Papers

Gini 계수를 이용한 Blind Source Recovery 방법의 구현

Domestic Journal
2006~2010
작성자
한혜원
작성일
2008-01-01 00:54
조회
4480
Authors : 정재웅, 송은정, 박영철, 윤대희
Year : 2008
Publisher / Conference : 한국음향학회지
Volume : 27, 제 1호
Page : 26-32
UBSS (under-determined blind source separation)는 BMMR (blind mixing matrix recovery) 과정과 BSR (blind source recovery) 과정으로 구분된다. 일반적으로 이 두 과정은 취득된 데이터의 sparseness를 이용하여 수행되는데, 얼마나 sparseness를 정확히 측정하느냐에 따라 그 성능이 좌우된다. 본 논문에서는 Gini 계수를 이용한 sparseness의 측정 방법을 BSR 과정에 도입하여, $l_1$-노름, $l_q$-노름과 쌍곡탄젠트 (hyperbolic tangent)를 이용하는 측정 방법들과 비교하였으며, 보다 정확한 sparseness 측정과 향상된 BSR 성능을 획득하였다. 이는 컴퓨터 모의 실험을 통하여 검증되었다.
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