linear block codes for error correction ppt

... practical solution for many NLP problems. This paper presents new, concise ILP formu- lations for projective and non-projective depen- dency parsing. We believe that our formula- tions can pave the way for ... respect to exact inference for the same set of features. Bold indicates the best result for a language. As for overall performance, both the exact and relaxed full model outperform the arc- factored ... practical solution for many problems. Their per- formance depends on the dimensions and degree of sparsity of the constraint matrix A. Riedel and Clarke (2006) proposed an ILP for- mulation for dependency...

Ngày tải lên: 20/02/2014, 07:20

... technique for computer de- tection and correction of spelling errors. Comm. of the Assoc. for Computing Machinery, 7(3):171- 6. 29 The error rules capture the correspondence be- tween the error ... on the left of LEx. In our morphographemic model, we add a similar formalism for expressing error rules (3). (3) ERROR FORMALISM ErrSurf =~ Surf { PLC- PRC } where PLC = partition left ... spelling errors in scientific and scholarly text. Journal of the American Society .for Information Science, 34(1):51-8. Pulman, S. and Hepple, M. (1993). A feature-based formalism for two-level...

Ngày tải lên: 08/03/2014, 07:20

... eliminated the errors of unknown words, and find errors with error correction rules and manual correc- tion log, suggesting the candidate words. Users can describe error correction rule easily ... Figure 4. In Figure 4, automatic correction means the right correction made by error detection using rule and manual correction log. Manual correction means the correction made directly by user. ... avoided. 3.3 Correction of Errors The result produced by any tagger will contain errors, and correcting these errors would cost very much. Hence, it would be helpful to correct tagging errors using...

Ngày tải lên: 08/03/2014, 05:21

... channel model for spelling correction. This paper describes a new channel model for spelling correction, based on generic string to string edits. Using this model gives significant performance improvements ... model for spelling correction. This paper describes an improvement to noisy channel spelling correction via a more powerful model of spelling errors, be they typing mistakes or cognitive errors, ... (1991). “Probability Scoring for Spelling Correction. ” Statistics and Computing 1: 93-103. Damerau, F. (1964). “A technique for computer detection and correction of spelling errors.” Communications...

Ngày tải lên: 23/03/2014, 19:20

Ngày tải lên: 22/06/2014, 19:20

Ngày tải lên: 23/06/2014, 01:20

... of cooperative protocols: amplify-and- forward (AF), decode-and-forward (DF) and compress-and-forward (CF). For AF strategy, the relay only amplifies and forwards the received signal from the source to ... terms of transceiver design minimizing MSE, for dual-hop AF MIMO relay systems with single relay, the optimal closed-form solution for joint optimal for- warding and equalizer matrices assuming ... designed. Both uplink and downlink scenarios are considered. Linear Minimum Mean-Square -Error Transceiver Design for Amplify-and-Forward Multiple Antenna Relaying Systems by Chengwen Xing B.Eng.,...

Ngày tải lên: 20/11/2012, 11:31

... letter for agencies to send to employees who are affected by the new error correction procedures 5 CFR Part 1605, Correction of Administrative Errors; Final Rule -1- ●● ●● ● 98-21 BULLETIN for ... on Completing IRS Form W-2, Wage and Tax Statement, and Information Agencies Should Provide to Employees A. IRS Form W-2. The IRS has advised the Board that its instructions for report- ing makeup ... correctly. Block 1, From. Enter name, address, and Zip Code of the submitting payroll office. Block 2, Payroll Office Number. Enter the 8-position assigned payroll office number in XX-XX-XXXX format. Block...

Ngày tải lên: 10/12/2013, 04:15

... well as the Speech Dasher lattice correction tool (Vertanen, 2004). We feel that it is potentially useful not only for auto- matic speech recognition, but also for machine translation and any other ... representation of a possibly errorful hypothesis is available. A video of this in- terface in Ogg Theora format 1 can be viewed at http://www.cs.cmu.edu/˜dhuggins/touchcorrect.ogg. 1 For Mac OS X: http://xiph.org/quicktime/download.html For ... describing the mo- tivation for this work, followed by a “silent” demo of the correction method itself, using pre-recorded audio. We will then demonstrate live speech input and correction using our...

