FSPA is an optimal quantum spectral projection primitive for qPCA with tight oracle complexity O((log(1/ε)+log(1/|a1|^2))/log(λ1/λ2)) and exponential copy-complexity advantage over classical methods.
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Filtered Spectral Projection for Quantum Principal Component Analysis
FSPA is an optimal quantum spectral projection primitive for qPCA with tight oracle complexity O((log(1/ε)+log(1/|a1|^2))/log(λ1/λ2)) and exponential copy-complexity advantage over classical methods.