This paper presents a new adaptive soft combiner implemented on cognitive radio nodes for distributed cooperative spectrum sensing. The key feature of the proposal is the use of the standard set-membership normalized least-mean squares (SMNLMS) algorithm, which enjoys good tracking capabilities, while entailing low computational burden. Indeed, simulation results show that the computational sav...

RÉSUMÉ Nous décrivons dans cet article l’utilisation d’algorithmes d’inférence grammaticale pour la tâche de chunking, pour ensuite les comparer et les combiner avec des CRF (Conditional Random Fields), à l’efficacité éprouvée pour cette tâche. Notre corpus est extrait du French TreeBank. Nous proposons et évaluons deux manières différentes de combiner modèle symbolique et modèle statistique ap...

We present a mathematical model of coherent and incoherent beam combination in a thick hologram. We also derive the formulae relating the read and write angles to the read and write wavelengths for the combiner. Furthermore, we present a new technique for determining the M#, and establish that the M# required for a coherent combiner is substantially less than that needed for an incoherent one. ...

Combiner and Stacked Generalization are two very similar meta-learning methods that combine predictions of multiple classiiers to improve accuracy of any single classiier. In this paper, we compare stacked generalization and combiner from the perspective of training eeciency versus accuracy. We show that both methods improve the accuracy of any single classiier roughly at an equivalent level. M...

This paper proposes an H.263 based DCT-domain video combinel; which is suitable fo r a multipoint continuous presence videoconference system and supports up to six conferees. Main Iissues of the H.263 video combiner are discussed. A software-based combiner is implemented and tested fo r various test sequences. The combined videos have promising quality and the icombiizer is considered very effi...

We report on the opto-mechanical design of the MROI fringe tracker. This instrument, currently under development in collaboration with the University of Cambridge, will be a dedicated fringe tracking beam combiner and spectrographs. I will utilize the "Y" geometry of the array to stabilize fringes on shorter "nearest neighbor" baselines, and thus allow for increased integration times on the lon...

A combiner securely implements a functionality out of a set implementations of another functionality from which some may be insecure. We present two efficient combiners for oblivious linear function evaluation (OLFE). The first is a constant-rate OLFE combiner in the semihonest model, the second combiner implements Rabin string oblivious transfer (RabinOT) from OLFE in the malicious model. As a...

Acoustic communication experiments were carried out during multistatic submarine searches in a littoral area. The purpose of the communication is to send information from the active transmitter to bistatic receivers. After transmission with a low-frequency source, phase-shift keyed signals were recorded on various hydrophone arrays towed by remote platforms. Message recovery is complicated by a...

A neuro-fuzzy-combiner (NFC) is proposed to design an efficient multiple classifier system (MCS) with an aim to have an effective solution scheme for difficult classification problems. Although, a number of combiners exist in the literature, they do not provide consistently good performance on different datasets. In this scenario: 1 we propose an effective multiple classifier system (MCS) based...