Combining or integrating the outputs of several pattern classifiers has led to improved performance in a multitude of applications. This paper provides an analytical framework to quantify the improvements in classification results due to combining. We show that combining networks linearly in output space reduces the variance of the actual decision region boundaries around the optimum boundary. ...

In this paper, a packet-loss resilient, bandwidth-scalable 3-D graphics streaming system is proposed. It uses the Compressed Progressive Mesh (CPM) algorithm [1] to generate a hierarchical bit-stream to represent different levels of details (LODs). We assign forward error correction (FEC) codes to each layer in the encoded bit-stream according to its importance. To this end, we develop a new di...

When transmitting a sampled signal digitally, data and error correction bits must be transmitted at least as fast as the sampling rate. Typically, each bit is allocated the same transmission time interval, which means the optimal detector yields the same error probability for each bit. An alternative is to vary the bit interval duration according to the bit’s contribution to the reconstructed s...

Procedures controlling error rates measuring at least k false rejections, instead of at least one, can potentially increase the ability of a procedure to detect false null hypotheses in situations where one seeks to control k or more false rejections having tolerated a few of them. The k-FWER, which is the probability of at least k false rejections and generalizes the usual familywise error rat...

We propose the use of intra-palm propagation signals as biometrics. The intra-palm propagation signal is a signal that is propagated in the shallow part of the skin of a palm. In this paper, we prepare dedicated measuring devices and measure intra-palm propagation signals from twenty-one experimental subjects. We also evaluate the verification performance based on Euclidian distance or SVM (sup...

An asynchronous multicarrier (MC) direct-sequence (DS) code-division multiple-access (CDMA) scheme for the uplink of the mobile communication system operating in a frequency selective fading channel is analyzed. Bit error rate performance of the system with either equal-gain combining or maximum-ratio combining is obtained. Numerical results indicate that the system performs better than that of...

-Authentication of identity is rapidly becoming an important issue. Signature verification is a promising biometric authentication method for resolving this issue. This paper proposes a new on-line signature verification algorithm that utilizes only pen position trajectories. The algorithm is an improvement in our previous work [9]. In preliminary experiments, the equal error rate (EER) was 1.2...

A carrier offset correction scheme based on Maximum Likelihood (ML) method for the downlink of an Orthogonal Variable bit rate Multicarrier-CDMA (MCCDMA) scheme in a fast frequency selective Rayleigh fading channel is proposed and discussed. The proposed methodology assumes perfect knowledge of phase offset, whereas an Equal Gain Combining (EGC) scheme is considered for MC-CDMA detection. Resul...