def get_representations_fchl(atoms, coordinates_list):
replist = []
for coordinates in coordinates_list:
rep = fchl.generate_representation(coordinates,
atoms,
max_size=30,
cut_distance=10**6)
replist.append(rep)
return replist
def test_krr_fchl_atomic():
test_dir = os.path.dirname(os.path.realpath(__file__))
# Parse file containing PBE0/def2-TZVP heats of formation and xyz filenames
data = get_energies(test_dir + "/data/hof_qm7.txt")
# Generate a list of qml.Compound() objects"
mols = []
for xyz_file in sorted(data.keys())[:10]:
# Initialize the qml.Compound() objects
mol = qml.Compound(xyz=test_dir + "/qm7/" + xyz_file)
# Associate a property (heat of formation) with the object
mol.properties = data[xyz_file]
# This is a Molecular Coulomb matrix sorted by row norm
mol.representation = generate_representation(mol.coordinates, \
mol.nuclear_charges, cut_distance=1e6)
mols.append(mol)
X = np.array([mol.representation for mol in mols])
# Set hyper-parameters
sigma = 2.5
K = get_local_symmetric_kernels(X, [sigma])[0]
K_test = np.zeros((len(mols), len(mols)))
for i, Xi in enumerate(X):
for j, Xj in enumerate(X):
K_atomic = get_atomic_kernels(Xi[:mols[i].natoms],
Xj[:mols[j].natoms], [sigma])[0]
K_test[i, j] = np.sum(K_atomic)
assert np.invert(np.all(
np.isnan(K_atomic))), "FCHL atomic kernel contains NaN"
if (i == j):
K_atomic_symmetric = get_atomic_symmetric_kernels(
Xi[:mols[i].natoms], [sigma])[0]
assert np.allclose(K_atomic, K_atomic_symmetric
), "Error in FCHL symmetric atomic kernels"
assert np.invert(np.all(np.isnan(K_atomic_symmetric))
), "FCHL atomic symmetric kernel contains NaN"
assert np.allclose(K, K_test), "Error in FCHL atomic kernels"
def unique(atoms, coordinates_list, method="rmsd", threshold=None):
"""
@param
coordinates_list
method
@return
unique_list
"""
unique_list = [coordinates_list[0]]
idx_list = [0]
if method == "qml":
replist = []
for coordinates in coordinates_list:
rep = fchl.generate_representation(coordinates,
atoms,
max_size=20,
cut_distance=10**6)
replist.append(rep)
replist = np.array(replist)
# fchl uniqueness
sigmas = [0.625, 1.25, 2.5, 5.0, 10.0]
sigmas = [0.8]
fchl_kernels = fchl.get_global_symmetric_kernels(
replist,
kernel_args={"sigma": sigmas},
cut_distance=10**6,
alchemy="off")
idx_list = unique_from_kernel(fchl_kernels[0])
elif method == "rmsd":
threshold = 0.004
for i, coordinates in enumerate(coordinates_list):
if not exists(unique_list, coordinates):
unique_list.append(coordinates)
idx_list.append(i)
return idx_list
def get_representations_fchl(charge_list, coordinates_list, parameters):
nmax = parameters['nmax']
cut_distance = parameters['cut_distance']
rep_list = []
for atoms, coordinates in zip(charge_list, coordinates_list):
rep = qml_fchl.generate_representation(
coordinates,
atoms,
max_size=nmax,
neighbors=nmax,
cut_distance=cut_distance)
rep_list.append(rep)
rep_list = np.array(rep_list)
return rep_list
def get_fchl_representations(atoms_list,
coordinates_list,
nmax,
cut_distance=1e6):
rep_list = []
charge_list = []
for atoms in atoms_list:
