Semi - Supervised learning

Ngày tải lên: 25/04/2013, 19:30

Ngày tải lên: 27/04/2013, 21:02

... data, semi- supervised approaches improve generalization accuracy. Semi- supervised models such as Ando and Zhang (2005), Suzuki and Isozaki (2008), and Suzuki et al. (2009) achieve state-of-the-art ... near state-of-the-art, supervised NLP system, and improve its accuracy by including word representations as word features. This technique for turning a supervised approach into a se...

Ngày tải lên: 20/02/2014, 04:20

... 01003 mccallum@cs.umass.edu Abstract In this paper, we propose a novel method for semi- supervised learning of non- projective log-linear dependency parsers using directly expressed linguistic prior knowledge ... a feature-rich discriminative model. Conventional semi- supervised learning requires parsed sentences. Kate and Mooney (2007) and McClosky et al. (2006) both use modified fo...

Ngày tải lên: 20/02/2014, 07:20

... graph-based semi- supervised learning for the question-answering (QA) task for ranking candidate sentences. Us- ing textual entailment analysis, we obtain entailment scores between a natural lan- guage ... rep- resenting high-level attributes of the en- tailment problem such as sentence struc- ture matching, question-type named-entity matching based on a question-classifier, etc. We imple...

Ngày tải lên: 20/02/2014, 07:20

... has shown how to apply GE criteria to maximum en- tropy classifiers. In section 4, we extend GE crite- ria to semi- supervised learning of linear-chain con- ditional random fields, using conditional ... 71.5% - - - GE/Heuristic 68.3% 72.6% 76.3% 80.1% GE/Sampled 73.0% 74.6% 77.2% 80.5% Table 4: Accuracy of semi- supervised learning methods comparing the effects of (1) a heur...

Ngày tải lên: 20/02/2014, 09:20

... useful for Machine Trans- lation tools and for Computer-Assisted Language Learning tools. In this paper we propose a supervised and a semi- supervised method to disambiguate par- tial cognates between ... COG (cognate) and FF (false- friend). 5.1 Supervised Method For both the supervised and semi- supervised method we used the bag-of-words (BOW) ap- proach of modeling conte...

Ngày tải lên: 20/02/2014, 12:20

... class. This line of work has evolved to incorporate ideas from graph-based semi- supervised learning in extrac- tion from semi- structured text (Wang and Cohen, 2007), and in combining extractions ... the YAGO graph. Bob Dylan film-music_contributor-name Johnny Cash people-person-name Isaac Newton Bob Dylan film-music_contributor-name Johnny Cash people-person-name Isaac Newton has_attr...

Ngày tải lên: 07/03/2014, 22:20

Ngày tải lên: 08/03/2014, 01:20

... Soresen (2004) Tree kernel based 81.2 51.8 63.2 67.1 35.0 45.8 - - - Kambhatla (2004) Feature based, Maxi- mum Entropy - - - - - - 63.5 45.2 52.8 Zhou et al. (2005) Feature based,SVM 84.8 66.7 ... information among un- labeled examples is not fully explored in this boot- strapping process. Recently a promising family of semi- supervised learning algorithm is i...

Ngày tải lên: 08/03/2014, 02:21