def test_marginal_counts_no_cregs(self):
"""Test that marginal_counts without cregs See qiskit-terra/6430."""
raw_counts_1 = {
"0x0": 4,
"0x1": 7,
"0x2": 10,
"0x6": 5,
"0x9": 11,
"0xD": 9,
"0x12": 8
}
data_1 = models.ExperimentResultData(counts=dict(**raw_counts_1))
exp_result_header_1 = QobjExperimentHeader(memory_slots=5)
exp_result_1 = models.ExperimentResult(shots=54,
success=True,
data=data_1,
header=exp_result_header_1)
result = Result(results=[exp_result_1], **self.base_result_args)
_ = marginal_counts(result, indices=[0])
marginal_counts_result = marginal_counts(result, indices=[0])
self.assertEqual(marginal_counts_result.get_counts(), {
"0": 27,
"1": 27
})
def test_marginal_counts(self):
"""Test that counts are marginalized correctly."""
raw_counts = {
"0x0": 4,
"0x1": 7,
"0x2": 10,
"0x6": 5,
"0x9": 11,
"0xD": 9,
"0xE": 8
}
data = models.ExperimentResultData(counts=dict(**raw_counts))
exp_result_header = QobjExperimentHeader(creg_sizes=[["c0", 4]],
memory_slots=4)
exp_result = models.ExperimentResult(shots=54,
success=True,
data=data,
header=exp_result_header)
result = Result(results=[exp_result], **self.base_result_args)
expected_marginal_counts = {"00": 4, "01": 27, "10": 23}
self.assertEqual(marginal_counts(result.get_counts(), [0, 1]),
expected_marginal_counts)
self.assertEqual(marginal_counts(result.get_counts(), [1, 0]),
expected_marginal_counts)
def test_marginal_counts(self):
"""Test that counts are marginalized correctly."""
raw_counts = {
'0x0': 4,
'0x1': 7,
'0x2': 10,
'0x6': 5,
'0x9': 11,
'0xD': 9,
'0xE': 8
}
data = models.ExperimentResultData(counts=dict(**raw_counts))
exp_result_header = QobjExperimentHeader(creg_sizes=[['c0', 4]],
memory_slots=4)
exp_result = models.ExperimentResult(shots=54,
success=True,
data=data,
header=exp_result_header)
result = Result(results=[exp_result], **self.base_result_args)
expected_marginal_counts = {'00': 4, '01': 27, '10': 23}
self.assertEqual(marginal_counts(result.get_counts(), [0, 1]),
expected_marginal_counts)
self.assertEqual(marginal_counts(result.get_counts(), [1, 0]),
expected_marginal_counts)
def test_marginal_counts_with_dict(self):
"""Test the marginal_counts method with dictionary instead of Result object.
"""
dict_counts_1 = {
'0000': 4,
'0001': 7,
'0010': 10,
'0110': 5,
'1001': 11,
'1101': 9,
'1110': 8
}
dict_counts_2 = {'10': 5, '11': 8}
expected_marginal_counts_1 = {'00': 4, '01': 27, '10': 23}
expected_marginal_counts_2 = {'0': 5, '1': 8}
self.assertEqual(marginal_counts(dict_counts_1, [0, 1]),
expected_marginal_counts_1)
self.assertEqual(marginal_counts(dict_counts_2, [0], inplace=True),
expected_marginal_counts_2)
self.assertNotEqual(dict_counts_2, expected_marginal_counts_2)
self.assertRaises(
AttributeError,
lambda: marginal_counts(dict_counts_1, [0, 1]).get_counts(0))
def test_marginal_counts_result(self):
"""Test that a Result object containing counts marginalizes correctly."""