charge_list.append([get_atom(atom) for atom in atoms])
for atoms, coordinates in zip(charge_list, coordinates_list):
rep = fchl.generate_representation(coordinates,
atoms,
max_size=nmax,
neighbors=nmax,
cut_distance=cut_distance)
rep_list.append(rep)
rep_list = np.array(rep_list)
return rep_list
trainset = open('/ihome/ghutchison/dlf57/ml-benchmark/train-ani.pkl', 'rb')
anitrain = pickle.load(trainset)
reps = []
energies = []
for ani in anitrain:
try:
coords = ani['coordinates']
elements = ani['species']
energy = ani['energy']
nuc = []
for k in range(len(elements)):
at_num = __nuc['{}'.format(elements[k])]
nuc.append(at_num)
rep = generate_representation(coords, nuc, max_size=45)
reps.append(rep)
energies.append(energy)
except:
print(ani['molecule'])
print(ani['species'])
print(ani['coordinates'])
print(ani['energy'])
X = np.array(reps)[:5000]
y = np.array(energies)[:5000]
sigma = 2.5
K = get_local_kernels(X, X, [sigma], cut_distance=10.0)[0]
K[np.diag_indices_from(K)] += 1e-8
def test_fchl_local_periodic():
nuclear_charges = [
np.array([
13, 13, 58, 58, 58, 58, 58, 58, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 23, 23
]),
np.array([
34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 34, 73, 73, 73, 73, 81,
81, 81, 81
]),
np.array([48, 8, 8, 8, 8, 8, 8, 51, 51]),
np.array([
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
30, 30
]),
np.array([58, 58, 8, 8, 8, 8, 8, 8, 8, 8, 23, 23])
]
cells = np.array([[[1.01113290e+01, -1.85000000e-04, 0.00000000e+00],
[-5.05582400e+00, 8.75745400e+00, 0.00000000e+00],
[0.00000000e+00, 0.00000000e+00, 6.15100100e+00]],
[[9.672168, 0., 0.], [0., 3.643786, 0.],
[0., 0., 14.961818]],
[[5.28208000e+00, -1.20000000e-05, 1.50000000e-05],
[-2.64105000e+00, 4.57443400e+00, -3.00000000e-05],
[1.40000000e-05, -2.40000000e-05, 4.77522000e+00]],
[[-1.917912, 3.321921, 0.], [3.835824, 0., 0.],
[1.917912, -1.107307, -56.423542]],
[[3.699168, 3.699168, -3.255938],
[3.699168, -3.699168, 3.255938],
[-3.699168, -3.699168, -3.255938]]])
fractional_coordinates = [
[[0.6666706, 0.33333356, 0.15253127],
[0.33332896, 0.66666655, 0.65253119],
[0.14802736, 0.375795, 0.23063888],
[0.62422269, 0.77225019, 0.23063888],
[0.22775607, 0.85196133, 0.23063888],
[0.77224448, 0.14803879, 0.7306388],
[0.37577687, 0.22774993,
0.7306388], [0.8519722, 0.62420512, 0.7306388],
[0.57731818, 0.47954083, 0.0102715],
[0.52043884, 0.09777799, 0.01028288],
[0.90211803, 0.4226259, 0.01032677],
[0.33335216, 0.6666734, 0.01482035],
[0.90959766, 0.77585201, 0.30637615],
[0.86626106, 0.09040873, 0.3063794],
[0.22415808, 0.13374794, 0.30638265],
[0.42268138, 0.52045928, 0.51027142],
[0.47956114, 0.90222098, 0.5102828],
[0.09788153, 0.57737421, 0.51032669],
[0.6666474, 0.33332671, 0.51482027],
[0.09040133, 0.22414696, 0.80637769],
[0.13373793, 0.90959025, 0.80637932],
[0.77584247, 0.86625217, 0.80638257], [0., 0., 0.05471142],
[0., 0., 0.55471134]],
[[0.81615001, 0.75000014, 0.00116296],
[0.52728096, 0.25000096, 0.0993275],
[0.24582596, 0.75000014, 0.2198563],
[0.74582658, 0.75000014, 0.28014376],
[0.02728137, 0.25000096, 0.40067257],
