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https://github.com/eclipse/xacc/issues/509Thien Nguyen authored
- Gradient strategies to filter out non-observing circuits associated with identity term. - For two-sided gradients (central and parameter shift), the identity term has no effect. For single-sided ones (forward and backward), add the identity coefficient in the shifted enery value. - Fixed an oversight in setting optional 'step' param. It was only set in the ctor, but not reset during initialization. Hence, it may carry the value set by a previous run. - Added a set of unit test cases covering 'shots' mode Signed-off-by: Thien Nguyen <thien.md.nguyen@gmail.com>
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