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qiskit.result.marginal_counts

marginal_counts(result, indices=None, inplace=False)[source]

Marginalize counts from an experiment over some indices of interest.

Parameters
  • result (dict or Result) – result to be marginalized (a Result object or a dict of counts).

  • indices (list(int) or None) – The bit positions of interest to marginalize over. If None (default), do not marginalize at all.

  • inplace (bool) – Default: False. Operates on the original Result argument if True, leading to loss of original Job Result. It has no effect if result is a dict.

Returns

a dictionary with the observed counts, marginalized to only account for frequency of observations of bits of interest.

Return type

Result or dict[str, int]

Raises

QiskitError – in case of invalid indices to marginalize over.

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