Báo cáo khoa học: "Blocked Inference in Bayesian Tree Substitution Grammars" potx

... labels that allows us to bring the power of supervised ma- chine learning techniques to bear on this task. In this work we explore the possibility of automatically induced Tree Substitution Grammar ... features in a logistic regression model to per- form grammaticality detection. 3 Tree Substitution Grammars Tree Substitution Grammars are similar to Context Free Grammars, diff...

Ngày tải lên: 07/03/2014, 18:20

... gener- ating both the input and output, rather than the usual view of mapping input trees into output strings. A joint distribution allows us to model with a single machine both the input and ... is paired with in training. subtree variable w 1 , indicating that nothing is gener- ated in the MR. Rule 7 subsequently generates these subtrees as W symbols, marking corresponding lo- cations ....

Ngày tải lên: 19/02/2014, 19:20

... Decision Trees The vast context space in a language model man- dates the use of context clustering in some form. In n-gram models, the clustering can be represented as a k-ary decision tree of ... generalize the interpolation scheme which, as we show in Section 6, allows us to find a better solution in the face of the violation of Property 5. 4 Linear Interpolation We use linear in...

Ngày tải lên: 07/03/2014, 22:20

... conditions in the second inference above. S might also infer that A ham a goal of achieving not P. This is another possible inference. Which applies in a given setting is detemlned by the rating ... is simply that in the latter, S believes that A intended S to make the inferences above and deduce the goal (q,f). Thus the inferences applied above were actually augmented inferen...

Ngày tải lên: 08/03/2014, 18:20

... the inside probabil- ity of all possible trees derived from elementary tree t, having the indicated span over the input. This is decomposed into the contribution of each single node of t in ... 4.3 Off-line Equations In this section we derive equations for function Po~t,r introduced in §4.2 and deal with all re- maining cases of equations that cause infinite recursion. In so...

Ngày tải lên: 20/02/2014, 18:20

... binding of name segments path- A particular article of faith which has been very influen- tial in our work has been the conviction that well-designed programming languages (includ- ing ... syntactic abstrac- in unraveling the German separable Loctype is a rudimentary encoding of Actionsart. Subcat contains all the infor- mation necessary for mapping - 186- instances of ve...

Ngày tải lên: 22/02/2014, 10:20

... adjoin trees from the same set into each other. Thus, we can interpret TAGs with relaxed dominance as MC-TAGs, by identifying subtrees containing only ID relations with trees in an MC-TAG tree ... need to introduce an additional constraint: the foot node of the first tree (~1) in the tree set of Figure 3 has to dominate the root node of the second tree (~z) after adjoining th...

Ngày tải lên: 22/02/2014, 10:20

... parsing meth- ods, it could be relevant from the perspective of linguistic information processing, because it em- ploys lexical information in a more direct way. 1. Introduction Tree Adjoining ... follow- ing definition of TAGs. Definition 1 A Tree Adjoining Grammar (TAG) is a 5-tuple G=(VN, Vy, S, l, A), where VN is a finite set of non-terminal symbols, Vy is a finite set of t...

Ngày tải lên: 22/02/2014, 10:20

... carcinomas; IAP, inhibitor of apoptosis protein; JNK, c-Jun NH 2 -terminal kinase; KIP, kinase inhibitor proteins; MEK, MAPK ⁄ ERK kinase; MKK, MAPK kinase; MKP-1, mitogen-activated protein kinase ... Japan Introduction The epidermal growth factor receptor (EGFR) is com- posed of an extracellular ligand-binding domain, a transmembrane domain and an intracellular tyrosine kinase domain. The bi...

Ngày tải lên: 16/02/2014, 09:20

... (2008) Mapping alpha-helical induced folding within the intrinsically dis- ordered C-terminal domain of the measles virus nucleo- protein by site-directed spin-labeling EPR spectroscopy. Proteins 73, ... B, Finet S & Longhi S (2005) The intrinsically disordered C-terminal domain of the measles virus nucleoprotein interacts with the C-terminal domain of the phosphoprotein via two distinct...

Ngày tải lên: 18/02/2014, 04:20