[0.31615042, 0.75000014, 0.49883711],
[0.68384978, 0.25000096, 0.50116236],
[0.97271884, 0.75000014, 0.59932757],
[0.25417362, 0.25000096, 0.71985637],
[0.75417321, 0.25000096, 0.78014383],
[0.47271925, 0.75000014, 0.90067263],
[0.1838502, 0.25000096, 0.99883717],
[0.33804831, 0.75000014, 0.07120258],
[0.83804789, 0.75000014, 0.42879749],
[0.16195232, 0.25000096, 0.57120198],
[0.6619519, 0.25000096, 0.92879756],
[0.98245812, 0.25000096, 0.17113829],
[0.48245853, 0.25000096, 0.32886177],
[0.51754167, 0.75000014, 0.67113836],
[0.01754209, 0.75000014, 0.82886184]],
[[0.00000000e+00, 0.00000000e+00, 0.00000000e+00],
[3.66334233e-01, 1.96300000e-07, 2.70922493e-01],
[6.33665197e-01, 6.33666177e-01, 2.70923540e-01],
[3.62000000e-08, 3.66333081e-01, 2.70923851e-01],
[6.70000000e-09, 6.33664733e-01, 7.29076149e-01],
[6.33664135e-01, 9.99998055e-01, 7.29076460e-01],
[3.66336157e-01, 3.66334260e-01, 7.29077507e-01],
[3.33333635e-01, 6.66667395e-01, 4.99998953e-01],
[6.66667720e-01, 3.33333042e-01, 5.00000000e-01]],
[[0.3379644, 0.66203644, 0.01389048],
[0.02316309, 0.97683587, 0.06948926],
[0.70833843, 0.29165976, 0.12501892],
[0.39352259, 0.60647824, 0.18056506],
[0.74538243, 0.25461577, 0.2361509],
[0.09722803, 0.90277092, 0.2916841],
[0.44907919, 0.55092165,
0.34723485], [0.8009281, 0.1990701, 0.4027879],
[0.15278103, 0.84721793, 0.45834308],
[0.83797345, 0.16202475, 0.51392396],
[0.52315813, 0.4768427, 0.56947169],
[0.20833916, 0.7916598, 0.62501748],
[0.89352691, 0.10647128, 0.68058436],
[0.57870427, 0.42129656, 0.73611012],
[0.93056329, 0.06943491, 0.79169347],
[0.28241704, 0.71758191, 0.84725114],
[0.63426956, 0.36573128, 0.90280596],
[0.98611817, 0.01388002, 0.95835813], [0., 0., 0.],
[0.35185434, 0.64814649, 0.05556032],
[0.03704151, 0.96295744, 0.11112454],
[0.72221887, 0.27777932, 0.16666022],
[0.40741437, 0.59258647, 0.22224039],
[0.75926009, 0.24073811, 0.27778387],
[0.11111195, 0.888887, 0.33333586],
[0.46296234, 0.53703849, 0.38888431],
[0.81480954, 0.18518866, 0.44443222],
[0.16667233, 0.83332662, 0.500017],
[0.85185117, 0.14814703, 0.55555711],
[0.53704217, 0.46295866, 0.61112381],
[0.22222196, 0.777777, 0.66666587],
[0.90740847, 0.09258972, 0.72222903],
[0.59259328, 0.40740756,
0.77777712], [0.94444213, 0.05555607, 0.83333],
[0.29630132, 0.70369764, 0.88890396],
[0.64815247, 0.35184836, 0.94445471]],
[[0., 0., 0.], [0.75000042, 0.50000027, 0.25000015],
[0.15115386, 0.81961403, 0.33154037],
[0.51192691, 0.18038651, 0.3315404],
[0.08154025, 0.31961376, 0.40115401],
[0.66846017, 0.81961403, 0.48807366],
[0.08154025, 0.68038678, 0.76192703],
[0.66846021, 0.18038651, 0.84884672],
[0.23807355, 0.31961376, 0.91846033],
[0.59884657, 0.68038678, 0.91846033], [0.50000031, 0., 0.50000031],
[0.25000015, 0.50000027, 0.75000042]]
]
n = 5
X = np.array([
generate_representation(fractional_coordinates[i],
nuclear_charges[i],
cell=cells[i],
max_size=36,
neighbors=200,
cut_distance=7.0) for i in range(5)
])
sigmas = [2.5]
K = get_local_symmetric_kernels(X, sigmas, cut_distance=7.0, cut_start=0.7)
K_ref = np.array([
