Báo cáo khoa học: "A Unified Statistical Model for the Identification of English BaseNP" pptx

... A Unified Statistical Model for the Identification of English BaseNPEndong XunMicrosoft Research ChinaNo. 49 Zhichun Road Haidian District100080, China,i-edxun@microsoft.comMing ... China,cnhuang@microsoft.comAbstractThis paper presents a novel statistical model for automatic identification of English baseNP. It uses two steps: the N-best Part -Of- Speech (POS) tagging andbaseNP identification ... sequence of POS respectively asfollows:nnwwwwE121 −=nnttttT121 −=Where n is the number of words in the sentence, it is the POS tag of the word iw .Given E, the result of the baseNP...

Tài liệu Báo cáo khoa học: "A Unified Graph Model for Sentence-based Opinion Retrieval" pdf

... Except for the above queries, GORM per-formed well in most of the others. To further in-vestigate the effect of word pair, we summarized the top-5 word pairs with highest weight of 5 queries ... opinions in the document are indeed relevant to the target concerned. Therefore, we argue that existing information representation i.e. bag -of- word, cannot satisfy the information needs for opinion ... one of the comments to the docu-ment (Macdonald and Ounis, 2006). Therefore, in this paper we regard the information needs for opinion retrieval as relevant opinion. 2.2 Motivation of Our...

Tài liệu Báo cáo khoa học: "A Joint Statistical Model for Simultaneous Word Spacing and Spelling Error Correction for Korean" pdf

... dictionary, then the system assumes that the word has spelling er-rors. Then corrected candidate words are suggested by the system from the word dictionary, according to some metric to measure the ... algo-rithms define the problem as a task for determining whether to insert the delimiter between characters or not. Since the determination is made according to the characters, the algorithms ... to the beginning of the sentence. When Eumjeol/Eojeol candidates are selected, the algorithm prunes the candidates ac-cording to the accumulated probabilities, doing beam search. Once the...

Tài liệu Báo cáo khoa học: "A probabilistic generative model for an intermediate constituency-dependency representation" pptx

... in performance for the detection of junction structures, as well as for all other evaluation metrics, except for the BDS. The right graph in Figure 2 compares the F-score performance of the TDS-reranker ... the PCFG model outperforms the TDS-reranker both accord-ing to the BDS and the JDS.Unfortunately, the performance of the re-ranking model worsens progressively with the in-crease of k . We ... (BDS): the accuracy of de-tecting the correct boundaries of the blocks in the structure11.Block Attachment Score (BAS): the accuracy of detecting the correct governing block of eachblock in the...

Tài liệu Báo cáo khoa học: A systems biology approach for the analysis of carbohydrate dynamics during acclimation to low temperature in Arabidopsis thaliana doc

... experiment 2 for hexoses (black) and sucrose (grey).Doc. S1a. Model structure of C24.Doc. S1b. sbml format of model structure of C24.Doc. S2a. Model structure of Rsch.Doc. S2b. sbml format of model ... assessment of the trajec-tory of interconversion rates as a function of time of cold exposure, (b) comparison of the magnitudes of the various interconversion rates, and (c) lineup of the accessions ... & Stitt M (1993) Reg-ulation of the expression of rbcs and other photosyn-thetic genes by carbohydrates – a mechanism for the sink regulation of photosynthesis. Plant J 3, 817–828.29 Moore...

Tài liệu Báo cáo khoa học: a-Conotoxins as tools for the elucidation of structure and function of neuronal nicotinic acetylcholine receptor subtypes doc

... basis for structure-activity studies. The highselectivity of the a-conotoxins, together with the possibility of obtaining detailed information on their three dimen-sional structures and the relative ... structures and the relative ease of synthesis, makesthem particularly useful templates for the design of optimized synthetic peptides for the subtype characteriza-tion of nAChRs.AcknowledgementsA. ... snailtissues. The analysis of the DNA of different Conus specieshas already revealed a large number of a-conotoxinsequences [45] and the identiﬁcation of further speciﬁcnAChR ligands is likely. The...

Báo cáo khoa học: "A machine-learning approach to the identification of WH gaps" doc

... location of the gap as the lastchild of the parent VP.SBARQits associated gap; the meanings of the other fea-tures in Figure 3 should be clear.3.2 Classifier For our classifier model of WH ... either to recurse into one of the childnodes, or to predict the existence of a gap betweentwo of the overt child nodes. (Since the number of daughters in a subtree is limited, the number of classes ... argument for the necessity of transformations (Chomsky, 1957), and prompted the introduction of powerful mechanisms such as the SLASH feature of GPSG (Gazdar et al., 1985).To the extent that these...

Tài liệu Báo cáo khoa học: "A Localized Prediction Model for Statistical Machine Translation" ppt

... target word in the target clump of given the ﬁnal two words of the target clump of , (d) probability of predicting the rest of the words in the target clump of . The language model is trained ... with The set contains the block itself and the blocktarget phrases of blocks in that set might differ. Torestrict the number of alternatives further, the elements of are sorted according to the ... perceptron, the theoryjustiﬁes the standard practice of going through the train-ing data more than once. In the non-separable case, the method solves a regularized version of Eq. 8, which has the statistical...

Tài liệu Báo cáo khoa học: "A Hybrid Hierarchical Model for Multi-Document Summarization" ppt

... would improve the performance of these methods.Recent studies focused on the discovery of la-tent topics of document sets in extracting sum-maries. In these models, the challenges of infer-ring ... the hLDA models. The aim is to ob-tain the following samples from the posterior of: (i) the latent tree T , (ii) the level assignment z for all words, (iii) the path assignments c for all sen-tences ... paths only when they include similarconcepts, starting higher level topics of the tree. For SVR, we set  = 0.1 using the default choice,which is the inverse of the average of φ(f)Tφ(f)(Joachims,...

Tài liệu Báo cáo khoa học: "A Phonotactic Language Model for Spoken Language Identification" pptx

... that there is always a set of words which dominates most of the other words of the language in terms of their frequency of use. This is true both of written words and of spoken words. The ... dis-criminative space. There are two parameters that determine the acoustic vocabulary: the choice of acoustic token, and the choice of n-grams. In this paper, the former concerns the size of an acoustic ... further attested by our experiments in Section 4. 2.3 Language Classifier The task of a language classifier is to make good use of the LID cues that are encoded in the model lλ to hypothesize...

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