boosted minimum error rate training
Báo cáo khoa học: "Beyond Log-Linear Models: Boosted Minimum Error Rate Training for N-best Re-ranking" docx
... whichhave the potential problem of underfitting the training data. We present BoostedMERT, anovel boosting algorithm that uses Minimum Error Rate Training (MERT) as a weak learnerand builds a re-ranker ... 2008.c2008 Association for Computational LinguisticsBeyond Log-Linear Models: Boosted Minimum Error Rate Training for N-best Re-rankingKevin Duh∗Dept. of Electrical EngineeringUniversity ... HLT/NAACL.F.J. Och. 2003. Minimum error rate training in statisticalmachine translation. In ACL.R. E. Schapire and Y. Singer. 1999. Improved boostingalgorithms using confidence-rated predictions....
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Báo cáo khoa học: "Efficient Minimum Error Rate Training and Minimum Bayes-Risk Decoding for Translation Hypergraphs and Lattices" pptx
... 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 (Kumar and Byrne, 2004).These ... LinguisticsUniversity of MarylandCollege Park, MD 20742, USAredpony@umd.eduAbstract Minimum Error Rate Training (MERT)and Minimum Bayes-Risk (MBR) decod-ing are used in most current state-of-the-art ... pages 163–171,Suntec, Singapore, 2-7 August 2009.c2009 ACL and AFNLPEfficient Minimum Error Rate Training and Minimum Bayes-Risk Decoding forTranslation Hypergraphs and LatticesShankar Kumar1and...
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Báo cáo khoa học: "Minimum Error Rate Training in Statistical Machine Translation" potx
... than using the MMI training criterion (with our method to define pseudo-references) and that optimizing error rate as part ofthe training criterion helps to obtain better error rate on unseen test ... overscores for individual sentences.4 Training Criteria for Minimum Error Rate Training In the following, we assume that we can measurethe number of errors in sentence by comparing itwith ... 1 2 3 4 error count unsmoothed error countsmoothed 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 countsmoothed...
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Tài liệu KRONE - White paper - Zero Bit Error Rate doc
... contains an error, the receiver rejects theZERO BIT ERROR RATE Cabling infrastructure providers are following KRONE’s lead regarding theimportance of having the lowest bit error rate possible. ... and cause an error. KRONE has selected a level 100 times lower than theworst case in the Standard and has called this BERcondition of 10-12as ZERO BIT ERROR RATE. Zero Bit Error Rate (ZBER) ... plus others can all cause a bit error (eg. it is thereception of 0 when 1 was transmitted or vice versa).The Bit Error Rate (BER) is a measure of how oftenthese errors occur.Statistical MethodSome...
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CHANGES IN BANK RATE, MINIMUM LENDING RATE, MINIMUM BAND DEALING RATE, REPO RATE AND OFFICIAL BANK RATE pdf
... 22 Jun 6.0000Min Lending Rate CHANGES IN BANK RATE, MINIMUM LENDING RATE, MINIMUM BAND 1 DEALING RATE, REPO RATE AND OFFICIAL BANK RATE Date Neweffective rate %Bank Rate 1694 Oct 6.00001695 ... BANK RATE, MINIMUM LENDING RATE, MINIMUM BAND 1 DEALING RATE, REPO RATE AND OFFICIAL BANK RATE 1,2Date New Date New Date New Date New Date Neweffective rate effective rate effective rate effective ... - Bank Rate, Minimum Lending rate, Repo Rate and Official Bank Rate are interest rates. The Minimum Band 1 Dealing Rate are discount rates. 2 - 16.9.92, UK leaves the European Exchange Rate Mechanism....
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Báo cáo khoa học: "Using Chunk Based Partial Parsing of Spontaneous Speech in Unrestricted Domains for Reducing Word Error Rate in Speech Recognition" potx
... 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 ... 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 ... 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 Carnegie...
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Báo cáo hóa học: " Research Article Bit Error Rate Approximation of MIMO-OFDM Systems with Carrier Frequency Offset and Channel Estimation Errors" ppt
... the frequencyoffset and channel estimation errors. For a fixed channelestimation variance error σ2ΔH, a larger variance of frequencyoffset estimation error, that is, σ2res, implies a higher ... pagesdoi:10.1155/2010/176083Research ArticleBit Error Rate Approximation of MIMO-OFDM Systems withCarrier Frequency Offset and Channel Estimation ErrorsZhongshan Zhang,1Lu Zhang,2Mingli You,2and ... properlycited.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...
