---
_id: '11887'
abstract:
- lang: eng
text: We describe an algorithm that performs regularized non-negative matrix factorization
(NMF) to find independent components in non-negative data. Previous techniques
proposed for this purpose require the data to be grounded, with support that goes
down to 0 along each dimension. In our work, this requirement is eliminated. Based
on it, we present a technique to find a low-dimensional decomposition of spectrograms
by casting it as a problem of discovering independent non-negative components
from it. The algorithm itself is implemented as regularized non-negative matrix
factorization (NMF). Unlike other ICA algorithms, this algorithm computes the
mixing matrix rather than an unmixing matrix. This algorithm provides a better
decomposition than standard NMF when the underlying sources are independent. It
makes better use of additional observation streams than previous non-negative
ICA algorithms.
author:
- first_name: Bhiksha
full_name: Raj, Bhiksha
last_name: Raj
- first_name: Kevin W.
full_name: Wilson, Kevin W.
last_name: Wilson
- first_name: Alexander
full_name: Krueger, Alexander
last_name: Krueger
- first_name: Reinhold
full_name: Haeb-Umbach, Reinhold
id: '242'
last_name: Haeb-Umbach
citation:
ama: 'Raj B, Wilson KW, Krueger A, Haeb-Umbach R. Ungrounded Independent Non-Negative
Factor Analysis. In: *Interspeech 2010*. ; 2010.'
apa: Raj, B., Wilson, K. W., Krueger, A., & Haeb-Umbach, R. (2010). Ungrounded
Independent Non-Negative Factor Analysis. In *Interspeech 2010*.
bibtex: '@inproceedings{Raj_Wilson_Krueger_Haeb-Umbach_2010, title={Ungrounded Independent
Non-Negative Factor Analysis}, booktitle={Interspeech 2010}, author={Raj, Bhiksha
and Wilson, Kevin W. and Krueger, Alexander and Haeb-Umbach, Reinhold}, year={2010}
}'
chicago: Raj, Bhiksha, Kevin W. Wilson, Alexander Krueger, and Reinhold Haeb-Umbach.
“Ungrounded Independent Non-Negative Factor Analysis.” In *Interspeech 2010*,
2010.
ieee: B. Raj, K. W. Wilson, A. Krueger, and R. Haeb-Umbach, “Ungrounded Independent
Non-Negative Factor Analysis,” in *Interspeech 2010*, 2010.
mla: Raj, Bhiksha, et al. “Ungrounded Independent Non-Negative Factor Analysis.”
*Interspeech 2010*, 2010.
short: 'B. Raj, K.W. Wilson, A. Krueger, R. Haeb-Umbach, in: Interspeech 2010, 2010.'
date_created: 2019-07-12T05:30:10Z
date_updated: 2022-01-06T06:51:11Z
department:
- _id: '54'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://groups.uni-paderborn.de/nt/pubs/2010/RaWiKrHa10.pdf
oa: '1'
publication: Interspeech 2010
status: public
title: Ungrounded Independent Non-Negative Factor Analysis
type: conference
user_id: '44006'
year: '2010'
...