Báo cáo khoa học: "Comparing the Accuracy of CCG and Penn Treebank Parsers" docx

... Australia james@it.usyd.edu.au Abstract We compare the CCG parser of Clark and Curran (2007) with a state -of -the- art Penn Treebank (PTB) parser. An accuracy com- parison is performed by converting the CCG derivations into ... Hocken- maier and Steedman (2007) invested a significant amount of time and effort in creating the mapping. Second, some of the labels i...

Ngày tải lên: 17/03/2014, 02:20

... fifth of DepBank is held out to optimize the speed and accuracy of the three systems. They conclude from the results of these experiments that the cut-down XLE parser is two-thirds the speed of ... in the PoS tags and by the need to balance depth of analysis against the size of the deriva- tion space. On the Susanne corpus, the geometric mean of the...

Ngày tải lên: 20/02/2014, 12:20

... lexicon of the tar- get grammar, 4 and make use of the existing sets of 4 When the lexicon is less accurate, I can determine the number of clusters using other algorithms (Hamerly, 2003). SCFs for the ... c m . I then initialize the num- ber of clusters k to the number of c m . I finally update the acquired SCFs using the ob- tained clusters and the confidenc...

Ngày tải lên: 17/03/2014, 06:20

... semantics. ASLC, on the other hand, does not attempt to at- tach the VP to the S until the very end (Fig lb). Thus even the thematic role of the subject NP re- mains unresolved until the very end. ... COMMUNICATE The content of the communication between syntax and semantics is a set of grammatical relations and thematic roles. Syntax talks about the grammati...

Ngày tải lên: 20/02/2014, 21:20

... marked on it and has to tell another person how to draw the path onto a similar map. Neither par- ticipant can see the other's map. The nature of the map task is such that from the conversations ... played and is similar to the core speech act in Traum and Allen (1991). The ensuing response and feedback moves function as presentation and acceptance...

Ngày tải lên: 17/03/2014, 08:20

... based on either understanding of the text or frequency characteristics of it. One kind of information relates to the under- standing of the meaning of the text, using semantic and pragmatic ... house of the soviet parliament acquired a reputation as an investi- gator of the corruption in Kazakhstan. The two most frequent senses of the ambiguous noun &ap...

Ngày tải lên: 17/03/2014, 08:20

... word of the lex- ical category, f is the lexical category, s is the argu- ment slot, h a is the head word of the argument, and l indicates whether the dependency is long-range. For example, the ... and the empirical expected value, of each feature (to calcu- late the gradient); and the value of the likelihood function. For the normal-form model, the emp...

Ngày tải lên: 23/03/2014, 19:20

... they are only taken to indicate the presence of the specific holocytochrome under investigation if the features of the spectrum, in terms of wavelength maxima, and the position and intensity of ... pylori. The two systems can each be subdivided into proteins which contribute to the handling of heme and ligation of heme to the apocytochrome, and those involve...

Ngày tải lên: 06/03/2014, 09:22

... contributions of Sco1 and Sco2 to this process. Our understanding of these and other events awaits the development of in vitro systems in which stabilized Cox2 can be expressed and studied. The Cu A assembly ... detected in the redox state of the cysteines of Sco1 in both Sco1 and Sco2 patient backgrounds, and these correlate well with the severity of the obs...

Ngày tải lên: 14/02/2014, 18:20

... procedure. The finding that the effect of CoASH depends on the presence of ATP (although not of other NTPs such as GTP and UTP; not shown) suggests that it is indirectly mediated via the formation of ... catalysing the forma- tion of glucuronate and glucuronate 1-phosphate were present in the lumen of the ER (or had their catalytic site oriented towards the lume...

Ngày tải lên: 19/02/2014, 07:20