[530.03184304, 435.65196293, 198.61245535, 782.49428327, 263.53562172],
[435.65196293, 371.35281119, 163.83766549, 643.99777576, 215.04338938],
[198.61245535, 163.83766549, 76.12134823, 295.02739281, 99.89595704],
[
782.49428327, 643.99777576, 295.02739281, 1199.61736141,
389.31169487
],
[263.53562172, 215.04338938, 99.89595704, 389.31169487, 133.36920188]
])
assert np.allclose(K, K_ref), "Error in periodic FCHL"
def test_krr_fchl_global():
test_dir = os.path.dirname(os.path.realpath(__file__))
# Parse file containing PBE0/def2-TZVP heats of formation and xyz filenames
data = get_energies(test_dir + "/data/hof_qm7.txt")
# Generate a list of qml.Compound() objects"
mols = []
for xyz_file in sorted(data.keys())[:100]:
# Initialize the qml.Compound() objects
mol = qml.Compound(xyz=test_dir + "/qm7/" + xyz_file)
# Associate a property (heat of formation) with the object
mol.properties = data[xyz_file]
# This is a Molecular Coulomb matrix sorted by row norm
mol.representation = generate_representation(mol.coordinates, \
mol.nuclear_charges, cut_distance=1e6)
mols.append(mol)
# Shuffle molecules
np.random.seed(666)
np.random.shuffle(mols)
# Make training and test sets
n_test = len(mols) // 3
n_train = len(mols) - n_test
training = mols[:n_train]
test = mols[-n_test:]
X = np.array([mol.representation for mol in training])
Xs = np.array([mol.representation for mol in test])
# List of properties
Y = np.array([mol.properties for mol in training])
Ys = np.array([mol.properties for mol in test])
# Set hyper-parameters
sigma = 100.0
llambda = 1e-8
K_symmetric = get_global_symmetric_kernels(X, [sigma])[0]
K = get_global_kernels(X, X, [sigma])[0]
assert np.allclose(K,
K_symmetric), "Error in FCHL symmetric global kernels"
assert np.invert(np.all(
np.isnan(K_symmetric))), "FCHL global symmetric kernel contains NaN"
assert np.invert(np.all(np.isnan(K))), "FCHL global kernel contains NaN"
# Solve alpha
K[np.diag_indices_from(K)] += llambda
alpha = cho_solve(K, Y)
# # Calculate prediction kernel
Ks = get_global_kernels(Xs, X, [sigma])[0]
assert np.invert(np.all(
np.isnan(Ks))), "FCHL global testkernel contains NaN"
Yss = np.dot(Ks, alpha)
mae = np.mean(np.abs(Ys - Yss))
assert abs(2 - mae) < 1.0, "Error in FCHL global kernel-ridge regression"
def calculate(charges_mike, coordinates_mike):
global train_representations
global train_displaced_representations
global train_alphas
global NMAX
global CUT_DISTANCE
global KERNEL_ARGS
global DX
print("before")
print("mike charge", charges_mike)
print("mike coord", coordinates_mike)
print("mike lr", len(charges_mike))
print("mike lo", len(coordinates_mike))
#charges = [NUCLEAR_CHARGE[atom] for atom in atoms]
#charges = np.array(charges)
N = len(charges_mike)
coordinates = np.zeros(N*3)
charges = np.zeros(N, dtype=int)
for i, coord in enumerate(coordinates_mike):
coordinates[i] = coord
for i, charge in enumerate(charges_mike):
charges[i] = charge
coordinates = coordinates.reshape((N,3))
print("charges", charges)
print("coord", coordinates)
print("len charge", len(charges))
print("len coord", len(coordinates))
