D_opt_ - D_known)**2).mean() < 1e-10
# Provided C_known this time
mcrals = McrAls(c_regr='OLS', st_regr='OLS')
mcrals.fit(D_known, C=C_known)
# Turns out some systems get it in 1 iteration, some in 2
# assert_equal(1, mcrals.n_iter_opt)
assert_equal(True, mcrals.n_iter_opt <= 2)
assert ((mcrals.D_ - D_known)**2).mean() < 1e-10
assert ((mcrals.D_opt_ - D_known)**2).mean() < 1e-10
def test_mcr_tol_n_above_min(dataset):
"""
Test MCR exits due to half-terating n times with error above the minimum error.
Note: On some CI systems, the minimum err bottoms out; thus, tol_n_above_min
needed to be set to 0 to trigger a break.
"""
C_known, D_known, St_known = dataset
mcrals = McrAls(max_iter=50,
c_regr='OLS',
st_regr='OLS',
st_constraints=[ConstraintNonneg()],
c_constraints=[ConstraintNonneg(),
ConstraintNorm()],
tol_increase=None,
tol_n_increase=None,
tol_err_change=None,
tol_n_above_min=0)
mcrals.fit(D_known, C=C_known * 0 + 0.1)
assert mcrals.exit_tol_n_above_min
def test_mcr_c_semilearned():
""" Test when C items are fixed, i.e., enforced to be the same as the input, always """
M = 21
N = 21
P = 101
n_components = 3
C_img = np.zeros((M, N, n_components))
C_img[..., 0] = np.dot(np.ones((M, 1)), np.linspace(0, 1, N)[None, :])
C_img[..., 1] = np.dot(np.linspace(0, 1, M)[:, None], np.ones((1, N)))
C_img[..., 2] = 1 - C_img[..., 0] - C_img[..., 1]
C_img = C_img / C_img.sum(axis=-1)[:, :, None]
St_known = np.zeros((n_components, P))
St_known[0, 30:50] = 1
St_known[1, 50:70] = 2
St_known[2, 70:90] = 3
St_known += 1
C_known = C_img.reshape((-1, n_components))
D_known = np.dot(C_known, St_known)
C_guess = 1 * C_known
C_guess[:, 2] = np.random.randn(int(M * N))
mcrals = McrAls(max_iter=50,
tol_increase=100,
tol_n_increase=10,
st_constraints=[ConstraintNonneg()],
c_constraints=[ConstraintNonneg(),
ConstraintNorm()],
tol_err_change=1e-10)
mcrals.fit(D_known, C=C_guess, c_fix=[0, 1])
assert_equal(mcrals.C_[:, 0], C_known[:, 0])
assert_equal(mcrals.C_[:, 1], C_known[:, 1])
def test_mcr():
M = 21
N = 21
P = 101
n_components = 2
C_img = np.zeros((M,N,n_components))
C_img[...,0] = np.dot(np.ones((M,1)),np.linspace(0,1,N)[None,:])
C_img[...,1] = 1 - C_img[...,0]
ST_known = np.zeros((n_components, P))
ST_known[0,40:60] = 1
ST_known[1,60:80] = 2
C_known = C_img.reshape((-1, n_components))
D_known = np.dot(C_known, ST_known)
mcrals = McrAls(max_iter=50, tol_increase=100, tol_n_increase=10,
st_constraints=[ConstraintNonneg()],
c_constraints=[ConstraintNonneg(), ConstraintNorm()],
tol_err_change=1e-10)
mcrals._saveall_st = False
mcrals._saveall_c = False
mcrals.fit(D_known, ST=ST_known)
assert_equal(1, mcrals.n_iter_opt)
mcrals = McrAls(max_iter=50, tol_increase=100, tol_n_increase=10,
c_regr='OLS', st_regr='OLS',
st_constraints=[ConstraintNonneg()],
c_constraints=[ConstraintNonneg(), ConstraintNorm()],
tol_err_change=1e-10)
mcrals.fit(D_known, ST=ST_known)
assert_equal(1, mcrals.n_iter_opt)
assert ((mcrals.D_ - D_known)**2).mean() < 1e-10
assert ((mcrals.D_opt_ - D_known)**2).mean() < 1e-10
mcrals = McrAls(max_iter=50, tol_increase=100, tol_n_increase=10,
c_regr='NNLS', st_regr='NNLS',
st_constraints=[ConstraintNonneg()],
c_constraints=[ConstraintNonneg(), ConstraintNorm()],
tol_err_change=1e-10)
mcrals.fit(D_known, ST=ST_known)
assert_equal(1, mcrals.n_iter_opt)
assert ((mcrals.D_ - D_known)**2).mean() < 1e-10
assert ((mcrals.D_opt_ - D_known)**2).mean() < 1e-10
mcrals = McrAls(max_iter=50, tol_increase=100, tol_n_increase=10,
c_regr='OLS', st_regr='OLS',
st_constraints=[ConstraintNonneg()],
c_constraints=[ConstraintNonneg(), ConstraintNorm()],
tol_err_change=1e-10)
mcrals.fit(D_known, C=C_known)
# Turns out some systems get it in 1 iteration, some in 2
# assert_equal(1, mcrals.n_iter_opt)
assert_equal(True, mcrals.n_iter_opt<=2)
assert ((mcrals.D_ - D_known)**2).mean() < 1e-10
assert ((mcrals.D_opt_ - D_known)**2).mean() < 1e-10
# Seeding with a constant of 0.1 for C, actually leads to a bad local
# minimum; thus, the err_change gets really small with a relatively bad
# error. This is not really a test, but it does test out breaking
# from tol_err_change
mcrals = McrAls(max_iter=50, tol_increase=100, tol_n_increase=10,
c_regr='OLS', st_regr='OLS',
st_constraints=[ConstraintNonneg()],
c_constraints=[ConstraintNonneg(), ConstraintNorm()],
tol_err_change=1e-10)
mcrals.fit(D_known, C=C_known*0 + 0.1)
# Seeding with a constant of 0.1 for C, actually leads to a bad local
# minimum; thus, the err_change gets really small with a relatively bad
# error. This is not really a test, but it does test out breaking
# from tol_err_change
mcrals = McrAls(max_iter=50, tol_increase=100, tol_n_increase=10,
c_regr='OLS', st_regr='OLS',
st_constraints=[ConstraintNonneg()],
c_constraints=[ConstraintNonneg(), ConstraintNorm()],
tol_err_change=None)
mcrals.fit(D_known, C=C_known*0 + 0.1)
assert_equal(mcrals.n_iter, 50)
#Allowed Noise Percentage
noise = 5
#manual
manual = False
D = np.asarray((pd.read_csv('Total_MCR_CuSSZ13.dat', sep='\t', header=None)).values)
if manual == False:
#Run SVD
eigens, explained_variance_ratio = svd.svd(D, nSVD)
nPure = np.int(input('Number of Principle Components :'))
#Run Simplisma
S, C_u, C_c = simplisma.pure(D.T, nPure, noise, True)
else:
S = np.asarray((pd.read_csv('sopt_5c2.dat', sep='\t', header=None)).values).T
#Run MCR
mcrals = McrAls(max_iter=50, st_regr='NNLS', c_regr='NNLS',
c_constraints=[ConstraintNonneg(), ConstraintNorm()])
mcrals.fit(D, ST=S.T, verbose=True)
print('\nFinal MSE: {:.7e}'.format(mcrals.err[-1]))
plt.subplot(2, 1, 1)
plt.plot(mcrals.ST_opt_.T)
plt.subplot(2, 1, 2)
plt.plot(mcrals.C_opt_)
plt.show()