Browsing by Subject "Statistical analysis"
Now showing items 119 of 19

Characterization of phylogenetic networks with NetTest
(20100520)
Article
Open AccessBackground: Typical evolutionary events like recombination, hybridization or gene transfer make necessary the use of phylogenetic networks to properly depict the evolution of DNA and protein sequences. Although several ... 
Deterministic and stochastic assessment of the harmonic currents consumed by discharge lamps
(201101)
Article
Restricted access  publisher's policy 
Empirical approach for realtime estimation of air flow rates in a subway station
(20140501)
Article
Restricted access  publisher's policyThe EUfunded project called SEAM4US (Sustainable Energy mAnageMent for Underground Stations) is targeted to define advanced control systems for costeffective management of subway stations, which will be applied to the pilot 
Estimation of the uncertainty in time domain indices of RR time series
(IEEEINST ELECTRICAL ELECTRONICS ENGINEERS INC, 20070331)
Article
Open AccessA method for estimating the uncertainty in timedomain indices of RR time series is described. The method relies on the central limit theorem that states that the distribution of a sample average of independent samples has ... 
Frames: a maximum entropy statistical estimate of the inverse problem
(199701)
Open AccessA maximum entropy statistical treatment of an inverse problem concerning frame theory is presented. The problem arises from the fact that a frame is an overcomplete set of vectors that defines a mapping with no unique ... 
Generalized equipartition theorem and confining walls
(201506)
Article
Open AccessIt is shown that the generalized equipartition theorem as applied to the momentum may fail, even though the usual conditions of validity are met. This failure is linked to the nature of the confining walls, with ideal walls ... 
Ngrambased Machine Translation
(200612)
Article
Open AccessThis article describes in detail an ngram approach to statistical machine translation. This approach consists of a loglinear combination of a translation model based on ngrams of bilingual units, which are referred to ... 
On the inverse windowed Fourier transform
(IEEEINST ELECTRICAL ELECTRONICS ENGINEERS INC, 19991130)
Article
Open AccessThe inversion problem concerning the windowed Fourier transform is considered. It is shown that, out of the infinite solutions that the problem admits, the windowed Fourier transform is the "optimal" solution according to ... 
Positive timefrequency distributions based on joint marginal constraints
(IEEEINST ELECTRICAL ELECTRONICS ENGINEERS INC, 19960801)
Article
Open AccessThis correspondence studies the formulation of members of the CohenPosch class of positive timefrequency energy distributions. Minimization of crossentropy measures with respect to different priors and the case of ... 
Reply to
(200910)
Article
Restricted access  publisher's policy 
Routing with prioritization based on statistics in OBS networks
(2009)
Conference report
Open AccessThis paper introduces a new strategy to provide QoS in IP/OBS networks, using Routing with Prioritization Based on Statistics (RPBS). This proposal uses the feedback scheme in optical networks to provide statistical knowledge ... 
Statistical Modelling of Channel Occupancy in Trunked PAMR Systems
(Elsevier Science B.V., 199706)
Article
Restricted access  publisher's policyPublic access mobile radio systems (PAMR) using trunking technology allow more efficient use of the frequency spectrum, as all the users of the system jointly use a common pool of channels. Trunked PAMR systems can operate ... 
Statistical reference criteria for adaptive signal processing in digital communications
(IEEEINST ELECTRICAL ELECTRONICS ENGINEERS INC, 19970101)
Article
Open AccessA general criterion for the design of adaptive systems in digital communications called the statistical reference criterion is proposed. The criterion is based on imposition of the probability density function of the ... 
Statistical study of resonance in AC traction systems equipped with Steinmetz circuit
(201310)
Article
Restricted access  publisher's policyAC traction systems can be 25 kV/50 Hz singlephase, nonlinear, timevarying loads of random naturecausing unbalance and distortion of the supply voltages. To reduce voltage unbalance, thyristor controlledreactances are ... 
Statistics of the slopemethod estimator
(Optical Society of America, 20001130)
Article
Open AccessThe slope method has customarily been used and is still used for inversion of atmospheric optical parameters, extinction, and backscatter in homogeneous atmospheres from lidar returns. Our aim is to study the underlying ... 
System identification using a linear combination of cumulant slices
(IEEEINST ELECTRICAL ELECTRONICS ENGINEERS INC, 19930701)
Article
Open AccessIn this paper we develop a new linear approach to identify the parameters of a moving average (MA) model from the statistics of the output. First, we show that, under some constraints, the impulse response of the system ... 
The continuous wavelet transform as a maximum entropy solution of the corresponding inverse problem
(IEEEINST ELECTRICAL ELECTRONICS ENGINEERS INC, 19990731)
Article
Open AccessThe continuous wavelet transform is obtained as a maximum entropy solution of the corresponding inverse problem. It is well known that although a signal can be reconstructed from its wavelet transform, the expansion is ... 
The influence of 5HTT and COMT genotypes on verbal fluency in ecstasy users
(201009)
Article
Restricted access  publisher's policyDeficits in verbal fluency associated with ecstasy use have been well established; however, the mechanisms underlying this impairment have yet to be elucidated. In this study we investigated for the first time whether there ... 
Wigner higherorder spectra: definition, properties, computation and application to transient signal analysis
(IEEEINST ELECTRICAL ELECTRONICS ENGINEERS INC, 19930131)
Article
Open AccessThe Wigner higher order moment spectra (WHOS) are defined as extensions of the WignerVille distribution (WD) to higher order moment spectra domains. A general class of timefrequency higher order moment spectra is also ...