Struct Params
Defined in File case_generator.hpp
Struct Documentation
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struct Params
Data container for VQE optimizer problems. Everything is constant, except theta and value which should be updated during iterations.
Public Members
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std::shared_ptr<xacc::CompositeInstruction> ansatz = {}
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std::string circuitString = {}
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std::string pauliString = {}
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std::string acceleratorName = {"qpp"}
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std::string algorithm = {"cobyla"}
algorithm : sets the classical optimisation algorithm, e.g “nelder-mead”, “cobyla”, “l-bfgs”
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std::string extraOptions = {}
extraOptions : YAML format for options to use with the classical optimiser
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double tolerance = {1E-6}
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double optimalValue = {}
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std::vector<double> energies = {}
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std::vector<double> theta = {}
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std::vector<vqe_iteration_data> iterationData = {}
iterationData : a structure for per-iteration energy and theta
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int nQubits = {1}
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int nShots = {1}
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int maxIters = {50}
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int nWorker = {1}
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int nThreadsPerWorker = {1}
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bool isDeterministic = {true}
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bool partitioned = {false}
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bool enableVis = {false}
enableVis : when set to true, the vis member will be filled with ASCII bar graphs. These provide a visual cue of the VQE convergence from a text-only interface.
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bool showTheta = {false}
showTheta : when set to true, selected elements of theta are added to the visualisation
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size_t limitThetaN = {0}
limitThetaN : limit to this number of elements of theta to visualise. 0 => no limit
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size_t tail = {0}
tail : visualise the last n=tail iterations only
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bool plain = {false}
plain : when set to true, no colour codes are output in vis
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bool blocked = {false}
blocked : when set to true, all elements in any given iteration are visualised in a single block.
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std::string vis = {}
vis : a visualisation of energy and each element of theta, at selected iterations of VQE.
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std::shared_ptr<xacc::CompositeInstruction> ansatz = {}