Báo cáo khoa học: "Metagrammar Engineering: Towards systematic exploration of implemented grammars" pptx

... Association for Computational Linguistics Metagrammar Engineering: Towards systematic exploration of implemented grammars Antske Fokkens Department of Computational Linguistics, Saarland University ... approach facilitates the system- atic exploration of grammars through compar- ison of competing analyses. The idea is illus- trated through a comparative study of auxil- i...

Ngày tải lên: 30/03/2014, 21:20

... to evaluate the complexity of the algorithms as a function of the size of the grammar, we assume that I V I and I GI are of the same order of magnitude n. Step 1 of the algorithm corresponds ... tractability and the quality of the lexicalization. The Problem of the Lexiealization of a Grammar Given a lexicalized grammar, this part describes the problem of the opt...

Ngày tải lên: 23/03/2014, 20:21

... capacity of the line) cofit d'investissement de la ligne (cost of investissement of the line) d6clenchement de la ligne 9 (tripping of the line) E longueur de la ligne (size of the ... the results of a preliminary experiment on the detection of semantic vari- ants of terms in a French technical document. The general goal of our work is to help the struc-...

Ngày tải lên: 23/03/2014, 19:20

... validation of the two-state reversible interpretation of the denaturation of the [TetR– Tc] complex was obtained using a vant’Hoff analysis of the CD data. Taking into account that the intensity of CD signals ... concentration of 0.4 mgÆmL )1 and scan rate of 1 KÆmin )1 , T max is 60.4 °C. The denaturation temperature, T max , of the complex of TetR with Tc is 70.4 °C, measu...

Ngày tải lên: 20/02/2014, 02:21

... terms. y Entropy: the entropy of the word to word translation probability of the English word i e . y Part -of- Speech mapping template: whether the POS tags of the two words are in the “highly ... ) ji fe. y Rank: the rank of the word to word probabil- ity of j f in as a translation of i e among all the foreign words in the current tree. The above heuristics are a set...

Ngày tải lên: 20/02/2014, 15:20

... the problem of indirect associations, illus- trated in Figure 1. The sequences of u's and v's represent corresponding regions of a bitext. If uk and vk co-occur much more often than ... frequency of a word type pair is simply the number of times the pair co-occurs in the corpus. However, n(u) = ~-~v n(u.v), which is not the same as the frequency of u, because eac...

Ngày tải lên: 22/02/2014, 03:20

... expressiveness of formalisms for linguisic applications. The design issues encountered in build- ing an implementation of F-PATR should be of inter- est to implementors of such a paradigm. Of course ... CONSTRAINTS From the graph perspective, the basic vocabulary of PATR-II (Shieber 1984) consists of a set of arc labels and a set of terminal (leaf) node labels, the lat...

Ngày tải lên: 17/03/2014, 09:20

... descriptions by describing sets of trees that are encodings of the formulas of some language of semantic representa- tions, such as predicate logic. Fig. 1 shows an example of a constraint graph for the ... maps each subgraph G to a set of splits, each of which records which fragment of G should be placed at the root of the solution, what the sub- graphs after removal of t...

Ngày tải lên: 31/03/2014, 03:20

... form of PC is built up in the following way: first, a dimer of PC is formed through the association of each (CT + BCCP) domain of two proto- mers of PC, and subsequently, individual BC domains of the ... reaction mixture contained 5 units of Ex Taq TM (Takara), 1· Ex Taq buffer, 200 l M each of the four dNTPs, 1 l M each of the primers and 10 ng of pTrc99A in a final volume...

Ngày tải lên: 16/03/2014, 16:20

... efficient: the analysis of a Finnish word in a running text takes an average of 15 ms of DEC 20 CPU-time. I INTRODUCTION This paper briefly discusses the application of rule-based systems ... segments juxtaposed to it. Due to lack of space, we outline here only the structure of Finnish nominals. The surface form of a Finnish nominal ~ay be composed of the following c...

Ngày tải lên: 24/03/2014, 05:21