Báo cáo khoa học: "Field comparison of transpiration, stomatal conductance and vulnerability to cavitation of Quercus petraea and Quercus robur under water stress" pptx

... of the wettest and deeper rooting layers. Original article Field comparison of transpiration, stomatal conductance and vulnerability to cavitation of Quercus petraea and Quercus ... — Water relations were analysed in adult oaks (Quercus petraea and Q robur) during a period of water shortage in a simplified lysimeter....

Ngày tải lên: 08/08/2014, 23:22

... Treebank offers the possibility of developing systems capable of accurate syntactic parsing, corpora of semantic role annotations open up new possibilities for rich textual understanding and integrated ... tree to move from the node of the verb (predicate) to the governing node of the constituent (argument). Palmer et al. (2005) demonstrate that utilizing the gold-stan...

Ngày tải lên: 20/02/2014, 12:20

... Foundation of China under grant number 60573187 and 60321002, and the Tsinghua-ALVIS Project co-sponsored by the National Natural Science Foundation of China under grant number 60520130299 and EU ... of a word are quite likely to be ranked close to the word itself. For instance, “作曲” and “曲家” are sub-bigrams of the word “作曲家(music composer)”, both the bi...

Ngày tải lên: 08/03/2014, 02:21

... Split A into two non-terminals, L and R, to represent genera- tors for left modifiers and right modifiers respec- tively. Then split L into ¯ L and ˆ L, for generators that produce straight and inverted ... violation. and Cherry (2003) used the notion of phrasal cohe- 146 A Comparison of Syntactically Motivated Word Alignment Spaces Colin Cherry Department of Computing Scien...

Ngày tải lên: 08/03/2014, 21:20

... Bottom-Up Strategies The principle of bottom-up parsing is to reduce a sequence of phrases whose types match the right- hand side of a grammar rule to a phrase of the type of the left-hand ... working of a chart parser is tightly centered around the production and manipulation of edges, and that much of its work can somehow be reduced to this. For example, a mea...

Ngày tải lên: 09/03/2014, 01:20

... are easier to obtain than full-text documents. Although his- torically difficult to obtain, the increased avail- ability of full-text articles motivates us to under- stand the nature of language ... text, and ta- bles using Java BreakIterator class to identify sentences and a Java implementation of the Por- ter Stemming algorithm (Porter, 1980) to identify terms. The...

Ngày tải lên: 17/03/2014, 04:20

... basidiomycete and filamentous ascomycete sequences (41 out of 84 total sequences) belong to the laccase sensu stricto clusters (Table 2). The other sequences of both basidiomycetes and filamentous ascomycetes ... uptake. Evolution of basidiomycetous laccases In order to understand more about the evolution of the basidiomycetous laccases, we subjected all sequences from the basid...

Ngày tải lên: 23/03/2014, 11:20

... Jurafsky, and Christopher D. Manning. 2010. Parsing to Stanford depen- dencies: Trade-offs between speed and accuracy. In Pro- ceedings of the 7th International Conference on Language Resources and ... automatic (rather than gold) part- of- speech tags to train Chinese dependency parsers. Finally, we analyze the relations pro- duced by both kinds of parsing and suggest which...

Ngày tải lên: 23/03/2014, 14:20

... distribution to our model as a single fac- tor (Figure 3). This is a natural extension to the use of complex factors described by Smith and Eisner (2008) and Dreyer and Eisner (2009). When a factor graph ... de- pendency F-measure of 88.8% on gold POS tags, and 86.7% on automatic part -of- speeoch tags, the best reported results for this task. 1 Introduction Accurate and effi...

Ngày tải lên: 23/03/2014, 16:20

... the sequences of left and right relations (r~ r~) and (r~+l rn 1) of w into left and right relations (r~ r]) and empty symbol e. While it is possible to construct a translator based on head ... acceptor actions above: ) Selection of a word and acceptor to start an entire derivation. • Selection of a dependent word and acceptor given a head word and a dependenc...

Ngày tải lên: 24/03/2014, 03:21