maximum likelihood decoder ppt
Tài liệu Bài 9: ICA by Maximum Likelihood Estimation ppt
... 9ICA by Maximum Likelihood EstimationA very popular approach for estimating the independent component analysis (ICA)model is maximum likelihood (ML) estimation. Maximum likelihood estimation ... all.9.2 ALGORITHMS FOR MAXIMUM LIKELIHOOD ESTIMATIONTo perform maximum likelihood estimation in practice, we need an algorithm toperform the numerical maximization of likelihood. In this section, ... is actually equal to the likelihood. This means thatinfomax is equivalent to maximum likelihood estimation.9.4 EXAMPLESHere we show the results of applying maximum likelihood estimation to...
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Tài liệu Báo cáo khoa học: "Refined Lexicon Models for Statistical Machine Translation using a Maximum Entropy Approach" pptx
... a maximum entropy translation model.Other authors have applied this approach to lan-guage modeling (Rosenfeld, 1996; Martin et al.,1999; Peters and Klakow, 1999). A short reviewof the maximum ... ESCA,Eurospeech, pages 1435–1438, Rhodes, Greece.K.A. Papineni, S. Roukos, and R.T. Ward. 1998. Maximum likelihood and discriminative training ofdirect translation models. In Proc. Int. Conf. onAcoustics, ... In-teligence, 19(4):380–393, July.Eric S. Ristad. 1997. Maximum entropy modellingtoolkit. Technical report, Princeton Univesity.R. Rosenfeld. 1996. A maximum entropy approach toadaptive statistical...
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Tài liệu A SOCIAL - MEDIA DECODER ppt
... “I assume CBS will keep going with A Social- Media Decoder Photographs byFeature...
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Báo cáo khoa học: "Analysis System of Speech Acts and Discourse Structures Using Maximum Entropy Model*" pptx
... 1997. A Maximum Entropy Approach to Identifying Sentence Boundaries. In Proceeding of the Fifth Conference on Applied Natural Language Processing, pages 16-19. Ristad, E. 1996. Maximum ... P(Ui I G0 P(SilGO (6) 233 Analysis System of Speech Acts and Discourse Structures Using Maximum Entropy Model* Won Seug Choi, Jeong-Mi Cho and Jungyun Seo Dept. of Computer Science, ... statistical dialogue analysis model to determine discourse structures as well as speech acts using maximum entropy model. The model can automatically acquire probabilistic discourse knowledge from...
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Báo cáo sinh học: " Research Article Inverse Modeling of Respiratory System during Noninvasive Ventilation by Maximum Likelihood Estimation" doc
... Processing,Prentice-Hall, Englewood Cliffs, NJ, USA, 1993.[12] T. T. Pham and R. J. P. DeFigueiredo, Maximum likelihood estimation of a class of non-Gaussian densities with appli-cation to Lp deconvolution,” ... Processing, vol. 37, no. 1, pp. 73–82, 1989.[13] B. T. Sieskul and S. Jitapunkul, “An asymptotic maximum likelihood for estimating the nominal angle of a spatiallydistributed source,” International ... logarithmic likelihood func tion with respectto σ2r:∂ logLy1:N; Θ, σr, pr∂σr= 0. (11)With the help of the conditional probability theorem, by(10), the logarithmic likelihood...
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Báo cáo sinh học: " Research Article Maximum-Likelihood Semiblind Equalization of Doubly Selective Channels Using the EM Algorithm" docx
... results for the following equaliza-tion algorithms.(i) Maximum Likelihood equalization using perfectchannel knowledge.(ii) Maximum likelihood equalization with channel esti-mation based only ... Communications, vol.47, no. 8, pp. 1181–1193, 1999.[9] H. Kubo, K. Murakami, and T. Fujino, “Adaptive maximum- likelihood sequence estimator for fast time-varying intersym-bol interference channels,” IEEE ... IEEETransactions on Communications, vol. 42, no. 2–4, pp. 941–950, 1994.[12] R. A. Iltis, “A Bayesian maximum- likelihood sequence esti-mation algorithm for a priori unknown channels and symboltiming,”...
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Báo cáo hóa học: " Research Article Maximum Likelihood DOA Estimation of Multiple Wideband Sources in the Presence of Nonuniform Sensor Noise" pdf
... modified to carry outstep 1.4.2. Approximately concentrated maximum likelihood algorithm (AC-ML)In Section 4.1, an iterative maximum likelihood widebandDOA estimation algorithm is presented. ... all the constant terms,the log -likelihood function L(Ω) can be expressed asL(Ω)=−PN2log σ2−1σ2N/2k=1g(k)2. (7)It follows that the maximum likelihood estimator for Ω issimplyΩ ... parameters by maximum likelihood, ” in Proceedingsof the IEEE International Conference on Acoustics, Speech andSignal Processing (ICASSP ’86), pp. 2819–2822, Tokyo, Japan,1986.[8] A. G. Jaffer, “Maximum...
