Tài liệu Báo cáo khoa học: "Coreference for Learning to Extract Relations: Yes, Virginia, Coreference Matters" ppt

... Association for Computational Linguistics:shortpapers, pages 288–293, Portland, Oregon, June 19-24, 2011. c 2011 Association for Computational Linguistics Coreference for Learning to Extract Relations: ... incorrect (e.g. ‘X visited Y’ for hasBirthPlace). 7 Figure 1: Approach to learning relations We ran this system in two versions: –Coref has no access to c...

Ngày tải lên: 20/02/2014, 04:20

... somewhat effective for relation extraction. This suggests that structured syntactic information has good predication power for rela- tion extraction and the structured syntactic in- formation can ... methods and significantly out- performs previous two dependency tree ker- nels for relation extraction. 1 Introduction The goal of relation extraction is to find various predefined s...

Ngày tải lên: 20/02/2014, 12:20

... source benefits the performance of Arabic -to- English SMT. The use of similar techniques for English -to- Arabic SMT requires recombination of the target side into valid surface forms, which is not ... recombined into a surface form. This proves to be a non-trivial challenge for a num- ber of reasons: 1. Morpho-phonological Rules: For example, the feminine marker ’p’ at the end of a w...

Ngày tải lên: 20/02/2014, 09:20

... indirect methods for leveraging prior knowledge can be cumbersome and unintuitive for a non-machine -learning expert. This paper proposes a method for directly guid- ing the learning of dependency ... which we obtain accuracy comparable to supervised learning with tens to hundreds of complete parsed sentences. 2 Related Work This work is closely related to the prototype- driv...

Ngày tải lên: 20/02/2014, 07:20

... fully instantiated forms for fixed and body- anchored signs, however others are only partially in- stantiated forms for directional verbs and forms of modulation of lexical items. For nominal oriented signs, ... is used to associate pronouns with discourse referents, and reuse of nouns is used to imply co-reference to the same linguistic referent. Currently, the most common 50% CMU...

Ngày tải lên: 20/02/2014, 16:20

... the C a atoms of 436 corresponding residues) than between 4F2hc proteins and GH13 enzymes (1.67 A ˚ for 293 C a atoms) as well as rBATs and 4F2hc proteins mutually (1.80 A ˚ for 271 C a atoms). ... specificities and several thousand sequences [3,13,18] where, for example, it is still complicated to trace clearly the evolutionary history, even just for the animal a-amylase [39]. Concl...

Ngày tải lên: 18/02/2014, 13:20

... could be important for HSV-1 entry into RPE cells. Nectin-1 acts as the major receptor for HSV-1 entry into RPE cells To determine which receptors were important for HSV-1 entry into RPE cells, previously ... into corneal fibroblasts (CFs) leads to changes in actin cytoskeleton [29]. We also decided to examine whether cytoskeletal changes played any significant role in HSV-1 entry i...

Ngày tải lên: 18/02/2014, 14:20

... these papers clearly show domain-specific binding for M 2+ (M ¼ Zn, Cd) initially to the a domain, thereby lead- ing to formation of the M 4 a cluster prior to formation of the M 3 b cluster, demonstrating ... in independent tetra- thiolate sites, the choice for the third incoming metal ion would be to form a bridging interaction in the a domain or to form another independent tet...

Ngày tải lên: 19/02/2014, 00:20

... DENv. Much remains to be performed to achieve results suit- able for experimentation in clinical trials and to pro- duce a drug for blocking the DENv spread. To date, funding for a co-ordinated ... cofac- tor could be examined for a view to inhibitor develop- ment, and competitive inhibitors of the binding site might be able to inhibit the correct fold of the protease. At...

Ngày tải lên: 19/02/2014, 00:20

... l-glyceraldehyde to glycerol, whereas GLD2 catalyses the con- version of dihydroxyacetone to glycerol. Both enzymes are specific for NADPH as a cofactor. The properties of GLD2 are similar to those of ... d-galactonate and l-galactonate (in the d-galac- turonate pathway) are converted by a dehydratase to the corresponding 2-keto-3-deoxy sugar acid, which is then split by an aldolase...

Ngày tải lên: 19/02/2014, 06:20