rep = generate_representation(coordinates, charges, max_size=NMAX, cut_distance=CUT_DISTANCE)
disp_rep = generate_displaced_representations(coordinates, charges, max_size=NMAX, cut_distance=CUT_DISTANCE, dx=DX)
list_rep = np.array([rep])
list_disp_rep = np.array([disp_rep])
# generate kernel
kernel_energies, kernel_forces = get_kernel(
train_representations,
list_rep,
train_displaced_representations,
list_disp_rep)
kernel_energies = kernel_energies[0]
kernel_forces = kernel_forces[0]
print("kernel shape", kernel_forces.shape)
# predict
energies = np.dot(kernel_energies.T, train_alphas)
forces = np.dot(kernel_forces.T, train_alphas)
print("after")
print(energies[0], forces)
return energies[0], forces
def main():
read_model("data/butane")
atoms, coordinates = rmsd.get_coordinates_xyz("data/butane/butane-1.xyz")
energy, force = calculate(atoms, coordinates)
print(energy)
print(force)
quit()
description = """
"""
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('-f', '--filename', action='store', help='List of molecules', metavar='listfile')
parser.add_argument('-m', '--model', action='store', help='Output model in npy format', metavar='file')
args = parser.parse_args()
# Load model
PARAMETERS = np.load(args.model + ".parameters.npy")
train_representations = np.load(args.model + ".representations.npy")
train_displaced_representations = np.load(args.model + ".displaced_representations.npy")
train_alphas = np.load(args.model + ".alphas.npy")
# Get molecule filenames
f = open(args.filename, 'r')
molecules = f.readlines()
molecules = [mol.strip() for mol in molecules]
f.close()
DIRECTORY = args.filename.split("/")
DIRECTORY = "/".join(DIRECTORY[:-1]) + "/"
# Init all the rep lists
list_atoms = []
list_charges = []
list_coordinates = []
list_energies = []
list_forces = []
list_rep = []
list_disp_rep = []
list_disp_rep5 = []
# HYPER PARAMETERS
CUT_DISTANCE = PARAMETERS.item().get('cut_distance')
KERNEL_ARGS = PARAMETERS.item().get('kernel_args')
DX = PARAMETERS.item().get('dx')
NMAX = PARAMETERS.item().get('max_atoms')
# read coordinates
for filename in molecules:
atoms, coordinates = rmsd.get_coordinates_xyz(DIRECTORY + filename + ".xyz")
charges = [NUCLEAR_CHARGE[atom] for atom in atoms]
rep = generate_representation(coordinates, charges, max_size=NMAX, cut_distance=CUT_DISTANCE)
disp_rep = generate_displaced_representations(coordinates, charges, max_size=NMAX, cut_distance=CUT_DISTANCE, dx=DX)
list_rep.append(rep)
list_disp_rep.append(disp_rep)
break
list_rep = np.array(list_rep)
list_disp_rep = np.array(list_disp_rep)
# generate kernel
kernel_energies, kernel_forces = get_kernel(
train_representations,
list_rep,
train_displaced_representations,
list_disp_rep,
kernel_args=KERNEL_ARGS,
dx=DX)
kernel_energies = kernel_energies[0]
kernel_forces = kernel_forces[0]
# predict
energies = np.dot(kernel_energies.T, train_alphas)
forces = np.dot(kernel_forces.T, train_alphas)
print(energies)
print(forces)
def main():
description = """
Based on a list of molecules, train a representation-set and alpha set.