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Báo cáo hóa học: " Research Article Maximum Likelihood Timing and Carrier Synchronization in Burst-Mode Satellite Transmissions" pot
... determines the locationνMof the maximum over this set. The second step (fine search) makes an inter-polation between the samples P(νn) and computes the local maximum nearest toνM. It should ... might fear, the maximization ofthe likelihood function Λ(ν, ε, ϕ) needs not be made on athree-dimensional domain. Actually, the location (ν, ε, ϕ)ofthe maximum can be found through simple ... and NetworkingVolume 2007, Article ID 65058, 8 pagesdoi:10.1155/2007/65058Research Article Maximum Likelihood Timing and Carrier Synchronization inBurst-Mode Satellite TransmissionsMichele...
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Báo cáo hóa học: " Research Article Maximum Likelihood DOA Estimation of Multiple Wideband Sources in the Presence of Nonuniform Sensor Noise" doc
... modified to carry outstep 1.4.2. Approximately concentrated maximum likelihood algorithm (AC-ML)In Section 4.1, an iterative maximum likelihood widebandDOA estimation algorithm is presented. ... all the constant terms,the log -likelihood function L(Ω) can be expressed asL(Ω)=−PN2log σ2−1σ2N/2k=1g(k)2. (7)It follows that the maximum likelihood estimator for Ω issimplyΩ ... stepwise concentratesthe log -likelihood function, while the second is a noniter-ative algorithm that maximizes the derived approximately-concentrated (AC) log -likelihood function.The rest...
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Báo cáo hóa học: " Research Article A Maximum Likelihood Estimation of Vocal-Tract-Related Filter Characteristics for Single Channel Speech Separation" doc
... un-derlying signals.Now we apply fy(y) in a maximum likelihood frame-work to estimate the parameters of the underlying signals.The main objective of the maximum likelihood estimator isto find the kth ... multipitchdetection, and maximum likelihood estimation in which weformulate the proposed approach. In particular, we followthe procedure for obtaining the maximum likelihood estima-tor by ... estimate of the un-derlying signals’ vocal-tract-related filters using the obtainedPDF in a maximum likelihood framework. In Table 2,nota-tions and definitions which are frequently used in this...
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Báo cáo hóa học: " Two-Stage Maximum Likelihood Estimation (TSMLE) for MT-CDMA Signals in the Indoor Environment" doc
... Two-Stage Maximum Likelihood Estimation for MT-CDMA 59functions; the superscripts −1 and 0 on the data symbols ... Gn(G-terms with sub-scripts n), and current data bit Iq1,n, is Gaussian with theTwo-Stage Maximum Likelihood Estimation for MT-CDMA 57Serial datastreamDataencoderSerial-to-parallel dataconverterexp( ... S2/2σ2r,rep-resents the ratio of the power associated with the direct pathTwo-Stage Maximum Likelihood Estimation for MT-CDMA 63128/8256/16Coherent systemTSMLE-based system0 5 10...
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Báo cáo hóa học: " Maximum Likelihood Turbo Iterative Channel Estimation for Space-Time Coded Systems and Its Application to Radio Transmission in Subway Tunnels" potx
... re-sponse F(z) will be the maximum phase and anticausal, andthe resulting ISI will be difficult to compensate. To overcomethis limitation, we choose F∗(z−1) to be the maximum phaseand thus the ... Journal on Applied Signal Processing 2004:5, 727–739c 2004 Hindawi Publishing Corporation Maximum Likelihood Turbo Iterative ChannelEstimation for Space-Time Coded Systemsand Its Application ... system throughput.Keywords and phrases: STC, turbo equalization, turbo channel estimation, maximum likelihood channel estimation, GSM, sub-way tunnels.1. INTRODUCTIONRecently, the so-called...
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Báo cáo hóa học: " Estimation of Road Vehicle Speed Using Two Omnidirectional Microphones: A Maximum Likelihood Approach" doc
... nextsection, which will be shown to compare favorably to the in-direct method of [15].3. APPROXIMATE MAXIMUM LIKELIHOOD ESTIMATE3.1. DerivationConsider first the problem of estimating v0without knowl-edge ... pp. 67–94, 1996.[10] J. W. Betz, “Comparison of the deskewed short-time cor-relator and the maximum likelihood correlator,” IEEETrans. Acoustics, Speech, and Signal Processing, vol. 32, no. 2,pp. ... Trans. Acoustics,Speech, and Signal Processing, vol. 29, no. 3, 1981.[13] J. A. Stuller, Maximum- likelihood estimation of time-varying delay—part I,” IEEE Trans. Acoustics, Speech, and Sig-nal...
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