Báo cáo khoa học: "Reducing semantic drift with bagging and distributional similarity" pdf

... ACL and the 4th IJCNLP of the AFNLP, pages 396–404, Suntec, Singapore, 2-7 August 2009. c 2009 ACL and AFNLP Reducing semantic drift with bagging and distributional similarity Tara McIntosh and ... and WMEB using just the hand-picked seeds (S hand ) and 50 sample super- vised bagging (S gold BAG). Bagging with samples from S gold successfully increased the perform...

Ngày tải lên: 08/03/2014, 00:20

... Annual Meeting of the ACL and the 4th IJCNLP of the AFNLP, pages 91–99, Suntec, Singapore, 2-7 August 2009. c 2009 ACL and AFNLP Learning Semantic Correspondences with Less Supervision Percy ... (Ge and Mooney, 2005; Zettlemoyer and Collins, 2005; Zettlemoyer and Collins, 2007; Lu et al., 2008). However, this degree of supervision is unrealistic for modeling human language acqu...

Ngày tải lên: 17/03/2014, 01:20

... 1966). Hatzivassiloglou and McKeown (1997) focused on conjunctive expressions such as “simple and 133 well-received” and “simplistic but well-received”, where the former pair of words tend to have the same semantic ... method for ex- tracting semantic orientations of words with boot- strapping. The semantic orientation of a word is determined on the basis of its gloss, if any of...

Ngày tải lên: 20/02/2014, 15:20

... bitexts, and one on two billion words of English. These were smoothed using modified Kneser-Ney (Chen and Goodman, 1998) and stored using randomized data structures similar to those of Talbot and Brants (2008). The ... similar to the expanded set recently used for Hiero (Chiang et al., 2009), but with bigram features (source and target word) instead of trigram features (source and...

Ngày tải lên: 07/03/2014, 22:20

... Krit1 F1 and F2 to F3 subdomains based on homology with radixin F1 in complex with IP3 and with talin F2 to F3 (Fig. 1B). These models displayed very stable secondary structures and energies with respect ... fusions in (A) were immunoblotted with GST antibodies. GST fusions in (B) and (C) were stained with Ponceau Red. Krit1-NTer and ICAP-1 were immunoblotted with His-...

Ngày tải lên: 16/03/2014, 05:20

... distribution in texts, and comparing those distributions in a vector space model. One of the best known models in this respect is latent semantic analysis — LSA (Landauer and Du- mais, 1997; Landauer et ... set has been part of speech tagged and lemmatized with the Stanford Part-Of- Speech Tagger (Toutanova and Manning, 2000; Toutanova et al., 2003) and parsed with Malt- Parse...

Ngày tải lên: 23/03/2014, 16:20

... Design To perform our experiments with word-level aligne- ments we modified GIZA++, an existing and freely available implementation of the IBM models and HMM variants (Och and Ney, 2003). Our modifi- cations ... IBM Models trained with word-aligned data 4, 3 and evaluated their AERs. Table 1 gives align- ment error rates when training on 500, 2000, 8000, and 16000 sentence pairs f...

Ngày tải lên: 31/03/2014, 03:20

... shallow and partial interpretation. Simi- lar approaches are proposed in, for instance, the work on flexible parsing (Carbonell and Hayes, 1987) and in speech systems (cf. (Sj51ander and Gustafson, ... database, T, and the information describ- ing the background system's capabilities, S, 2) information from dialogues collected with users of the system, and 3) common s...

Ngày tải lên: 31/03/2014, 04:20

... Linguistics Unsupervised Semantic Role Induction with Global Role Ordering Nikhil Garg University of Geneva Switzerland nikhil.garg@unige.ch James Henderson University of Geneva Switzerland james.henderson@unige.ch Abstract We ... syntactic and semantic features could provide clues to the semantic role label of a constituent, non- local features such as predicate voice could provide...

Ngày tải lên: 19/02/2014, 19:20

... Regarding dependency parsing of the English PTB, currently Koo and Collins (2010) and Zhang and Nivre (2011) hold the best results, with 93.0 and 92.9 unlabeled attachment score, respectively. Both ... for comparison with the state- of-the-art, and we followed the usual train-test split. The Semcor/PTB intersection contains both gold-standard sense and parse tree annotati...

Ngày tải lên: 17/03/2014, 00:20