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báo cáo hóa học:" Research Article Accurate Bit Error Rate Calculation for Asynchronous Chaos-Based DS-CDMA over Multipath Channel" pptx
... will develop our approachto compute the bit error rate of the chaos-based DS-CDMAsystem.4.1. BER Analysis Approach. Inordertocomputethebit error rate, the moments of first- and second-order ... ProcessingVolume 2009, Article ID 571307, 12 pagesdoi:10.1155/2009/571307Research ArticleAccurate Bit Error Rate Calculation for AsynchronousChaos-Based DS-CDMA over Multipath ChannelGeorges Kaddoum,1, ... 26 June 2009; Accepted 23 July 2009Recommended by Kutluyil DogancayAn accurate approach to compute the bit error rate expression for multiuser chaosbased DS-CDMA system is presented in thispaper....
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Báo cáo hóa học: " Research Article An Iterative Soft Bit Error Rate Estimation of Any Digital Communication Systems Using a Nonparametric Probability Density Function" pptx
... system receivers cannot be calculated analytically. The bit error rate (BER) is thuscomputed using the Monte Carlo (MC) simulation (Bit Error Counting). It is shown that if we wish to have reliable ... only 3000 samples, gives a value of theBER with an error of 0.2dB.7. ConclusionsIn this paper, we have suggested a new iterative soft bit error rate estimation for the study of any digital communicationsystem ... fX(x)2=0. (12)Moreover, the optimal smoothing parameter hNis com-puted in the minimum of the Integrated Mean Squared Error (IMSE) sense. An approximation of the IMSE is given by thefollowing formula:...
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Linear Minimum Mean-Square-Error Transceiver Design for Amplify-and-Forward Multiple Antenna Relaying Systems
... non-regenerative AF MIMO-OFDM systems underchannel estimation errors is investigated. Second-order moments of chan-nel estimation errors in the two hops are first deduced. Then based on theBayesian ... compress-and-forward (CF). For AFstrategy, the relay only amplifies and forwards the received signal from the sourceto the destination, without knowing what it has received. While for DF strategy,the relay will ... destination will be jointly designed. Both uplink and downlinkscenarios are considered.Linear Minimum Mean-Square -Error Transceiver Design for Amplify-and-ForwardMultiple Antenna Relaying SystemsbyChengwen...
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Báo cáo khoa học: "Minimum Risk Annealing for Training Log-Linear Models∗" doc
... and minimum error training in all three lan-guage pairs (p < 0.001, paired-sample permuta-tion test with 1000 replications). Minimum risk annealing generally outper-formed minimum error training ... Slove-nian, minimum risk annealing is significantly better than theother training methods, while minimum error is significantlyworse. For Bulgarian, both minimum error and annealed min-imum risk training ... to training log-linear combinations of models for dependencyparsing and for machine translation (§6). Finally,we note the connections of minimum risk training to max-margin training and minimum...
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Báo cáo hóa học: " Minimum-length scheduling with rate control in wireless networks: a shortest path approach" docx
... results are illustrated with a setof numerical examples.Keywords: Cross-layer design, Minimum- length scheduling, Rate control, Stochastic shortest pathsI. IntroductionThe problem of minimum- length ... transmission rates. Thisinformation can be captured by the K-dimensional rate vector r(t)=(r1(t), , rK(t)), where rk( t)istherateoftrans mitter k at slot t. If a transmitter is assigned a zero rate, ... optimized, but the transmissionrates are fixed, and (3) th e transmission powers arefixed and each transmitter is allowed to choose its rate from a predetermined, finite set of rates, common to alltransmitters....
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Báo cáo hóa học: " Research Article Rate-Distortion Optimization for Stereoscopic Video Streaming with Unequal Error Protection" ppt
... on optimal rate allocation and error resilient streaming on error prone channels such as packeterasure channel (PEC). The early studies on monoscopicvideo streaming mainly concentrate on nonlayered ... Processing 11Table 3: Video encoder bit rates and Raptor encoder protection rates for “Rena” video.Pe= 0.1RC(Kbps) Encoder bit rates (Kbps) Protection rates(optimal) Proposed (optimal) EEP ... 0.216 0.000Table 4: Video encoder bit rates and Raptor encoder protection rates for “Soccer” video.Pe= 0.1RC(Kbps) Encoder bit rates (Kbps) Protection rates(optimal) Proposed (optimal) EEP...
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Báo cáo hóa học: " Research Article Optimal JPWL Forward Error Correction Rate Allocation for Robust JPEG 2000 Images and Video " docx
... onaccurate transmission errors modeling at application level.The generated models allow refinement of error protectionstrategies.3.1. MANET loss patterns generationThe platform used to generate ... of errors), the transmission is oftensuccessful.The number of error- free bursts is lower than the numberof error bursts, but this gap is compensated by the time spentin error- free state (error- free ... decoding rate (%)Successful decoding rate versus carrier to noise ratio11 12 13 14 15 16 17 18 19 20C/N (dB)Layered unequal error protection-GuoDynamic FEC rate allocation schemeEqual error...
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