Tài liệu Báo cáo khoa học: "Guided Learning for Bidirectional Sequence Classification" ppt

... our learning algorithm is the strategy used to select samples for training. In general, this novel learning framework lies be- tween supervised learning and reinforcement learn- ing. Guided learning ... the search space is too large in bidirectional search, if we do not use aggressive learning to constrain the samples for learning. With aggressive learning, the bidirection...

Ngày tải lên: 20/02/2014, 12:20

... systems adopting the standard machine learning approach, outperforming them by as much as 4–7% on the three data sets for one of the performance metrics. 2 Related Work As mentioned before, our approach differs ... and Cardie (2002b) for details. Learning algorithms. We consider three learning algorithms, namely, the C4.5 decision tree induction system (Quinlan, 1993), the RIPPER ru...

Ngày tải lên: 20/02/2014, 15:20

... unseen for a given domain s, we are already performing an implicit form of smoothing (when computing the expected counts), since each docu- ment has a distribution over all topics, and therefore we ... model (Zhao and Xing, 2006), which uses a bilingual topic model for learning alignment. In our case, by building a topic distri- bution for the source side of the training data, we abst...

Ngày tải lên: 19/02/2014, 19:20

... ever-increasing numbers, making automated techniques for infor- mation extraction increasingly useful. Traditionally, most research effort has been directed towards “ob- jective” information, such as classification ... the upper one is for the original unsupervised classifier, and the lower is for the most successful unsuper- vised method. lect data for the complete set of WordNet syn-...

Ngày tải lên: 20/02/2014, 16:20

... major questions. 1. Is information extraction (IE) harder when learning the individual types of part-whole relations? That is, we determine whether the performance of state-of-the-art IE systems in learning ... types by enforcing semantical selectional restrictions, in the form of DOLCE on- tology (Gangemi et al., 2002) classes, on their en- tities. In NLP, information extraction (IE) tec...

Ngày tải lên: 20/02/2014, 04:20

... previous analysis for misspelling errors or for the lack of derivationally forms not coded in WordNet. As result, given the syntactic category c w ∈ {noun, verb, adj ective, adverb} and the lemmatized form ... transformations T applied over syntactic and semantic interpretations. The entailment between T and H is detected when there is a transformation r ∈ T so that sim(r(T ), H) > α....

Ngày tải lên: 20/02/2014, 12:20

... argued for a dependency formal- ism called Discontinuous Grammar and annotated a large set of Danish sentences using this formal- ism to create the Danish Dependency Treebank (Kromann, 2003). The formalism ... algorithms for both projective and non-projective trees. When combined with a discriminative online learning al- gorithm and a rich feature set, these models pro- vide state-of-th...

Ngày tải lên: 22/02/2014, 02:20

... with easy access to information on glyc- ogenes. In the GGDB, the information on each glyco- gene is stored in XML format: gene names (gene symbols), enzyme names, DNA sequences, tissue distri- bution ... malignant transformation. Lectin microarray – a powerful technology for selection of lectins for cancer glyco-biomarkers The lectin microarray system is an emerging technique for analy...

Ngày tải lên: 16/02/2014, 08:20

... (2001) The Mycobacterium tubercu- losis pks2 gene encodes the synthase for the hepta- and octamethyl-branched fatty acids required for sulfolipid synthesis. J Biol Chem 276, 16833–16839. 78 Lam TH, ... functions as a regulator for differen- tiation in Streptomyces coelicolor. Mol Microbiol 30, 107–119. 94 Vidwans SJ, Ireton K & Grossman AD (1995) Possible role for the essential GT...

Ngày tải lên: 16/02/2014, 15:20

... by genes that code for the major cellulosomal cellulase Cel48F and nine other dockerin-containing enzymes [15]. Cellulases encoded by the cip-cel cluster are essential for the formation of efficient ... fractions, except for F1, which was found to be approximately fivefold more active than the others. The cellulosomes present in fractions F1 and F6 therefore have the most efficient enzymes...

Ngày tải lên: 18/02/2014, 08:20