raw_counts_1 = {
"0x0": 4,
"0x1": 7,
"0x2": 10,
"0x6": 5,
"0x9": 11,
"0xD": 9,
"0xE": 8
}
data_1 = models.ExperimentResultData(counts=raw_counts_1)
exp_result_header_1 = QobjExperimentHeader(creg_sizes=[["c0", 4]],
memory_slots=4)
exp_result_1 = models.ExperimentResult(shots=54,
success=True,
data=data_1,
header=exp_result_header_1)
raw_counts_2 = {"0x2": 5, "0x3": 8}
data_2 = models.ExperimentResultData(counts=raw_counts_2)
exp_result_header_2 = QobjExperimentHeader(creg_sizes=[["c0", 2]],
memory_slots=2)
exp_result_2 = models.ExperimentResult(shots=13,
success=True,
data=data_2,
header=exp_result_header_2)
result = Result(results=[exp_result_1, exp_result_2],
**self.base_result_args)
expected_marginal_counts_1 = {"00": 4, "01": 27, "10": 23}
expected_marginal_counts_2 = {"0": 5, "1": 8}
expected_marginal_counts_none = {
"0000": 4,
"0001": 7,
"0010": 10,
"0110": 5,
"1001": 11,
"1101": 9,
"1110": 8,
}
self.assertEqual(
marginal_counts(result, [0, 1]).get_counts(0),
expected_marginal_counts_1)
self.assertEqual(
marginal_counts(result, [0]).get_counts(1),
expected_marginal_counts_2)
self.assertEqual(
marginal_counts(result, None).get_counts(0),
expected_marginal_counts_none)
def test_marginal_counts_result_creg_sizes(self):
"""Test that marginal_counts with Result input properly changes creg_sizes."""
raw_counts = {
"0x0": 4,
"0x1": 7,
"0x2": 10,
"0x6": 5,
"0x9": 11,
"0xD": 9,
"0xE": 8
}
data = models.ExperimentResultData(counts=dict(**raw_counts))
exp_result_header = QobjExperimentHeader(creg_sizes=[["c0", 1],
["c1", 3]],
memory_slots=4)
exp_result = models.ExperimentResult(shots=54,
success=True,
data=data,
header=exp_result_header)
result = Result(results=[exp_result], **self.base_result_args)
expected_marginal_counts = {"0 0": 14, "0 1": 18, "1 0": 13, "1 1": 9}
expected_creg_sizes = [["c0", 1], ["c1", 1]]
expected_memory_slots = 2
marginal_counts_result = marginal_counts(result, [0, 2])
self.assertEqual(marginal_counts_result.results[0].header.creg_sizes,
expected_creg_sizes)
self.assertEqual(marginal_counts_result.results[0].header.memory_slots,
expected_memory_slots)
self.assertEqual(marginal_counts_result.get_counts(0),
expected_marginal_counts)
def test_marginal_counts_result_format(self):
"""Test that marginal_counts with format_marginal true properly formats output."""
raw_counts_1 = {
"0x0": 4,
"0x1": 7,
"0x2": 10,
"0x6": 5,
"0x9": 11,
"0xD": 9,
"0x12": 8
}
data_1 = models.ExperimentResultData(counts=dict(**raw_counts_1))
exp_result_header_1 = QobjExperimentHeader(creg_sizes=[["c0", 2],
["c1", 3]],
memory_slots=5)
exp_result_1 = models.ExperimentResult(shots=54,
success=True,
data=data_1,
header=exp_result_header_1)
result = Result(results=[exp_result_1], **self.base_result_args)
expected_marginal_counts_1 = {
"0_0 _0": 14,
"0_0 _1": 18,
"0_1 _0": 5,
"0_1 _1": 9,
"1_0 _0": 8,
}
marginal_counts_result = marginal_counts(result.get_counts(),
[0, 2, 4],
format_marginal=True)
self.assertEqual(marginal_counts_result, expected_marginal_counts_1)
def _component_data(self, composite_data: List[Dict]) -> List[List[Dict]]:
"""Return marginalized data for component experiments"""
# Marginalize data
marginalized_data = {}
for datum in composite_data:
metadata = datum.get("metadata", {})
# Add marginalized data to sub experiments
if "composite_clbits" in metadata:
composite_clbits = metadata["composite_clbits"]
else:
composite_clbits = None
for i, index in enumerate(metadata["composite_index"]):
if index not in marginalized_data:
# Initialize data list for marginalized
marginalized_data[index] = []
sub_data = {"metadata": metadata["composite_metadata"][i]}
if "counts" in datum:
if composite_clbits is not None:
sub_data["counts"] = marginal_counts(
datum["counts"], composite_clbits[i])
else:
sub_data["counts"] = datum["counts"]
if "memory" in datum:
if composite_clbits is not None:
sub_data["memory"] = (np.array(
datum["memory"])[composite_clbits[i]]).tolist()
else:
sub_data["memory"] = datum["memory"]
marginalized_data[index].append(sub_data)
# Sort by index
return [marginalized_data[i] for i in sorted(marginalized_data.keys())]
def format_result(data_index, chunk):
"""Create new result object from partial result and marginalize."""
