Báo cáo hóa học: "Research Article A Dependent Multilabel Classification Method Derived from the k-Nearest Neighbor Rule" ppt
... methods that transform a multilabel classification problem into binary classification problems (a binary classifier for each class or pairwise classifiers) [1, 9] or into multi-class classification problem ... label ranking. This metric measures the average fraction of labels 14 EURASIP Journal on Advances in Signal Processing [20] Y. Yang, “An evaluation of statistical approaches to...
Ngày tải lên: 21/06/2014, 05:20
... Fixed Point Theory and Its Application, Yokohama, Yokohama, Japan, 2000. 2 L C. Ceng and J C. Yao, “Relaxed viscosity approximation methods for fixed point problems and variational inequality problems,” ... nonlinear mappings in Hilbert space,” Journal of Mathematical Analysis and Applications, vol. 20, pp. 197–228, 1967. 8 F. Liu and M. Z. Nashed, “Regularization of nonlinear Ill-posed va...
Ngày tải lên: 21/06/2014, 20:20
... quantitative performance analysis since it is a mathematically derived approach. Beamforming uses spatially sampled data from an array of two or more sensors to estimate arrival angles and waveforms ... beamforming methods (taken and adapted from traditional array processing for applications such as radar and sonar) have been developed for and applied to speech and other acoustic sign...
Ngày tải lên: 21/06/2014, 20:20
báo cáo hóa học:" Research Article A New Angle-Based Location Method Using a Forward-Link Signal" pot
... standard for low rate WPAN [14]. It is also assumed that angle measurements are obtained using IR-UWB system with linear array antennas for RLAOA. For FLAOA, an “L” shape planar array antenna is ... suggested. 2. FLAOA Positioning for Mobile Vehicles 2.1. FLAOA Measurement Model. AOA location systems measure the incident angle at an array antenna. Assuming that two antennas are horizontally...
Ngày tải lên: 21/06/2014, 20:20
Báo cáo hóa học: " Research Article A Sharing-Based Fragile Watermarking Method for Authentication and Self-Recovery of Image Tampering" potx
... image are changed. However, the separation of the authentication data from the images may increase management overhead for transmission and storage. Additionally, the digital signature usually does ... extracted watermark can reflect this simple fact (that the already watermarked image (or image area) has been altered further) [2]. Hence, a watermark for authentication is classifi...
Ngày tải lên: 21/06/2014, 22:20
Báo cáo hóa học: "Research Article A Real Orthogonal Space-Time Coded UWB Scheme for Wireless Secure Communications" pptx
... following, weproposeaclassofrealorthogonalgroupcodesforUWB signals based on Hadamard transform and rotation matrices, which also admit more general transmit antenna settings. For n = 2 m ,withm an integer, a Hadamard ... antennas for UWB signals dramatically improves the BER performance and analytical bounds match the exact BER at the high SNR region, which testifies the validity of...
Ngày tải lên: 21/06/2014, 22:20
Báo cáo hóa học: "Research Article A Fast LMMSE Channel Estimation Method for OFDM Systems" ppt
... matrix and SNR. However, the conventional LMMSE method cannot track the channel. Once the channel parameters change, the performance of the conventional LMMSE method will degrade due to the parameter ... computational complexity can be reduced significantly, compared with the conventional LMMSE method. Thirdly, the proposed method can track the changes of channel param...
Ngày tải lên: 21/06/2014, 22:20
Báo cáo hóa học: "Research Article A Two-Microphone Noise Reduction System for Cochlear Implant Users with Nearby " ppt
... filter was varied systematically, and an ideal target signal detection algorithm performance was mimicked by allowing the filter adapt only in the absence of the target signal. Delay D3 was set ... ipsilateral to the microphones, and the smallest if the noise arrives from the back. In the anechoic environment, improvements are larger and range from 18 to 54 dB. Adaptation ti...
Ngày tải lên: 22/06/2014, 01:20
Báo cáo hóa học: "Research Article A Diversity Guarantee and SNR Performance for Unitary Limited Feedback MIMO Systems" ppt
... dB as a function of log 2 N in Figure 4. The experimental results show that the approximation in (27) is reasonably accurate even at small values of N and provides a practical characterization ... the approximation in (27) means that the left-hand side and the right-hand side can be contained in a ball of radius > 0. 4.3. Special case of MRT-MRC In the special case of s...
Ngày tải lên: 22/06/2014, 06:20
Báo cáo hóa học: " Research Article A Statistical Multiresolution Approach for Face Recognition Using Structural Hidden Markov Models" pptx
... scores for FERET database using Haar wavelet. ages taken from the AT&T Database. The second database used was the Essex Faces95 database [35], which contains twenty color images each of seventy-two ... t a l . 9 (a) (b) Figure 8: Samples of faces from (a) the AT&T Database of Faces [17] and (b) the Essex Faces95 database [35]. The images contain variation in pose,...
Ngày tải lên: 22/06/2014, 06:20