Phase retrieval

I’ve got the power. / Like the crack of the whip/ I snap attack/ Front to back

January 17, 2017 — November 8, 2019

feature construction
Hilbert space
machine learning
model selection
neural nets
Figure 1

You know the power of the signal; what is the phase? Griffin-Lim algorithm, Wirtinger flow methods based on Wirtinger calculus, Phase-gradient heap integration (Pru and Søndergaard 2016).

Figure 2: Diagram from TiFGAN (Marafioti et al. 2019) via CJ.

TODO: investigate Yue M Lu’s work on phase retrieval as an important example in a large classe of somewhat- analytically-understood nonconvex problems, starting from his recent slide deck on that theme.


Figure 3
Figure 4

1 References

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