new_result = deepcopy(result)
new_result.results = []
new_result.results.extend(result.results[data_index:data_index +
chunk])
return marginal_counts(new_result, __reserved_registers)
def test_marginal_counts_result_memory_indices_None(self):
"""Test that a Result object containing memory marginalizes correctly."""
result = self.generate_qiskit_result()
memory = "should not be touched"
result.results[0].data.memory = memory
marginal_result = marginal_counts(result, indices=None)
marginal_memory = marginal_result.results[0].data.memory
self.assertEqual(marginal_memory, memory)
def test_marginal_counts_result_inplace(self):
"""Test that a Result object containing memory marginalizes correctly inplace."""
result = self.generate_qiskit_result()
marginal_result = marginal_counts(result, indices=[0], inplace=True)
self.assertEqual(id(result), id(marginal_result))
marginal_memory = marginal_result.results[0].data.memory
self.assertEqual(marginal_memory, [hex(ii % 2) for ii in range(8)])
def test_marginal_counts_result_memory_nonzero_indices(self):
"""Test that a Result object containing memory marginalizes correctly."""
result = self.generate_qiskit_result()
index = 2
marginal_result = marginal_counts(result, indices=[index])
marginal_memory = marginal_result.results[0].data.memory
mask = 1 << index
expected = [hex((ii & mask) >> index) for ii in range(8)]
self.assertEqual(marginal_memory, expected)
def marginalizeCounts(counts, qubits):
'''
Input: List of buckets each of which holds multiple dicts denoting the counts
Output: All those dicts marginalized...i.e. holding 2 qubit keys instead of 7 qubit ones
'''
qubits = [i for i in range(qubits)]
for i in range(len(counts)):
for j in range(len(counts[i])):
counts[i][j] = result.marginal_counts(counts[i][j], qubits)
return counts
def test_marginal_counts_result(self):
"""Test that a Result object containing counts marginalizes correctly."""
raw_counts_1 = {
'0x0': 4,
'0x1': 7,
'0x2': 10,
'0x6': 5,
'0x9': 11,
'0xD': 9,
'0xE': 8
}
data_1 = models.ExperimentResultData(counts=dict(**raw_counts_1))
exp_result_header_1 = QobjExperimentHeader(creg_sizes=[['c0', 4]],
memory_slots=4)
exp_result_1 = models.ExperimentResult(shots=54,
success=True,
data=data_1,
header=exp_result_header_1)
raw_counts_2 = {'0x2': 5, '0x3': 8}
data_2 = models.ExperimentResultData(counts=dict(**raw_counts_2))
exp_result_header_2 = QobjExperimentHeader(creg_sizes=[['c0', 2]],
memory_slots=2)
exp_result_2 = models.ExperimentResult(shots=13,
success=True,
data=data_2,
header=exp_result_header_2)
result = Result(results=[exp_result_1, exp_result_2],
**self.base_result_args)
expected_marginal_counts_1 = {'00': 4, '01': 27, '10': 23}
expected_marginal_counts_2 = {'0': 5, '1': 8}
self.assertEqual(
marginal_counts(result, [0, 1]).get_counts(0),
expected_marginal_counts_1)
self.assertEqual(
marginal_counts(result, [0]).get_counts(1),
expected_marginal_counts_2)
def test_marginal_counts_with_dict(self):
"""Test the marginal_counts method with dictionary instead of Result object."""