Output the npy files
"""
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('-f',
'--filename',
action='store',
help='List of molecules',
metavar='listfile')
parser.add_argument('-d',
'--dump',
action='store',
help='Output model in npy format',
metavar='file')
parser.add_argument('--test', action='store_true')
parser.add_argument('--optimize', action='store_true')
args = parser.parse_args()
# Get molecule filenames
f = open(args.filename, 'r')
molecules = f.readlines()
molecules = [mol.strip() for mol in molecules]
f.close()
DIRECTORY = args.filename.split("/")
DIRECTORY = "/".join(DIRECTORY[:-1]) + "/"
# Init all the rep lists
list_atoms = []
list_charges = []
list_coordinates = []
list_energies = []
list_forces = []
list_rep = []
list_disp_rep = []
list_disp_rep5 = []
# HYPER PARAMETERS
CUT_DISTANCE = 1e6
KERNEL_ARGS = {
"verbose": False,
"cut_distance": CUT_DISTANCE,
"kernel": "gaussian",
"kernel_args": {
"sigma": [0.64],
},
}
DX = 0.005
# read coordinates
for filename in molecules:
atoms, coordinates = rmsd.get_coordinates_xyz(DIRECTORY + filename +
".xyz")
nuclear_charges = [NUCLEAR_CHARGE[atom] for atom in atoms]
f = open(DIRECTORY + filename + ".energy", 'r')
energy = next(f)
energy = float(energy)
force = []
for line in f:
force.append(line.split(","))
force = np.array(force, dtype=float)
list_atoms.append(atoms)
list_charges.append(nuclear_charges)
list_coordinates.append(coordinates)
list_energies.append(energy)
list_forces.append(force)
# Calculate NMAX hyperprameter
NMAX = [len(x) for x in list_atoms]
NMAX = np.max(NMAX)
# Save model parameters
PARAMETERS = {
"kernel_args": KERNEL_ARGS,
"cut_distance": CUT_DISTANCE,
"max_atoms": NMAX,
"dx": DX
}
# Calculate representations
for charges, coordinates in zip(list_charges, list_coordinates):
rep = generate_representation(coordinates,
charges,
max_size=NMAX,
cut_distance=CUT_DISTANCE)
disp_rep = generate_displaced_representations(
coordinates,
charges,
max_size=NMAX,
cut_distance=CUT_DISTANCE,
dx=DX)
list_rep.append(rep)
list_disp_rep.append(disp_rep)
list_atoms = np.array(list_atoms)
list_coordinates = np.array(list_coordinates)
list_energies = np.array(list_energies)
list_forces = np.array(list_forces)
list_rep = np.array(list_rep)
list_disp_rep = np.array(list_disp_rep)
# Hack, easy way to normalize energies (same molecule)
avg = np.sum(list_energies) / len(list_energies)
list_energies -= avg
# hatree / bohr to hatree / aangstroem
list_forces *= 1.0 / 0.529177249
# generate train / test views
view_all = np.array(range(len(molecules)))
# view_train, view_valid = np.split(view_all, 2)
view_train = view_all
# TODO cross-validation of hyper-parameter optimization
# generate kernel
kernel_train_energies, kernel_train_deriv = wrapper.get_kernel(
list_rep[view_train],
list_rep[view_train],
list_disp_rep[view_train],
list_disp_rep[view_train],
dx=DX,
kernel_args=KERNEL_ARGS)
kernel_train_energies = kernel_train_energies[0]
kernel_train_deriv = kernel_train_deriv[0]
# generate alphas
alphas = wrapper.get_alphas(kernel_train_energies, kernel_train_deriv,
list_energies[view_train],
list_forces[view_train])
# dump the model
np.save(args.dump + ".alphas", alphas)
np.save(args.dump + ".representations", list_rep)
np.save(args.dump + ".displaced_representations", list_disp_rep)
np.save(args.dump + ".parameters", PARAMETERS)
# self test
if args.selftest:
energy_valid = np.dot(kernel_train_energies.T, alphas)
force_valid = np.dot(kernel_train_deriv.T, alphas)
print(
mae(list_energies[view_train], energy_valid) < 0.08,
"Error in operator test energy")
print(
mae(list_forces[view_train].flatten(), force_valid) < 0.1,
"Error in operator test force")
return