Báo cáo khoa học: "Lexicon acquisition with a large-coverage unification-based grammar" pot

... chose for a statistical PoS tagger, i.c. Trigrams'n'Tags (TnT) (Brants, 2000). These taggers return a num- ber of alternatives each associated with a proba- bility, so that the parser can ... features. Barg and Walther (1998) talk about generalisable and revisable information. The former are values that are too specific (e.g. case), while the latter are values that should...

Ngày tải lên: 17/03/2014, 22:20

... grammars (TSGs) have potential advantages over regular context-free grammars (CFGs), but there is no obvious way to learn these grammars. In particular, learning procedures are not able to take ... direct advantage of manually an- notated corpora like the Penn Treebank, which are not marked for derivations and thus assume a stan- dard CFG. Since different TSG derivations can produce the sam...

Ngày tải lên: 17/03/2014, 02:20

... the source agenda and the target agenda. Initially the source agenda contains an empty sentence and the target agenda is empty. At each processing stage, the decoder reads in a character from ... with each candidate in the source agenda and puts the generated candidates onto the target agenda. After each character is processed, the items in the target agenda are copied to the source agend...

Ngày tải lên: 08/03/2014, 02:21

... can be captured in a context-free grammar with a metagrammor, i.e. a higher-level grammar that generates the actual grammar as its language. The metagrammar has two kinds of statements: ... : 1. Grammar a. Lexicon b. Rules and Metarules 2. Parser and Grammar Compiler 3. Semantics Handler 4. Disambiguator 5. HIRE database 3. GRAMMAR AND LEXICON The grammar that has be...

Ngày tải lên: 08/03/2014, 18:20

Ngày tải lên: 09/03/2014, 01:20

... the language-independent bracketing degenerate case of the SITG: 3 all A -4 [AA] aO A + (AA) A b(54Y) x/y VX, y lexical translations A b(.~¢) .z'/~? VX language 1 vocabulary A b(_~y) ... statistical and grammatical machine translation. As with the pure statistical translation model described by Wu (1996) (in which a bracketing transduction gram- mar models the chann...

Ngày tải lên: 17/03/2014, 07:20

... engaging in a dialogue. 3.2 The Internal Map Godot moves about in the basement of our depart- ment and uses an internal map for navigation. It has two levels of representation: a geometrical and a topological ... OAA connection  USER 1 — Image Viewer I- Semantic Map' Map Viewer I Spoken Dialogue System I map info off-board on-board Navigation System 4-10 Module Navigation...

Ngày tải lên: 17/03/2014, 22:20

... and data already present in the corpus, the URLs of all available data from the website are matched against the IDs of the already extracted data. 2.2 Linguistic Annotation and Information Extraction As ... will use an HPSG-based parser that is avail- able within the HoG architecture (Callmeier, 2000) and combine this with a semantic infer- ence approach based on discourse analysis (Cimia...

Ngày tải lên: 22/02/2014, 02:20

... M, Hasegawa K, Horita C & Akera S (1999) A new matrix protein family related to the nacreous layer formation of Pinctada fucata. FEBS Lett 462, 225–229. 5 Kono M, Hayashi N & Samata T ... region was decreased and a new band was detected at 64 kDa, but only after treatment with heparitinase II (Fig. 5A) . Although the same band was obtained after digestion Fig. 3. 45 Ca overlay a...

Ngày tải lên: 18/02/2014, 17:20

... or ÔhemoabzymesÕ, are not as efficient a category of catalysts as their natural hemoprotein counterparts. The hemoabzymes, which display a peroxidase activity, are characterized by k cat /K m values ... hydroperoxide, following a peroxidase-like two-step oxygen-transfer mechanism involving a radical–cation intermediate. The best system, associating H 2 O 2 as oxidant and 3A3 –MP8 as a...

Ngày tải lên: 19/02/2014, 12:20