Estimating Redundancy Information of Selected Features in Multi-dimensional Pattern Classification
This paper proposes a novel criterion for estimating the redundancy information of selected feature sets in multi-dimensional pattern classification. An appropriate feature selection process typically maximizes the relevancy of features to each class and minimizes the redundancy of features between selected features. Unlike to the relevancy information that can be measured by mutual information, however, it is difficult to estimate the redundancy information because its dynamic range is varied by the characteristics of features and classes.
By utilizing the conceptual diagram of the relationship between candidate features, selected features, and class variables, this paper proposes a new criterion to accurately compute the amount of redundancy. Specifically, the redundancy term is estimated by conditional mutual information between selected and candidate features to each class variable, which does not need a cumbersome normalization process as the conventional algorithm does. The proposed algorithm is implemented into a speech/music discrimination system to evaluate classification performance. Experimental results by varying the number of selected features verify that the proposed method shows higher classification accuracy than conventional algorithms.
|186||International Conference||Se-Woon Jeon, Young-cheol Park, Seok-Pil Lee, Dae Hee Youn "Virtual Source Panning using Multiple-Wise Vector Base in the Multispeaker Stereo Format" in EUSIPCO, pp.1337-1341, 2011|
|185||Domestic Conference||신호선,양재모,강홍구 "GSC 빔포머의 실시간 구현을 위한 고정 소수점 연산화" in 한국음향학회, 2011|
|184||Domestic Conference||신호선, 양재모, 강홍구 "GSC 빔포머의 실시간 구현을 위한 고정 소수점 연산화" in 제 28회 음성통신 및 신호처리 학술대회, vol.28, no.1, 2011|
|183||Domestic Conference||송은우, 강홍구 "Improved Single Channel speech Enhancement Algorithm Using Adaptive Postfiltering" in 한국방송공학회, 2011|
|182||Domestic Conference||이진규, 서현선, 강홍구 "A Single Channel Speech Enhancement for Automatic speech Recognition" in 한국방송공학회, 2011|
|181||Domestic Conference||주영선,정치상,강홍구 "운율 경계 정보를 이용한 HMM 기반의 한국어 음성합성 시스템" in 한국방송공학회, 2011|
|180||International Journal||Jae-seong Lee, Young-Cheol Park, Dae Hee Youn, Kyung-ok Kang "Efficient Windowing Scheme for MDCT-Based TCX in AMR-WB+" in IEICE Transactions on Information and Systems, vol.E94-D, No.6, pp.1341-1344, 2011|
|179||International Journal||Yoomi Hur, Jonathan S. Abel, Young-Cheol Park, Dae Hee Youn "Techniques for Synthetic Reconfiguration of Microphone Arrays" in Journal of the AES, vol.59, issue 6, pp.404-418, 2011|
|178||International Conference||Dong-il Hyun, Jeongil Seo, Young-cheol Park, Dae Hee Youn "Improved phase parameter analysis and synthesis for parametric stereo audio coding" in ICASSP, 2011|
|177||International Conference||Jeongook Song, Hyen-o Oh, Hong-Goo Kong "Enhanced long-term predictor for Unified Speech and Audio Coding" in ICASSP, 2011|