143 lines
7.0 KiB
Plaintext
143 lines
7.0 KiB
Plaintext
---
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title: MultivariateProblem
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description: API reference for qiskit.aqua.components.uncertainty_problems.MultivariateProblem
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in_page_toc_min_heading_level: 1
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python_api_type: class
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python_api_name: qiskit.aqua.components.uncertainty_problems.MultivariateProblem
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---
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# MultivariateProblem
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<Class id="qiskit.aqua.components.uncertainty_problems.MultivariateProblem" isDedicatedPage={true} github="https://github.com/qiskit-community/qiskit-aqua/tree/stable/0.9/qiskit/aqua/components/uncertainty_problems/multivariate_problem.py" signature="MultivariateProblem(uncertainty_model, aggregation_function, univariate_objective, conditions=None)" modifiers="class">
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Bases: `qiskit.aqua.components.uncertainty_problems.uncertainty_problem.UncertaintyProblem`
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Multivariate Uncertainty Problem.
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Constructor.
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**Parameters**
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* **uncertainty\_model** (`MultivariateDistribution`) – multivariate uncertainty model
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* **aggregation\_function** (`CircuitFactory`) – aggregation function that maps the multiple dimension to an aggregated value
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* **univariate\_objective** (`UnivariatePiecewiseLinearObjective`) – objective function applied to the aggregated value
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* **conditions** (`Union`\[`List`\[`Tuple`\[`int`, `CircuitFactory`]], `ndarray`, `None`]) – list of pairs (int, CircuitFactory) = target dimension of uncertainty model and condition to be satisfied to apply the aggregation
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## Methods
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### build
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<Function id="qiskit.aqua.components.uncertainty_problems.MultivariateProblem.build" signature="MultivariateProblem.build(qc, q, q_ancillas=None, params=None)">
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Adds corresponding sub-circuit to given circuit
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**Parameters**
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* **qc** ([*QuantumCircuit*](qiskit.circuit.QuantumCircuit "qiskit.circuit.QuantumCircuit")) – quantum circuit
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* **q** (*list*) – list of qubits (has to be same length as self.\_num\_qubits)
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* **q\_ancillas** (*list*) – list of ancilla qubits (or None if none needed)
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* **params** (*list*) – parameters for circuit
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</Function>
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### build\_controlled
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<Function id="qiskit.aqua.components.uncertainty_problems.MultivariateProblem.build_controlled" signature="MultivariateProblem.build_controlled(qc, q, q_control, q_ancillas=None, use_basis_gates=True)">
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Adds corresponding controlled sub-circuit to given circuit
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**Parameters**
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* **qc** ([*QuantumCircuit*](qiskit.circuit.QuantumCircuit "qiskit.circuit.QuantumCircuit")) – quantum circuit
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* **q** (*list*) – list of qubits (has to be same length as self.\_num\_qubits)
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* **q\_control** ([*Qubit*](qiskit.circuit.Qubit "qiskit.circuit.Qubit")) – control qubit
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* **q\_ancillas** (*list*) – list of ancilla qubits (or None if none needed)
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* **use\_basis\_gates** (*bool*) – use basis gates for expansion of controlled circuit
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</Function>
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### build\_controlled\_inverse
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<Function id="qiskit.aqua.components.uncertainty_problems.MultivariateProblem.build_controlled_inverse" signature="MultivariateProblem.build_controlled_inverse(qc, q, q_control, q_ancillas=None, use_basis_gates=True)">
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Adds controlled inverse of corresponding sub-circuit to given circuit
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**Parameters**
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* **qc** ([*QuantumCircuit*](qiskit.circuit.QuantumCircuit "qiskit.circuit.QuantumCircuit")) – quantum circuit
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* **q** (*list*) – list of qubits (has to be same length as self.\_num\_qubits)
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* **q\_control** ([*Qubit*](qiskit.circuit.Qubit "qiskit.circuit.Qubit")) – control qubit
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* **q\_ancillas** (*list*) – list of ancilla qubits (or None if none needed)
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* **use\_basis\_gates** (*bool*) – use basis gates for expansion of controlled circuit
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</Function>
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### build\_controlled\_inverse\_power
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<Function id="qiskit.aqua.components.uncertainty_problems.MultivariateProblem.build_controlled_inverse_power" signature="MultivariateProblem.build_controlled_inverse_power(qc, q, q_control, power, q_ancillas=None, use_basis_gates=True)">
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Adds controlled, inverse, power of corresponding circuit. May be overridden if a more efficient implementation is possible
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</Function>
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### build\_controlled\_power
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<Function id="qiskit.aqua.components.uncertainty_problems.MultivariateProblem.build_controlled_power" signature="MultivariateProblem.build_controlled_power(qc, q, q_control, power, q_ancillas=None, use_basis_gates=True)">
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Adds controlled power of corresponding circuit. May be overridden if a more efficient implementation is possible
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</Function>
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### build\_inverse
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<Function id="qiskit.aqua.components.uncertainty_problems.MultivariateProblem.build_inverse" signature="MultivariateProblem.build_inverse(qc, q, q_ancillas=None)">
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Adds inverse of corresponding sub-circuit to given circuit
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**Parameters**
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* **qc** ([*QuantumCircuit*](qiskit.circuit.QuantumCircuit "qiskit.circuit.QuantumCircuit")) – quantum circuit
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* **q** (*list*) – list of qubits (has to be same length as self.\_num\_qubits)
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* **q\_ancillas** (*list*) – list of ancilla qubits (or None if none needed)
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</Function>
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### build\_inverse\_power
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<Function id="qiskit.aqua.components.uncertainty_problems.MultivariateProblem.build_inverse_power" signature="MultivariateProblem.build_inverse_power(qc, q, power, q_ancillas=None)">
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Adds inverse power of corresponding circuit. May be overridden if a more efficient implementation is possible
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</Function>
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### build\_power
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<Function id="qiskit.aqua.components.uncertainty_problems.MultivariateProblem.build_power" signature="MultivariateProblem.build_power(qc, q, power, q_ancillas=None)">
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Adds power of corresponding circuit. May be overridden if a more efficient implementation is possible
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</Function>
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### get\_num\_qubits
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<Function id="qiskit.aqua.components.uncertainty_problems.MultivariateProblem.get_num_qubits" signature="MultivariateProblem.get_num_qubits()">
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returns number of qubits
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</Function>
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### get\_num\_qubits\_controlled
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<Function id="qiskit.aqua.components.uncertainty_problems.MultivariateProblem.get_num_qubits_controlled" signature="MultivariateProblem.get_num_qubits_controlled()">
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returns number of qubits controlled
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</Function>
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### required\_ancillas
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<Function id="qiskit.aqua.components.uncertainty_problems.MultivariateProblem.required_ancillas" signature="MultivariateProblem.required_ancillas()">
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returns required ancillas
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</Function>
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### required\_ancillas\_controlled
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<Function id="qiskit.aqua.components.uncertainty_problems.MultivariateProblem.required_ancillas_controlled" signature="MultivariateProblem.required_ancillas_controlled()">
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returns required ancillas controlled
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</Function>
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### value\_to\_estimation
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<Function id="qiskit.aqua.components.uncertainty_problems.MultivariateProblem.value_to_estimation" signature="MultivariateProblem.value_to_estimation(value)">
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value to estimate
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</Function>
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## Attributes
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### num\_target\_qubits
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<Attribute id="qiskit.aqua.components.uncertainty_problems.MultivariateProblem.num_target_qubits">
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Returns the number of target qubits
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</Attribute>
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</Class>
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