Báo cáo khoa học: "Building a Large Knowledge Base for a Natural Language System" doc
Báo cáo khoa học: "Building a Large Knowledge Base for a Natural Language System" doc
... arbitrarily detailed world knowledge and that a sophisticated natural language sys- tem must have a large knowledge base. But heretofore, the knowledge bases in natural language systems have either ... Building a Large Knowledge Base for a Natural Language System Jerry R. Hobbs Artificial Intelligence Center SRI International and Center for the Study of Language and Information Stanford ... University Abstract A sophisticated natural language system requires a large knowledge base. A methodology is described for con- structing one in a principled way. Facts are selected for the knowledge...
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Báo cáo khoa học: "Combining Multiple, Large-Scale Resources in a Reusable Lexicon for Natural Language Generation" pptx
... manually format the re- source) so as to get reliable and usable results; semi-automatic rather than fully automatic ap- proach is adopted to ensure accuracy; corpus analysis based information ... paraphrases are defined at semantic level. For example, '~rhe base plan called for one fiber ac- tivation at CSA 2100" and "There was one fiber activation at CSA 2100" are ... semantic para- phrases in PlanDOC domain. At the lexical level, we use synonymous words from WordNet to generate lexical paraphrases. A sample lexi- cal paraphrase for "The base plan called...
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Tài liệu Báo cáo khoa học: "Demonstration of the UAM CorpusTool for text and image annotation" docx
... features='participant;human' state='active'/> <segment id='2' start='207' end='214' features='participant;organisation;company' state='active'/> ... developed to facilitate the human annotation of text. These have been necessary where software for automatic annotation has not been available, e.g., for linguistic patterns which are not easily identi-fied ... 3. An important feature of the tool is that any change to the coding scheme is automatically propagated throughout all files annotated at this layer. For instance, if a feature is renamed...
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Báo cáo khoa học: "Bayesian Unsupervised Word Segmentation with Nested Pitman-Yor Language Modeling" doc
... Pitman-Yor Language ModelingDaichi Mochihashi Takeshi Yamada Naonori UedaNTT Communication Science LaboratoriesHikaridai 2-4, Keihanna Science City, Kyoto, Japan{daichi,yamada,ueda}@cslab.kecl.ntt.co.jpAbstractIn ... tran-scripts and standard datasets for Chineseand Japanese word segmentation. Ourmodel is also considered as a way to con-struct an accurate word n-gram language model directly from characters ... has an ad-ditional advantage in that we can accommodatehigher-order relationships than bigrams, particu-larly trigrams, for word segmentation.54.2 Forward-Backward inferenceThen, how can...
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Báo cáo khoa học: "Orthogonal Negation in Vector Spaces for Modelling Word-Meanings and Document Retrieval" ppt
... cla im that any formof negation is likely to remove relevant as wellas irrelevant results, the damage done was onlyaround 3% for post-retrieval filtering and 25% for constant and vector negation.• ... widespread use in informationretrieval (Salton and McGill, 1983; Baeza -Yates and∗This research was supported in part by the ResearchCollaboration between the NTT Communication ScienceLaboratories, ... thesame as d · (a − λb), it is computationally more ef-ficient to treat a − λb as a single vector. This isexactly what vector negation accomplishes, and alsodetermines a suitable value of λ from a...
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Báo cáo khoa học: " THE KEY TO THE SELECTION PROBLEM IN NATURAL LANGUAGE GENERATION" ppt
... pending plans for utterances. We argue that in domains where salience information is already available, such thorough deliberations are often unnecessary, and that a straight-forward enumeration ... speaker's knowledge of their language consist 9 in large part of a catalog of wnat might be saia and the effects it is likely to have on the audience; and that, accordingly, language generation ... salience states that a given person looking at a given picture in a given context assigns a salience (an ordering, rather than a numeric value) to each object as a 130 natural and automatic part...
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Báo cáo khoa học: "Optimal and Syntactically-Informed Decoding for Monolingual Phrase-Based Alignment" doc
... USA{kapil,kathy}@cs.columbia.eduAbstractThe task of aligning corresponding phrasesacross two related sentences is an importantcomponent of approaches for natural language problems such as textual inference, paraphrasedetection ... pre-sented a phrase-based monolingual aligner for NLI(MANLI) that has been shown to significantly out-perform a token-based NLI aligner (Chambers etal., 2007) as well as popular alignment techniquesborrowed ... the aligner to properly link paraphrasessuch as death penalty and capital punishment by ex-ploiting lexical resources.3.1 DatasetMANLI was trained and evaluated on a corpus ofhuman-generated...
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Báo cáo khoa học: "Left-to-Right Target Generation for Hierarchical Phrase-based Translation" doc
... Target Generation for Hierarchical Phrase-basedTranslationTaro Watanabe Hajime Tsukada Hideki Isozaki2-4, Hikaridai, Seika-cho, Soraku-gun,Kyoto, JAPAN 619-0237{taro,tsukada,isozaki}@cslab.kecl.ntt.co.jpAbstractWe ... against a phrase-based translationsystem.1 IntroductionIn a classical statistical machine translation, a for- eign language sentence fJ1= f1, f2, fJis trans-lated into another language, ... be able to simulate a phrase-based translation model with various constraints.This reduction is rather natural in that a finite statetransducer, or a phrase-based model, is a subclassof a synchronous-CFG.Figure...
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Báo cáo khoa học: "Combining Distributional and Morphological Information for Part of Speech Induction" doc
... of languages. A second form of evaluation is to use some datathat has been manually or semi-automatically an-notated with part of speech (POS) tags, and to usesome information theoretic measure ... parts-of-speech, that is to say lexicalcategories corresponding to traditional notions of, for example, nouns and verbs. As is often the casein machine learning of natural language, there aretwo ... ratios range from 12.1 for English to4.84 for Hungarian. The tags used are extremelyfine-grained, and incorporate a great deal of infor-mation about case, gender and so on — in Hun-garian...
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Tài liệu Báo cáo khoa học: "Integration of Large-Scale Linguistic Resources in a Natural Language Understanding System" pdf
... into our natural language understanding system. Client- server architecture was used to make a large volume of lexical information and a large knowledge base available to the system at development ... semantic analysis, and pragmatic analysis. Each stage has been designed to use linguistic data such as the lexicon and grammar, which are maintained separately from the engine, and can easily ... Integration of Large- Scale Linguistic Resources in a Natural Language Understanding System Lewis M. Norton, Deborah A. Dahl, Li Li, and Katharine P. Beals Unisys Corporation 2476 Swedesford Road...
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