Báo cáo khoa học: "Unsupervised Discovery of Rhyme Schemes" pdf
Báo cáo khoa học: "Unsupervised Discovery of Rhyme Schemes" pdf
... work on finding rhyme schemes.3 Finding Stanza Rhyme SchemesA collection of rhyming poetry inevitably containsrepetition of rhyming pairs. For example, the wordtrees will often rhyme with breeze ... +Ii,rj<i:ri=rjθxi,xj/wθw,xi(2)3While the number of rhyme schemes of length n is tech-nically the number of partitions of an n- element set (the Bellnumber), only a subset of these are typically used.78P ... Association for Computational LinguisticsUnsupervised Discovery of Rhyme SchemesSravana ReddyDepartment of Computer ScienceThe University of ChicagoChicago, IL 60637sravana@cs.uchicago.eduKevin...
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Báo cáo khoa học: "Unsupervised Discovery of Persian Morphemes" docx
... is the left part of word, RP is the right part of it, Len (p) is the length of part P (number of characters), freq(p) is the frequency of part P in corpus, WN is the number of words (corpus ... length of the corpus. Given a probabil-istic model of the corpus, the description length is the sum of the most compact statement of the model expressible in some universal language of algorithms, ... length of the optimal com-pression of the corpus, when we use the prob-abilistic model to compress the data. The length of the optimal compression of the corpus is the base 2 logarithm of the...
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Báo cáo khoa học: "Unsupervised Discovery of Domain-Specific Knowledge from Text" pptx
... Research with a Series of Reading Tasks. In Proceedings of LREC 2010.Fabian M. Suchanek, Gjergji Kasneci, and GerhardWeikum. 2007. Yago: a core of semantic knowledge.In Proceedings of the 16th international ... number of classes per entity is 6.87.The total number of distinct classes for entities is63, 942. This is a huge number to model in our statespace.1Instead of manually choosing a subset of theclasses ... task of finding thebest set to the model.We note, however, that the distribution of classesfor each entity is highly skewed. Due to the unsuper-vised nature of the extraction process, many of...
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Báo cáo khoa học: "Unsupervised Discovery of Generic Relationships Using Pattern Clusters and its Evaluation by Automatically Generated SAT Analogy Questions" pot
... are often beingmanifested by several different patterns.In this paper, unlike the majority of studies thatuse patterns in order to find instances of given rela-tionships, we use sets of patterns ... sets of pairs into several clusters, whereeach cluster corresponds to one of a known set of re-lationship types. Their classification setting is thusvery different from our unsupervised discovery ... length of a pattern is limited bywindow size). A pattern example is ‘such X as Yand’. During this stage we only allow single wordsto be in CW slots2.3.3 Discovery of Target WordsFor each of...
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Tài liệu Báo cáo khoa học: "Unsupervised Segmentation of Chinese Text by Use of Branching Entropy" pdf
... Proceedings of the COLING/ACL 2006 Main Conference Poster Sessions, pages 428–435,Sydney, July 2006.c2006 ... Computational Linguistics428 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 1 2 3 4 5 6 7 8entropyoffset429430431432 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0.55 0.6 0.65 0.7 0.75...
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Báo cáo khoa học: "Unsupervised Learning of Acoustic Sub-word Units" pot
... Franceemmanuel.dupoux@gmail.comAbstractAccurate unsupervised learning of phonemes of a language directly from speech is demon-strated via an algorithm for joint unsupervisedlearning of the topology and parameters of a hidden Markov model ... im-provement in the efficacy of the SSS algorithm asdescribed in Section 2. It is based on observingthat the improvement in the goodness of fit by upto two consecutive splits of any of the current HMMstates ... eigen-vector of Σsand 0 < 1 is typically 0.2.3. Re-estimate all parameters of this (overgrown)HMM. Gather the Gaussian sufficient statisticsfor each of the 4N states from the last pass of re-estimation:...
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Báo cáo khoa học: "Unsupervised Learning of Arabic Stemming using a Parallel Corpus" pot
... indicates animprovement of 22-38% in average pre-cision over unstemmed text, and 96% of the performance of the proprietary stem-mer above.1 IntroductionStemming is the process of normalizing word ... two examples use the joint probability of the prefix and suffix, with a smoothing back-off(the product of the individual probabilities). Scor-ing models of this form proved to be poor perform-ers ... a set of Arabic documents and an Arabicquery, find a list of documents relevant to the query,and rank them by probability of relevance.We used the TREC 2002 documents (severalyears of AFP...
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Báo cáo khoa học: "Unsupervised Decomposition of a Document into Authorial Components" pdf
... One of the advantages of using biblical litera-ture is the availability of a great deal of manual annotation. In particular, we are able to identify synsets by exploiting the availability of ... that’s the nature of the clustering algorithm, but in fact are not part of what we might think of as the core of either cluster. Informally, we say that a unit is in the core of its cluster if ... approach to our unsupervised ver-sion of the problem would be to segment the text (if necessary), represent each of the resulting units of text as a bag -of- words, and then use clustering algorithms...
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Báo cáo khoa học: "Unsupervised Part-of-Speech Tagging Employing Efficient Graph Clustering" ppt
... All of them employ a syntactic version of Harris’ distributional hypothesis: Words of similar parts of speech can be observed in the same syntactic contexts. Contexts in that sense are often ... state -of- the-art approaches, the kind and number of different tags is generated by the method itself. We compute and merge two partitionings of word graphs: one based on context similarity of ... running in the danger of joining two unrelated clusters because of too many ambiguous words that connect them. After step 3, we already have a partition of a subset of our target words. The...
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Báo cáo khoa học: "Automatic Discovery of Named Entity Variants – Grammar-driven Approaches to Non-alphabetical Transliterations" pptx
... proposal has great po-tential of increasing robustness of future NER workby enabling discovery of new and unknown translit-erated NE’s.Our study shows that resolution of transliteratedNE variations ... Taiwanshukai@gmail.comAbstractIdentification of transliterated names is aparticularly difficult task of Named EntityRecognition (NER), especially in the Chi-nese context. Of all possible variations of transliterated ... Proceedings of the ACL 2007 Demo and Poster Sessions, pages 153–156,Prague, June 2007.c2007 Association for Computational LinguisticsAutomatic Discovery of Named Entity Variants–...
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