A general difficulty of using singular value decomposition (SVD) to split signal and noise subspaces is in the right choice of effective rank.

用奇异值分解界定信号和噪声子空间的困难之处，在于有效秩的确定。

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Early versions split the signal into eight wavelengths of different colors of light.

FORBES: Hooked on Photonics

Weinberger tackled those problems by designing his chip from scratch, finding ways to split out parts of laborious signal-processing tasks and handle them in parallel.

FORBES: Bridging The Gaps

Marcelo Salomon, an economist with Barclays Capital in New York, said he expects the BCB to send a strong hawkish signal (possibly a split decision) on Wednesday, but will keep rates unchanged at 7.25%.

FORBES: For Bond Investors, Sentiment Shifting On Brazil Rates