reducing word error rate

... of our system. Current state-of-the-art recognizers exhibit word error rates (WER 1) for this corpus of approx- IThe word error rate (WEFt in %) is defined as follows: imately 30%-40% (Finke ... Using Chunk Based Partial Parsing of Spontaneous Speech in Unrestricted Domains for Reducing Word Error Rate in Speech Recognition Klaus Zechner and Alex Waibel Language Technologies Institute ... generate scores for an Nbest list reranking component. The results are promising, in that the best perfor- mance on a randomly selected test set is an absolute decrease in word error rate...

Ngày tải lên: 23/03/2014, 19:20

... contains an error, the receiver rejects the ZERO BIT ERROR RATE Cabling infrastructure providers are following KRONE’s lead regarding the importance of having the lowest bit error rate possible. ... and cause an error. KRONE has selected a level 100 times lower than the worst case in the Standard and has called this BER condition of 10- 12 as ZERO BIT ERROR RATE. Zero Bit Error Rate (ZBER) ... plus others can all cause a bit error (eg. it is the reception of 0 when 1 was transmitted or vice versa). The Bit Error Rate (BER) is a measure of how often these errors occur. Statistical Method Some...

Ngày tải lên: 24/01/2014, 03:20

... different ef- fects: non-final repeated words and words near frag- ments have higher error rates, while final repetitions and words following repetitions have lower error rates. After controlling for other ... word error rate (IWER). We assume that a substitution or deletion error can be assigned to its corresponding reference word, but for insertion errors, there may be two adjacent ref- erence words ... 1: Individual word error rates for different word types, and the proportion of words belonging to each type. Deletions of filled pauses, fragments, and guesses are not counted as errors in the...

Ngày tải lên: 20/02/2014, 09:20

... any sentence- level loss function such as BLEU (Papineni et al., 2001), Word Error Rate, or Position-independent Error Rate. Recently, Tromble et al. (2008) extended MBR decoding to translation ... is unrelated to the evaluation met- ric. Two popular techniques that incorporate the error criterion are Minimum Error Rate Train- ing (MERT) (Och, 2003) and Minimum Bayes- Risk (MBR) decoding ... Boston, MA, USA. W. Macherey, F. Och, I. Thayer, and J. Uszkoreit. 2008. Lattice-based Minimum Error Rate Train- ing for Statistical Machine Translation. In EMNLP, Honolulu, Hawaii, USA. H. Mi,...

Ngày tải lên: 23/03/2014, 16:21

... HLT/NAACL. F.J. Och. 2003. Minimum error rate training in statistical machine translation. In ACL. R. E. Schapire and Y. Singer. 1999. Improved boosting algorithms using confidence-rated predictions. Ma- chine ... 2008. c 2008 Association for Computational Linguistics Beyond Log-Linear Models: Boosted Minimum Error Rate Training for N-best Re-ranking Kevin Duh ∗ Dept. of Electrical Engineering University of ... underfitting the training data. We present BoostedMERT, a novel boosting algorithm that uses Minimum Error Rate Training (MERT) as a weak learner and builds a re-ranker far more expressive than log-linear...

Ngày tải lên: 23/03/2014, 17:20

... such methods are word error rate, position-independent word error rate (Tillmann et al., 1997), generation string accu- racy (Bangalore et al., 2000), multi-reference word error rate (Nießen et ... 1 2 3 4 error count unsmoothed error count smoothed error rate (alpha=3) 9405 9410 9415 9420 9425 9430 9435 9440 9445 9450 -4 -3 -2 -1 0 1 2 3 4 error count unsmoothed error count smoothed ... serious overfitting problems. Is it possible to optimize more parameters using the smoothed error rate criterion? Which error rate should be optimized during training? This relates to the important question of...

Ngày tải lên: 23/03/2014, 19:20

... the frequency offset and channel estimation errors. For a fixed channel estimation variance error σ 2 ΔH , a larger variance of frequency offset estimation error, that is, σ 2 res , implies a higher ... pages doi:10.1155/2010/176083 Research Article Bit Error Rate Approximation of MIMO-OFDM Systems with Carrier Frequency Offset and Channel Estimation Errors Zhongshan Zhang, 1 Lu Zhang, 2 Mingli You, 2 and ... properly cited. The bit error rate (BER) of multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems with carrier frequency offset and channel estimation errors is analyzed...

