Báo cáo khoa học: "Supervised Noun Phrase Coreference Research: The First Fifteen Years" pptx
Báo cáo khoa học: "Supervised Noun Phrase Coreference Research: The First Fifteen Years" pptx
... as we movedown the tree. Specifically, based on the corefer-ence decisions it has made in the first i− 1 levels of the tree, the algorithm determines at the ith levelwhether the ith NP should ... coordinate the pairwise classifi-cation decisions made by the model and constructa coreference partition.Another issue that surrounds the acquisition of the mention-pair model concerns the way ... complete par-tition of the NPs, and the goal is to search for the leaf node that contains the most probable partition. The search starts at the root, and a partitioning of the NPs is incrementally...
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Báo cáo khoa học: "Adding Noun Phrase Structure to the Penn Treebank" ppt
... NPs to return to the user. If the parser never generates the correctsub-NP structure, then the system may return a non-sensical answer even though the correct dominating noun phrase has been ... original set. First, we extracted three word noun sequencesfrom all the ambiguous NPs. If the last three chil-dren are nouns, then they became an example in ourdata set. If there is a NML ... with the dependency model outperforming the adjacency model on all measures. The bigramprobability scores highest out of all the measures,while the score performed the worst. The results on the...
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Báo cáo khoa học: "Learning Noun Phrase Anaphoricity to Improve Coreference Resolution: Issues in Representation and Optimization" ppt
... of the overall performanceof the coreference system. On the other hand, if the model is too conservative, then only a small fractionof the truly non-anaphoric NPs will be identified,and so the ... that the recall of the coreference system would increase with the con-servativeness parameter. The reason is that we haveno control over whether or how the anaphoricityfeature is used by the coreference ... 14853-7501yung@cs.cornell.eduAbstractKnowledge of the anaphoricity of a noun phrase might be profitably exploited by a coreference sys-tem to bypass the resolution of non-anaphoric noun phrases. Perhaps surprisingly,...
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Báo cáo khoa học: "Parsing Noun Phrase Structure with CCG" potx
... for the child nodes, depending onwhether neither, the left, the right or both nodes span the entire NE. As an example, if the Air Forceconstituent were being joined with contract, then the ... combination with the parentnode or the child nodes. For the former, one fea-ture is active when the node spans the entire entity,and another is active in other cases. Similarly, thereare four ... /N N + NORPas the head of the constituent is Europeans.In the same way, we implement features that com-bine the grammar rule with the child nodes. Thereare already features in the model describing...
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Báo cáo khoa học: "Coordinate Noun Phrase Disambiguation in a Generative Parsing Model" doc
... and the head of the phrase is (usu-ally) the rightmost noun in the phrase. Thus, whenn2 is immediately followed by another noun the de-fault is to assume nominal modifier coordination and the ... which, as in the above example, cover the samespan of words and differ only in whether the coordi-nate noun phrase is flat as in (c) or structured as in(d), the choice of head for the phrase is ... far the worst performance of all depen-dency types.Take the phrase busloads of executives and theirwives (taken from the WSJ treebank). The coordi-nating conjunction (CC) and and the noun phrase their...
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Báo cáo khoa học: "A Hierarchical Phrase-Based Model for Statistical Machine Translation" pptx
... these problems thatdoes not interfere with the strengths of the phrase- based approach, but rather capitalizes on them: sincephrases are good for learning reorderings of words,we can use them ... S1X2(13)S → X1, X1(14)These give the model the option to build only par-tial translations using hierarchical phrases, and thencombine them serially as in a standard phrase- basedmodel. For ... integrate them into the rule weights,so that the whole model is a weighted synchronousCFG. The word penalty is easy; the language modelis integrated by intersecting the English-side CFGwith the...
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Báo cáo khoa học: "Development of Computational Linguistics Research: a Challenge for Indonesia" pptx
... conducting their linguisticsresearches as stated in Muhadjir (1995), onlyfew of them really make use of the technology.While, on the other hand, most computerscientists tend to use the practical ... analysis ofIndonesian newspapers. There was also similarwork conducted the MMTS project (will bedescribed later, in the following section);however, the result of the group’s corpusanalysis was ... of the Bahasa Indonesia (the Indonesian nationallanguage) to enable us develop the neededcomputer applications that will help us manageinformation intelligently.However, until recently, there...
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Tài liệu Báo cáo khoa học: "Identifying Noun Product Features that Imply Opinions" pdf
... the word “are”. Among these extracted opinion words for the feature noun, if some belong to the positive opinion lexicon and some belong to the negative opinion lexicon, we conclude the noun ... real-life datasets of reviews. Table 1 shows the domains (based on their names) of the datasets, the number of sentences, and the number of noun features. The first two datasets were obtained from ... (1997) did the first work to tackle the problem for adjectives using a corpus. The approach exploits some conjunctive patterns, involving and, or, but, either-or, or neither-nor, with the intuition...
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Tài liệu Báo cáo khoa học: "Arabic Cross-Document Coreference Detection" doc
... per-formed between the baseline system’s list and the lists produced by the other systems to create listsof pairs that include the information in the base-line. However, each of the following systems’outputs ... test in the English space using the projected enti-ties (A, B). The exact string match testis done exactly as in the baseline system,using the set of longest named entities intheir respective ... consider the words in the mention’s neighborhood. The con-text of a mention can be defined as the words thatsurround the mention in a window of n (50 in ourexperiments) tokens centered by the mention....
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Tài liệu Báo cáo khoa học: "Machine Learning for Coreference Resolution: From Local Classification to Global Ranking" ppt
... each pre-selected coreference system. The feature value is 1 if the corresponding coreference system generated the candidate partitionand 0 otherwise. These features enable the learnerto learn ... non-coreferent noun phrases. Hence, the numberof instances created by this method is quadratic in the number of NPs in the associated text. The largenumber of instances can potentially make the train-ing ... exists, then NP is assumed to benon-anaphoric (i.e., no antecedent is selected).On the other hand, the best-first clustering al-gorithm selects as the antecedent of NP the clos-est NP with the...
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