dict_counts_1 = {
"0000": 4,
"0001": 7,
"0010": 10,
"0110": 5,
"1001": 11,
"1101": 9,
"1110": 8,
}
dict_counts_2 = {"10": 5, "11": 8}
expected_marginal_counts_1 = {"00": 4, "01": 27, "10": 23}
expected_marginal_counts_2 = {"0": 5, "1": 8}
self.assertEqual(marginal_counts(dict_counts_1, [0, 1]),
expected_marginal_counts_1)
self.assertEqual(marginal_counts(dict_counts_2, [0], inplace=True),
expected_marginal_counts_2)
self.assertNotEqual(dict_counts_2, expected_marginal_counts_2)
self.assertRaises(
AttributeError,
lambda: marginal_counts(dict_counts_1, [0, 1]).get_counts(0))
def test_marginal_counts_result_format(self):
"""Test that marginal_counts with format_marginal true properly formats output."""
raw_counts_1 = {'0x0': 4, '0x1': 7, '0x2': 10, '0x6': 5, '0x9': 11, '0xD': 9, '0x12': 8}
data_1 = models.ExperimentResultData(counts=dict(**raw_counts_1))
exp_result_header_1 = QobjExperimentHeader(creg_sizes=[['c0', 2], ['c1', 3]],
memory_slots=5)
exp_result_1 = models.ExperimentResult(shots=54, success=True, data=data_1,
header=exp_result_header_1)
result = Result(results=[exp_result_1], **self.base_result_args)
expected_marginal_counts_1 = {'0_0 _0': 14, '0_0 _1': 18,
'0_1 _0': 5, '0_1 _1': 9, '1_0 _0': 8}
marginal_counts_result = marginal_counts(result.get_counts(), [0, 2, 4],
format_marginal=True)
self.assertEqual(marginal_counts_result, expected_marginal_counts_1)
def _fitter_data(
data: List[Dict[str, any]]
) -> Tuple[np.ndarray, np.ndarray, np.ndarray, List[np.ndarray]]:
"""Return list a tuple of basis, frequency, shot data"""
outcome_dict = {}
meas_size = None
prep_size = None
for datum in data:
# Get basis data
metadata = datum["metadata"]
meas_element = tuple(metadata["m_idx"])
prep_element = tuple(
metadata["p_idx"]) if "p_idx" in metadata else tuple()
if meas_size is None:
meas_size = len(meas_element)
if prep_size is None:
prep_size = len(prep_element)
# Add outcomes
counts = Counts(
marginal_counts(datum["counts"],
metadata["clbits"])).int_outcomes()
basis_key = (meas_element, prep_element)
if basis_key in outcome_dict:
TomographyAnalysis._append_counts(outcome_dict[basis_key],
counts)
else:
outcome_dict[basis_key] = counts
num_basis = len(outcome_dict)
measurement_data = np.zeros((num_basis, meas_size), dtype=int)
preparation_data = np.zeros((num_basis, prep_size), dtype=int)
shot_data = np.zeros(num_basis, dtype=int)
outcome_data = []
for i, (basis_key, counts) in enumerate(outcome_dict.items()):
measurement_data[i] = basis_key[0]
preparation_data[i] = basis_key[1]
outcome_arr = np.zeros((len(counts), 2), dtype=int)
for j, (outcome, freq) in enumerate(counts.items()):
outcome_arr[j] = [outcome, freq]
shot_data[i] += freq
outcome_data.append(outcome_arr)
return outcome_data, shot_data, measurement_data, preparation_data
def _generate_matrices(self, data) -> List[np.array]:
num_qubits = len(data[0]["metadata"]["label"])
counts = [None, None]
for result in data:
for i in range(2):
if result["metadata"]["label"] == str(i) * num_qubits:
counts[i] = result["counts"]
matrices = []
for k in range(num_qubits):
matrix = np.zeros([2, 2], dtype=float)
marginalized_counts = []
for i in range(2):
marginalized_counts.append(marginal_counts(counts[i], [k]))
# matrix[i][j] is the probability of counting i for expected j
for i in range(2):
for j in range(2):
matrix[i][j] = marginalized_counts[j][str(i)] / sum(
marginalized_counts[j].values())
matrices.append(matrix)
return matrices
def test_marginal_counts_result_creg_sizes(self):
"""Test that marginal_counts with Result input properly changes creg_sizes."""
