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- W2922210559 abstract "Principal component analysis is an important dimension reduction technique in machine learning. In [S. Lloyd, M. Mohseni and P. Rebentrost, Nature Physics 10, 631-633, (2014)], a quantum algorithm to implement principal component analysis on quantum computer was obtained by computing the Hamiltonian simulation of unknown density operators. The complexity is $O((log d)t^2/epsilon)$, where $d$ is the dimension, $t$ is the evolution time and $epsilon$ is the precision. We improve this result into $O((log d)t^{1+frac{1}{k}}/epsilon^{frac{1}{k}})$ for arbitrary constant integer $kgeq 1$. As a result, we show that the Hamiltonian simulation of low-rank dense Hermitian matrices can be implemented in the same time." @default.
- W2922210559 created "2019-03-22" @default.
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- W2922210559 date "2019-03-10" @default.
- W2922210559 modified "2023-09-27" @default.
- W2922210559 title "An Improved Algorithm for Quantum Principal Component Analysis." @default.
- W2922210559 hasPublicationYear "2019" @default.
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