Ngày tải lên: 20/02/2014, 09:20

... 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 are shown ... Statistical Model for Word Spacing and Spelling Error Correction 3.1 Problem Definition Given a sentence T which includes both word spacing errors and spelling errors, we create correction candidates ... 61–64, Prague, June 2007. c 2007 Association for Computational Linguistics A Joint Statistical Model for Simultaneous Word Spacing and Spelling Error Correction for Korean Hyungjong Noh* Jeong-Won...

Ngày tải lên: 20/02/2014, 12:20

... a very large market for OCR related applications. OCR error correction can be thought of a spelling correction problem. Although spelling correction has been studied for several decades (Kukich, ... spelling correction, it is rea- sonable to generate correction candidates by edit distance for words longer than 2 characters since the number of correction candidates would be small. However, for ... correct word for X. Therefore, for two character words, we sort the list of all one edit distance words by P(W)P(X I W), and select the top-k words as the correction candidates. For example,...

Ngày tải lên: 20/02/2014, 18:20

... curve for error correction 0 0.2 0.4 0.6 0.8 1 0 0.2 0.4 0.6 0.8 1 SVM MAXENT CRF data includes 16,308 verb phrases, of which 1,072 (6.6%) contain tense/aspect errors. We used Stan- ford ... 2 Tense/Aspect Error Corpus Developing a high-quality tense and aspect error correction system requires a large corpus annotated with tense/aspect errors. However, existing anno- tated ... label. 8 http://nlp.stanford.edu/software/ lex-parser.shtml 9 http://www.csie.ntu.edu.tw/~cjlin/ liblinear/ 10 http://crfpp.sourceforge.net/ 5 Results Figures 1 and 2 show the Precision-Recall curves of the error...

Ngày tải lên: 07/03/2014, 18:20

... samples and 68 error codes, only 30 codes occur more than 25 times in the cor- pus, and only 21 codes occur more than 50 times. Most of our insignificant differences come from error codes with very ... “blame” for detected errors on different con- stituents. In order for ICICLE to deliver relevant instruction, it needs to determine which of these possibilities most likely reflects the actual perfor- mance ... those for the profile to which the user belongs. However, up until now we have only gathered information on the errors commit- ted by our learner population, and thus we still have no information...

Ngày tải lên: 17/03/2014, 07:20

... 37–40, Columbus, Ohio, USA, June 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 ... Li, 2007), developed for document ranking in informa- tion retrieval. Our main difference lies in Lines 4-7 in Algorithm 1: AdaRank proposes a simple closed form solution for α and combines only ... Train- ing and evaluating error minimization rules for SMT. In ACL Workshop on Building/Using Parallel Texts. J. Xu and H. Li. 2007. AdaRank: A boosting algorithm for information retrieval. In...

Ngày tải lên: 23/03/2014, 17:20

... 353–358, Uppsala, Sweden, 11-16 July 2010. c 2010 Association for Computational Linguistics Using Parse Features for Preposition Selection and Error Detection Joel Tetreault Educational Testing Service Princeton NJ, ... and Lucy Vanderwende. 2008. Using con- textual speller techniques and language modelling for ESL error correction. In Proceedings of the In- ternational Joint Conference on Natural Language Processing, ... well-formed text. In the error detection task, the improvement is less marked. Neverthe- less, examination of parser output shows the parse features can be extracted reliably from ESL data. For...

Ngày tải lên: 30/03/2014, 21:20

... occurs for all bare noun phrases (ie. without determiners). This kind of error cannot be accurately identified by us- ing just word or POS n-grams, we need to use the actual parse tree. 5.2 Error Correction Egad ... provides much useful information for subsequent process- ing. However, this is generally at the cost of re- duced coverage, due both to the difficulty of pro- viding analyses for all phenomena, and ... well Egad 5 For example, /0010 / is fully specified. /00 / marginalizes two general characteristics points to the most significant errors, and how it can help reduce development time. 5.1 Error Mining Table...

Ngày tải lên: 31/03/2014, 00:20

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Ngày tải lên: 20/06/2014, 07:20

Ngày tải lên: 21/06/2014, 00:20