| bibtype |
C -
Conference Paper (international conference)
|
| ARLID |
0447092 |
| utime |
20240103210533.2 |
| mtime |
20150910235959.9 |
| SCOPUS |
84944703922 |
| WOS |
000363785500041 |
| DOI |
10.1007/978-3-319-22482-4_41 |
| title
(primary) (eng) |
Bayesian Blind Source Separation with Unknown Prior Covariance |
| specification |
| page_count |
8 s. |
| media_type |
P |
|
| serial |
| ARLID |
cav_un_epca*0447151 |
| ISBN |
978-3-319-22481-7 |
| ISSN |
0302-9743 |
| title
|
Latent Variable Analysis and Signal Separation |
| page_num |
352-359 |
| publisher |
| place |
Cham |
| name |
Springer |
| year |
2015 |
|
| editor |
|
| editor |
|
| editor |
|
| editor |
|
|
| keyword |
Blind source separation |
| keyword |
Covariance model |
| keyword |
Variational Bayes approximation |
| keyword |
Non-negative matrix factorization |
| author
(primary) |
| ARLID |
cav_un_auth*0267768 |
| name1 |
Tichý |
| name2 |
Ondřej |
| full_dept (cz) |
Adaptivní systémy |
| full_dept (eng) |
Department of Adaptive Systems |
| department (cz) |
AS |
| department (eng) |
AS |
| institution |
UTIA-B |
| full_dept |
Department of Adaptive Systems |
| fullinstit |
Ústav teorie informace a automatizace AV ČR, v. v. i. |
|
| author
|
| ARLID |
cav_un_auth*0101207 |
| name1 |
Šmídl |
| name2 |
Václav |
| full_dept (cz) |
Adaptivní systémy |
| full_dept |
Department of Adaptive Systems |
| department (cz) |
AS |
| department |
AS |
| institution |
UTIA-B |
| full_dept |
Department of Adaptive Systems |
| fullinstit |
Ústav teorie informace a automatizace AV ČR, v. v. i. |
|
| source |
|
| cas_special |
| project |
| project_id |
GA13-29225S |
| agency |
GA ČR |
| ARLID |
cav_un_auth*0292734 |
|
| abstract
(eng) |
The task of blind source separation (BSS) is to recover original signal sources which are observed only via their superposition with unknown weights. Since we are interested in estimation of the number of relevant sources in noisy observation, we use the Bayesian formulation which automatically removes spurious sources. A tool for this behavior is joint estimation of the unknown prior covariance matrix of the sources in tandem with the sources. In this work, we study the effect of various choices of the covariance matrix structure. Specifically, we compare models using the automatic relevance determination (ARD) principle on the first and the second diagonal, as well as full covariance matrix with Wishart prior. We obtain five versions of the variational BSS algorithm. These are tested on synthetic data and on a selected dataset from dynamic renal scintigraphy. MATLAB implementation of the methods is available for download. |
| action |
| ARLID |
cav_un_auth*0319340 |
| name |
12th International Conference on Latent Variable Analysis and Signal Separation |
| place |
Liberec |
| dates |
25.08.2015-28.08.2015 |
| country |
CZ |
|
| reportyear |
2016 |
| RIV |
BB |
| num_of_auth |
2 |
| presentation_type |
PO |
| inst_support |
RVO:67985556 |
| permalink |
http://hdl.handle.net/11104/0249081 |
| confidential |
S |
| mrcbT16-s |
0.329 |
| mrcbT16-4 |
Q2 |
| mrcbT16-E |
Q2 |
| arlyear |
2015 |
| mrcbU14 |
84944703922 SCOPUS |
| mrcbU34 |
000363785500041 WOS |
| mrcbU63 |
cav_un_epca*0447151 Latent Variable Analysis and Signal Separation 978-3-319-22481-7 0302-9743 352 359 Cham Springer 2015 Lecture Notes in Computer Science 9237 |
| mrcbU67 |
Vincent E. 340 |
| mrcbU67 |
Yeredor A. 340 |
| mrcbU67 |
Koldovský Z. 340 |
| mrcbU67 |
Tichavský P. 340 |
|