raw_counts = {'0x0': 4, '0x1': 7, '0x2': 10, '0x6': 5, '0x9': 11, '0xD': 9, '0xE': 8}
data = models.ExperimentResultData(counts=dict(**raw_counts))
exp_result_header = QobjExperimentHeader(creg_sizes=[['c0', 1], ['c1', 3]],
memory_slots=4)
exp_result = models.ExperimentResult(shots=54, success=True, data=data,
header=exp_result_header)
result = Result(results=[exp_result], **self.base_result_args)
expected_marginal_counts = {'0 0': 14, '0 1': 18, '1 0': 13, '1 1': 9}
expected_creg_sizes = [['c0', 1], ['c1', 1]]
expected_memory_slots = 2
marginal_counts_result = marginal_counts(result, [0, 2])
self.assertEqual(marginal_counts_result.results[0].header.creg_sizes,
expected_creg_sizes)
self.assertEqual(marginal_counts_result.results[0].header.memory_slots,
expected_memory_slots)
self.assertEqual(marginal_counts_result.get_counts(0),
expected_marginal_counts)
def _add_single_data(self, data):
"""Add data to the experiment"""
# TODO: Handle optional marginalizing IQ data
metadata = data.get("metadata", {})
if metadata.get("experiment_type") == self._experiment._type:
# Add parallel data
self._data.append(data)
# Add marginalized data to sub experiments
if "composite_clbits" in metadata:
composite_clbits = metadata["composite_clbits"]
else:
composite_clbits = None
for i, index in enumerate(metadata["composite_index"]):
sub_data = {"metadata": metadata["composite_metadata"][i]}
if "counts" in data:
if composite_clbits is not None:
sub_data["counts"] = marginal_counts(data["counts"], composite_clbits[i])
else:
sub_data["counts"] = data["counts"]
self._composite_expdata[index].add_data(sub_data)
def test_marginal_counts_inplace_false(self):
"""Test marginal_counts(Result, inplace=False) """
raw_counts_1 = {'0x0': 4, '0x1': 7, '0x2': 10, '0x6': 5, '0x9': 11, '0xD': 9, '0xE': 8}
data_1 = models.ExperimentResultData(counts=dict(**raw_counts_1))
exp_result_header_1 = QobjExperimentHeader(creg_sizes=[['c0', 4]], memory_slots=4)
exp_result_1 = models.ExperimentResult(shots=54, success=True, data=data_1,
header=exp_result_header_1)
raw_counts_2 = {'0x2': 5, '0x3': 8}
data_2 = models.ExperimentResultData(counts=dict(**raw_counts_2))
exp_result_header_2 = QobjExperimentHeader(creg_sizes=[['c0', 2]], memory_slots=2)
exp_result_2 = models.ExperimentResult(shots=13, success=True, data=data_2,
header=exp_result_header_2)
result = Result(results=[exp_result_1, exp_result_2], **self.base_result_args)
expected_marginal_counts = {'0': 27, '1': 27}
self.assertEqual(marginal_counts(result, [0], inplace=False).get_counts(0),
expected_marginal_counts)
self.assertNotEqual(result.get_counts(0),
expected_marginal_counts)
def test_marginal_counts_inplace_false(self):
"""Test marginal_counts(Result, inplace=False)"""
raw_counts_1 = {
"0x0": 4,
"0x1": 7,
"0x2": 10,
"0x6": 5,
"0x9": 11,
"0xD": 9,
"0xE": 8
}
data_1 = models.ExperimentResultData(counts=dict(**raw_counts_1))
exp_result_header_1 = QobjExperimentHeader(creg_sizes=[["c0", 4]],
memory_slots=4)
exp_result_1 = models.ExperimentResult(shots=54,
success=True,
data=data_1,
header=exp_result_header_1)
raw_counts_2 = {"0x2": 5, "0x3": 8}
data_2 = models.ExperimentResultData(counts=dict(**raw_counts_2))
exp_result_header_2 = QobjExperimentHeader(creg_sizes=[["c0", 2]],
memory_slots=2)
exp_result_2 = models.ExperimentResult(shots=13,
success=True,
data=data_2,
header=exp_result_header_2)
