Báo cáo khoa học: "Improved Source-Channel Models for Chinese Word Segmentation" pdf

... presents a Chinese word segmen- tation system that uses improved source- channel models of Chinese sentence genera- tion. Chinese words are defined as one of the following four types: lexicon words, ... our word segmentation system. Square brackets indicate word boundaries. + indicates a morpheme boundary. • For lexicon words, word boundaries are de- tected. • For mo...

Ngày tải lên: 31/03/2014, 03:20

... types of infor- mation provide rich clues for building dialog mod- els (Grosz and Sidner, 1986). Dialog models can be built ofine (for dialog mining and summariza- tion), or online (for dialog ... to improved performance for any method. One utterance of context is best for shift-reduce and start-join; three is best for the connection path method. The shift- reduce method performs...

Ngày tải lên: 22/02/2014, 02:20

... fewer “documents”, “words”, and “topics”. To further improve efficiency, we also perform preprocess- ing (refer to Section 3.4 for details) before build- ing topic models for C R (q), where some ... the global context information as the topic features for better performing the WSD task. In Boyd-Graber et al. (2007), Latent Dirichlet with WordNet (LDAWN) is developed for simulta...

Ngày tải lên: 08/03/2014, 00:20

... words to the right and left of the verb, identified using POS tags, represented by has_narrow(snt, word_ position, word) : has_narrow(snt 1 , 1st _word_ left, mind). has_narrow(snt 1 , 1st _word_ right, ... the positions of the words, represented by has_narrow_trns(snt, word_ position, portuguese _word) : has_narrow_trns(snt 1 , 1st _word_ right, como). has_narrow_trns(snt 1 , 2nd _...

Ngày tải lên: 08/03/2014, 02:21

... pages 202–210, Athens, Greece, 30 March – 3 April 2009. c 2009 Association for Computational Linguistics Re-Ranking Models For Spoken Language Understanding Marco Dinarelli University of Trento Italy dinarelli@disi.unitn.it Alessandro ... concepts. Concepts are instantiated by sequences of words, therefore a Spoken Language Understanding (SLU) module finds the association between words...

Ngày tải lên: 08/03/2014, 21:20

... Meeting of the Association for Computational Linguistics, pages 856–864, Portland, Oregon, June 19-24, 2011. c 2011 Association for Computational Linguistics Rule Markov Models for Fast Tree-to-String ... r ′ 6 . The Chinese word yˇucan be translated as either a preposition with (leading to step 11) or a conjunction and (leading to step 11 ′ ). The word n-gram model does not ha...

Ngày tải lên: 17/03/2014, 00:20

... and French words, an empty English word, and an empty French word, • E comprises edges from the source to all the English words (including the empty one), edges from all the French words (including ... 2The empty words account for the fact that words may not be aligned with other ones, i.e. they are not exphcitely translated for example. 445 • from the source to the empty Engl...

Ngày tải lên: 17/03/2014, 07:20

... (possibly seen) word sequences. In the proposed models, only the words that ap- peared in the training dataset can be classified. An attempt to deal with the unseen words is an in- teresting task. For example, ... acquire the semantic orientations of words: desirable or undesirable (positive or neg- ative). For example, the word “beautiful” is pos- itive, while the word “dirty” is n...

Ngày tải lên: 17/03/2014, 22:20

... accuracy for both Italian and En- glish. Here, our goal is to apply a similar prior in a word- alignment model to the word- to -word transla- tion probabilities t( f | e). We leave the distortion models ... e)} separately for each En- glish word type e. The inputs to the PGD are the expected counts E[C(e, f )] and the current word- to- word conditional probabilities θ. We run PG...

Ngày tải lên: 30/03/2014, 17:20

... a fundamental problem for distributional models. Typically, distributional models compute a single “type” vector for a target word, which contains co- occurrence counts for all the occurrences ... state-of-the-art prototype models. We perform an in-depth error analysis to identify stable parameters for this class of models. 2 Related Work Among distributional models of wor...

Ngày tải lên: 30/03/2014, 21:20