Provable ICA with Unknown Gaussian Noise, and Implications for Gaussian Mixtures and Autoencoders. Arora, S., Ge, R., Moitra, A., & Sachdeva, S. In NIPS, 2012.
bibtex   
@INPROCEEDINGS{AGMS12,
  AUTHOR = {Sanjeev Arora and Rong Ge and Ankur Moitra and Suchant Sachdeva},
  TITLE = {Provable {ICA} with Unknown {G}aussian Noise, and Implications for {G}aussian Mixtures and Autoencoders},
  BOOKTITLE = {NIPS},
  YEAR = {2012},
}

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