result = Result(results=[exp_result_1, exp_result_2],
**self.base_result_args)
expected_marginal_counts = {"0": 27, "1": 27}
self.assertEqual(
marginal_counts(result, [0], inplace=False).get_counts(0),
expected_marginal_counts)
self.assertNotEqual(result.get_counts(0), expected_marginal_counts)
def test_marginal_counts_result_marginalize_memory(self):
"""Test that a Result object containing memory marginalizes correctly inplace."""
result = self.generate_qiskit_result()
marginal_result = marginal_counts(result,
indices=[0],
inplace=True,
marginalize_memory=False)
self.assertFalse(hasattr(marginal_result.results[0].data, "memory"))
result = self.generate_qiskit_result()
marginal_result = marginal_counts(result,
indices=[0],
inplace=True,
marginalize_memory=None)
self.assertTrue(hasattr(marginal_result.results[0].data, "memory"))
result = self.generate_qiskit_result()
marginal_result = marginal_counts(result,
indices=[0],
inplace=True,
marginalize_memory=True)
self.assertTrue(hasattr(marginal_result.results[0].data, "memory"))
result = self.generate_qiskit_result()
marginal_result = marginal_counts(result,
indices=[0],
inplace=False,
marginalize_memory=False)
self.assertFalse(hasattr(marginal_result.results[0].data, "memory"))
marginal_result = marginal_counts(result,
indices=[0],
inplace=False,
marginalize_memory=None)
self.assertTrue(hasattr(marginal_result.results[0].data, "memory"))
marginal_result = marginal_counts(result,
indices=[0],
inplace=False,
marginalize_memory=True)
self.assertTrue(hasattr(marginal_result.results[0].data, "memory"))
def _fitter_data(
data: List[Dict[str, any]],
measurement_basis: Optional[MeasurementBasis] = None,
measurement_qubits: Optional[Tuple[int, ...]] = None,
) -> Tuple[np.ndarray, np.ndarray, np.ndarray, np.ndarray]:
"""Return list a tuple of basis, frequency, shot data"""
meas_size = None
prep_size = None
# Construct marginalized tomography count dicts
outcome_dict = {}
shots_dict = {}
for datum in data:
# Get basis data
metadata = datum["metadata"]
meas_element = tuple(
metadata["m_idx"]) if "m_idx" in metadata else tuple()
prep_element = tuple(
metadata["p_idx"]) if "p_idx" in metadata else tuple()
if meas_size is None:
meas_size = len(meas_element)
if prep_size is None:
prep_size = len(prep_element)
# Add outcomes
counts = Counts(
marginal_counts(datum["counts"], metadata["clbits"]))
shots = datum.get("shots", sum(counts.values()))
basis_key = (meas_element, prep_element)
if basis_key in outcome_dict:
TomographyAnalysis._append_counts(outcome_dict[basis_key],
counts)
shots_dict[basis_key] += shots
else:
outcome_dict[basis_key] = counts
shots_dict[basis_key] = shots
# Construct function for converting count outcome dit-strings into
# integers based on the specified number of outcomes of the measurement
# bases on each qubit
if meas_size == 0:
# Trivial case with no measurement
num_outcomes = 1
outcome_func = lambda _: 1
elif measurement_basis is None:
# If no basis is provided assume N-qubit measurement case
num_outcomes = 2**meas_size
outcome_func = lambda outcome: int(outcome, 2)
else:
# General measurement basis case for arbitrary outcome measurements
if measurement_qubits is None:
measurement_qubits = tuple(range(meas_size))
elif len(measurement_qubits) != meas_size:
raise AnalysisError(
"Specified number of measurementqubits does not match data."