Ngày tải lên: 21/06/2014, 11:20

... will develop our approach to compute the bit error rate of the chaos-based DS-CDMA system. 4.1. BER Analysis Approach. Inordertocomputethebit error rate, the moments of first- and second-order ... Processing Volume 2009, Article ID 571307, 12 pages doi:10.1155/2009/571307 Research Article Accurate Bit Error Rate Calculation for Asynchronous Chaos-Based DS-CDMA over Multipath Channel Georges Kaddoum, 1, ... 26 June 2009; Accepted 23 July 2009 Recommended by Kutluyil Dogancay An accurate approach to compute the bit error rate expression for multiuser chaosbased DS-CDMA system is presented in this paper....

Ngày tải lên: 21/06/2014, 20:20

Ngày tải lên: 21/06/2014, 23:20

Ngày tải lên: 22/06/2014, 19:20

Ngày tải lên: 23/06/2014, 00:20

Ngày tải lên: 23/06/2014, 00:20

Ngày tải lên: 23/06/2014, 01:20

... the results of word spacing error correction only for the test corpus. Table 2: The word spacing error correction results The results of both word spacing error and spell- ing error correction ... previous algorithms have a critical li- mitation: They all corrected word spacing errors and spelling errors separately. Word spacing algo- rithms define the problem as a task for determining ... literary sentences, correcting word spacing error and spelling error is the very essential problem with colloquial style sentences. In order to correct word spacing errors, many algorithms were...

Ngày tải lên: 20/02/2014, 12:20

... the artificial unknown words that combine the uniden- tified unknown words in cross validation and in- frequent words for learning unknown words. We refer to this approach as the error- driven policy. 4 ... describes our strategies for deal- ing with this issue. With this search space representation, we can consistently handle unknown words with character-level nodes. In other words, we use word- level ... need to build a word- character hybrid model that effectively learns the characteristics of unknown words (with character- level nodes) as well as those of known words (with word- level nodes). We...

Ngày tải lên: 17/03/2014, 01:20

... Orsomando G & Magni G (2007) Initial -rate kinetics of human NMN-adenylyltransferas- es: substrate and metal ion specificity, inhibition by products and multisubstrate analogues, and isozyme contributions ... Extranuclear NAD + , such as that generated by Golgi-associated NMNAT2 and by mito- chondrial NMNAT3, is mainly used for energy pro- duction, as a redox cofactor and as substrate of enzymes like NAD + kinase, ... promotes the transcription of NAMPT, the rate limiting enzyme in NAD + synthesis, in a feedback loop that has been recently described [35,36]. NAD + is substrate also for nuclear PARP1, whose overactivation...

Ngày tải lên: 22/03/2014, 16:20

... Chinese word segmentation. We consider here new word detection as an integral part of segmentation, aiming to improve both segmentation and new word detection: detected new words are added to the word ... then treat those “confident” word segments as new words and add them into the existing word list. Based on preliminary experiments, we treat a word segment as a new word if its probability is larger ... no word list can be complete, new word identification is an important task in Chinese NLP. New words in input text are often incorrectly segmented into single-character or other very short words...

Ngày tải lên: 23/03/2014, 14:20

... that can tolerate long delay, channel-coding techniques, like Forward Error Correction (FEC), pro- vide very significant reductions of transmission errors at a comparably moderate bitrate overhead. ... other error- resilient approaches significantly; for some video sequences, the average PSNR can be up to 4 dB higher than that of the Optimal Intra Refreshment approach. Keywords: H.264/AVC, error ... packet loss rate. To further evaluate the performances of the proposed HRMIR approach at the case when the estimated packet loss rate does not match the actual one, we use 10% as packet loss rate in...

Ngày tải lên: 20/06/2014, 22:20

Ngày tải lên: 21/06/2014, 22:20