viterbi algorithm for maximum likelihood decoding ppt

Ngày tải lên: 09/08/2014, 18:22

... all. 9.2 ALGORITHMS FOR MAXIMUM LIKELIHOOD ESTIMATION To perform maximum likelihood estimation in practice, we need an algorithm to perform the numerical maximization of likelihood. In this section, ... 9 ICA by Maximum Likelihood Estimation A very popular approach for estimating the independent component analysis (ICA) model is maximum likelihood (ML) estimation. Maximum likelihood estimation ... is actually equal to the likelihood. This means that infomax is equivalent to maximum likelihood estimation. 9.4 EXAMPLES Here we show the results of applying maximum likelihood estimation to...

Ngày tải lên: 23/12/2013, 07:19

... compare SIMR's performance on these language pairs to the performance of other algorithms, Table 2 shows that the performance on other language pairs is no worse than performance on French/English. ... was 5.7 characters. Church's char_align algorithm (Church, 1993) is the only algorithm that does not use sentence boundary information for which com- parable results have been reported, ... mapping algorithms mitigate this source of noise either by assigning lower weights to 307 A Portable Algorithm for Mapping Bitext Correspondence I. Dan Melamed Dept. of Computer and Information...

Ngày tải lên: 17/03/2014, 23:20

... 1.0 for the purpose of local contrast preservation and is set to -1.0 for the purpose of local contrast enhancement. Therefore, expression (10), referred to as the general form of SDRCLCE algorithm, ... I in (x, y). There- fore, expression (3) presents a basic form in the spatial domain for image enhancement with local contrast preservation. 2.2. The general form of SDRCLCE algorithm In this section, ... variant dynamic range compression algorithm with local contrast preservation based on the concept of local contrast range transform. Although this method performs well for enhancement of LDR images,...

Ngày tải lên: 21/06/2014, 00:20

... kbits/s for VoIP traffic, R VS = 384 kbits/s for video streaming traffic and R BE = 256 kbits/s for BE traffic. The target BER values are BER RT_max =10 -3 for RT traffic and BER BE_- max =10 -11 for ... scheduling delay for different traffic types. Note that the PFS algorithm performs very poorly, since it only considers th e channel state and has no mechanism for QoS provision for delay-sensitive ... ‘Wireless system model and algorithm parameters’ section, the system model and algorithm parameters are presented, while the algorithm performance evaluation is given in ‘Performance analysis’ section....

Ngày tải lên: 21/06/2014, 02:20

... estimation for MVC. It is an interesting future work to design an integral algorithm to incorporate fast disparity and motion estimation algorithm into our current work for overall performance ... work is focusing on fast macroblock mode selection algorithm for MVC. If the proposed algorithm goes collaboratively with the other fast encoding algorithm, such as fast disparity and motion estimation, ... ANALYSIS To evaluate the performance of the proposed hybrid fast macroblock mode selection algorithm, the experiments are performed complying with the common test conditions for MVC [24]. The detailed...

Ngày tải lên: 22/06/2014, 00:20

... 3: Learning curves for wavelet- and nonwavelet-based pro- portionate algorithms. main MPNLMS algorithm. Note that SPNLMS stands for the segmented PNLMS [5]. This is the MPNLMS algorithm in which ... convergence problem of LMS for the color input is the so-called transform domain LMS [7]. By using a unitary transform such as discrete Fourier transform (DFT) and discrete cosine transform (DCT), we can ... SPNLMS algorithms. Figure 6 shows lear ning curves for identifying the DSL echo path. We can see that the NLMS al- gorithm and the wavelet-based NLMS algorithm have nearly the same performance,...

Ngày tải lên: 22/06/2014, 19:20

Ngày tải lên: 22/06/2014, 22:20

Ngày tải lên: 22/06/2014, 23:20

... The Viterbi A* and iterative Viterbi A* algorithms are significantly faster than the Viterbi and A*(best) algorithms. Although the iterative Viterbi A* significantly outperforms the Viterbi A* for ... 100 0 20 40 60 80 100 120 140 160 180 200 k sentences/second ● Viterbi A*(best) Viterbi A* iterative Viterbi A* Figure 4: Decoding speed of k-best decoding algorithms for various k for CoNLL 2003 dataset. 6 Related work The Viterbi algorithm is the only exact algorithm widely ... se- quence algorithm is the Viterbi A* algorithm as shown in Algorithm 3. The algorithm consists of one forward pass and an A* backward pass. The forward pass computes and stores the Viterbi forward...

Ngày tải lên: 16/03/2014, 19:20

... iterative algorithm remains the same as before. 6. EXPERIMENTAL VERIFICATION OF THE ITERATIVE DECODING ALGORITHM In this section, we present the results of applying the itera- tive decoding algorithm ... Iterative Decoding Algorithm for Fusion of Multimodal Information Shankar T. Shivappa, Bhaskar D. Rao, and Mohan M. Trivedi Department of Electrical and Computer Engineering, University of California, ... generalized multimodal version of the iterative decoding algorithm (see Section 5) relaxes this re- quirement. Moreover, the iterative decoding algorithm per- forms better than the joint model and the...

Ngày tải lên: 22/06/2014, 19:20

Ngày tải lên: 09/08/2014, 18:22

Ngày tải lên: 09/08/2014, 18:22

Ngày tải lên: 09/08/2014, 18:22

Ngày tải lên: 09/08/2014, 22:22

Ngày tải lên: 12/08/2014, 17:20

Ngày tải lên: 14/08/2014, 20:20

Ngày tải lên: 14/08/2014, 20:20

... median objective valuses for Case I (b) Standard deviations for Case I (c) Best, mean and median objective values for Case II (d) Standard deviations for Case II Figure 7. Convergence ... description of genetic algorithm In this section we provide a brief introduction to the genetic algorithm. Genetic algorithms (GA) are a class of stochastic optimization algorithms inspired by ... Therefore, we obtain the following expression for the velocity downstream of a single VAWT: 0 2 [1 ] 1(/) a uU x r α =− + (21) In equation (21), α is the same as given in equation (4). For...

Ngày tải lên: 05/09/2013, 17:03

... get little for your money. A basement on that same lot will cost more than a crawl space, but you now have a marketable product people will pay for. Your unfinished basement is expandable space for ... for prof- itability. As you look for a lot, keep in mind the type of foundation you want. There are many ways to save money on a foundation. The best way is to buy a lot that is well-suited for ... is lost on many people. Before you begin this wealth-building process, decide if you plan to keep it. When you have $100,000 equity in your house and you have a desire for a shiny new car, are you...

Ngày tải lên: 24/01/2014, 01:20