)
outcome_shape = measurement_basis.outcome_shape(measurement_qubits)
num_outcomes = np.prod(outcome_shape)
outcome_func = _int_outcome_function(outcome_shape)
num_basis = len(outcome_dict)
measurement_data = np.zeros((num_basis, meas_size), dtype=int)
preparation_data = np.zeros((num_basis, prep_size), dtype=int)
shot_data = np.zeros(num_basis, dtype=int)
outcome_data = np.zeros((num_basis, num_outcomes), dtype=int)
for i, (basis_key, counts) in enumerate(outcome_dict.items()):
measurement_data[i] = basis_key[0]
preparation_data[i] = basis_key[1]
shot_data[i] = shots_dict[basis_key]
for outcome, freq in counts.items():
outcome_data[i][outcome_func(outcome)] = freq
return outcome_data, shot_data, measurement_data, preparation_data
def test_marginal_counts_result_invalid_indices(self):
"""Test that a Result object containing memory marginalizes correctly inplace."""
result = self.generate_qiskit_result()
with self.assertRaises(QiskitError):
_ = marginal_counts(result, indices=[0, 1, 100], inplace=True)
def _marginalized_component_data(
self, composite_data: List[Dict]) -> List[List[Dict]]:
"""Return marginalized data for component experiments.
Args:
composite_data: a list of composite experiment circuit data.
Returns:
A List of lists of marginalized circuit data for each component
experiment in the composite experiment.
"""
# Marginalize data
marginalized_data = {}
for datum in composite_data:
metadata = datum.get("metadata", {})
# Add marginalized data to sub experiments
if "composite_clbits" in metadata:
composite_clbits = metadata["composite_clbits"]
else:
composite_clbits = None
# Pre-process the memory if any to avoid redundant calls to format_counts_memory
f_memory = self._format_memory(datum, composite_clbits)
for i, index in enumerate(metadata["composite_index"]):
if index not in marginalized_data:
# Initialize data list for marginalized
marginalized_data[index] = []
sub_data = {"metadata": metadata["composite_metadata"][i]}
if "counts" in datum:
if composite_clbits is not None:
sub_data["counts"] = marginal_counts(
datum["counts"], composite_clbits[i])
else:
sub_data["counts"] = datum["counts"]
if "memory" in datum:
if composite_clbits is not None:
# level 2
if f_memory is not None:
idx = slice(-1 - composite_clbits[i][-1],
-composite_clbits[i][0] or None)
sub_data["memory"] = [
shot[idx] for shot in f_memory
]
# level 1
else:
mem = np.array(datum["memory"])
# Averaged level 1 data
if len(mem.shape) == 2:
sub_data["memory"] = mem[
composite_clbits[i]].tolist()
# Single-shot level 1 data
if len(mem.shape) == 3:
sub_data["memory"] = mem[:, composite_clbits[
i]].tolist()
else:
sub_data["memory"] = datum["memory"]
marginalized_data[index].append(sub_data)
# Sort by index
return [marginalized_data[i] for i in sorted(marginalized_data.keys())]