Báo cáo khoa học: A mammalian monothiol glutaredoxin, Grx3, is critical for cell cycle progression during embryogenesis doc

... 5¢-GCCGGATCCATGACTGTGGTTGAAATAAAAAG-3¢ and the reverse primer 5¢-CCGGAGCTCTTACTGTAGAGCATGTTGGAAATA-3¢. Full-length cDNA of HsGrx3 and MmGrx3 were amplified byPCR using gene-specific primers. For ... specifically targetinghuman Grx3 sequences were purchased from Sigma-Aldrich. The human Grx3 shRNA1 sequence is 5¢-CCGGGCTCTTTATGAAAGGAAACAACTCGAGTTGTTTCCTTTCATAAAGAGCTTTTTG-3¢. The human Grx3shRNA2 ... Grx3shRNA2 sequence is 5¢ -CCGGGAACGAAGTTATGGCAGAGTTCTCGAGAACTCTGCCATAACTTCGTTCTTTTTG-3¢. Control cells were transfected with a control shRNAthat does not match any known human coding cDNA. Sta-ble...

Tài liệu Báo cáo khoa học: "A Ranking-based Approach to Word Reordering for Statistical Machine Translation" doc

... syntacticalfeatures. We evaluated our approach on large-scale Japanese-English and English-Japanesemachine translation tasks, and show that it cansigniﬁcantly outperform the baseline phrase-based ... tokens for both English andJapanese. This monolingual corpus is used to train a 4-gram language model for English and Japaneserespectively.5.2 Parsers For English, we train a dependency parser as ... fea-tures.We evaluated our approach on large-scaleJapanese-English and English-Japanese machinetranslation tasks, and experimental results show thatour approach can bring signiﬁcant improvements...

Tài liệu Báo cáo khoa học: "a Precision-Order-Recall MT Evaluation Metric for Tuning" pdf

... Precision-Order-Recall MT Evaluation Metric for Tuning Boxing Chen, Roland Kuhn and Samuel Larkin National Research Council Canada 283 Alexandre-Taché Boulevard, Gatineau (Québec), Canada J8X 3X7 ... third data condition is a French-to-English (fr-en). The parallel training data is from Canadian Hansard data, containing 59.3M word tokens. We used two LMs in loglinear combination: a 4-gram ... model and reordering models. There are about 62.6M target word tokens. The same two LMs are used for large data as for small data, and the same development (“dev”) and test sets are also used....

Tài liệu Báo cáo khoa học: "A study of Information Retrieval weighting schemes for sentiment analysis" doc

... used as the “gold standard”7.Documents are annotated at the document-level,rather than at the post level, making this data setsomewhat noisy. Additionally, the data set is par-ticularly large ... provide a small advantage in this dataset although the actual idf variant isn’t important,e.g. btc, bt′c, and okc all perform similarly. Theutilized tf variant also isn’t important, e.g. at′c(88.39%) ... functions adopted from Information Retrieval(IR) based on the standard tf.idf formula andadapted to the particular setting of sentiment anal-ysis can help classiﬁcation accuracy. We demon-strate...

Tài liệu Báo cáo khoa học: "A Comparison of Alternative Parse Tree Paths for Labeling Semantic Roles" ppt

... branches that are easiest to align with substrings that have been annotated with semantic role information? 3. What is the relative precision and recall per-formance of parse tree paths formulated ... predicate-argument relationship, and could be encoded in various ways that take ad-vantage of the additional semantic and lexical information that is provided. To compare traditional constituency ... indicate that Minipar B is competitive with Charniak and Stanford when only a small number of training examples is available. There is some evidence here that the performance of Minipar A would...

Tài liệu Báo cáo khoa học: "A Feature Based Approach to Leveraging Context for Classifying Newsgroup Style Discussion Segments" pptx

... demonstrates that we achieve a much greater impact on performance with carefully designed, automatically extractable context ori-ented features. In all cases we are able to achieve a statistically ... Learner, in all cases we evaluate com-binations of alternative history sizes (0 and 1) and alternative feature sets (base and base+AllContext). In our experimentation we have evaluated larger ... demonstrates for the three separate dimen-sions of a well established annotation scheme that novel thread based features have a greater and more consistent impact on classification performance....

Tài liệu Báo cáo khoa học: "A Limited-Domain English to Japanese Medical Speech Translator Built Using REGULUS 2" doc

... Hospital2500 Grant RoadMountain View, CA 94040vvandal3@aol.comHitoshi Isahara, Kyoko KanzakiCommunications Research Laboratory3-5 HikaridaiSeika-cho, Soraku-gunKyoto, Japan 619-0289{isahara,kanzaki}@crl.go.jpBeth ... patterns are derived from a single largelinguistically motivated uniﬁcation grammar; thusthe compile-time architecture is that of a linguisti-cally motivated system. Phrasal translation at ... very narrow do-main of a phrasebook translator, it has many desir-able properties. In particular, operations on semanticrepresentations typically manipulate lists rather thantrees. In a broad...

Báo cáo khoa học: "A Comparative Study of Parameter Estimation Methods for Statistical Natural Language Processing" potx

... estimators — ME estimation with L1 or L2 regularization, and AP — are in a near sta-tistical tie for first place. 1 Introduction Parameter estimation is fundamental to many sta-tistical approaches ... were trained discriminatively on an adaptation domain corpus (Encarta Encyclopedia). Thus, this forms a cross domain adaptation paradigm. This also implies that the portion of redundant features ... Estimation Methods for Statistical Natural Language Processing Jianfeng Gao*, Galen Andrew*, Mark Johnson*&, Kristina Toutanova* *Microsoft Research, Redmond WA 98052, {jfgao,galena,kristout}@microsoft.com...

Báo cáo khoa học: "A Re-examination of Machine Learning Approaches for Sentence-Level MT Evaluation" ppt

... corre-lations with human assessment are higher than stan-dard automatic evaluation metrics.2 MT EvaluationRecent automatic evaluation metrics typically framethe evaluation problem as a comparison ... text?) and fluency(does the translation sound natural in the target lan-guage?). These human assessment data are an in-valuable resource for measuring the reliability of au-tomatic evaluation ... classification task and the MTevaluation task empirically. They plotted the clas-sification accuracy and evaluation reliability for a number of classifiers, which were generated as a part of a greedy search...

Báo cáo khoa học: "A Meta-Level Grammar: Redefining Synchronous TAG for Translation and Paraphrase" doc

... edu. au Abstract In applications such as translation and paraphrase, operations are carried out on grammars at the meta level. This pa- per shows how a meta-grammar, defining structure at ... area, for example using S-TAG for English-Korean machine translation in a practical system (Palmer et al, 1998). In mapping between, say, English and French, there is a lexicalised TAG ... derivation trees. 3 S-TAG and Paraphrase Syntactic paraphrase can also be described with S-TAG (Dras, 1997; Dras, forthcoming). The manner of representing paraphrase in S-TAG is similar to...

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