Báo cáo khoa học: "Tagging Urdu Text with Parts of Speech: A Tagger Comparison" doc

... national language of Pakistan and is one of the official languages of India. The majority of the speakers of Urdu spread over the area of South Asia, South Africa and the United King-dom1. Urdu ... negation (NEG) and question words (QW) are handled as separate categories. Adjec-tival particle (A) , KER (KER), SE (SE) and WALA (WALA) are ambiguous entities which are annotated with separate ... place of a noun and can also take a semantic marker after them. This decreases the accuracy in two ways; the wrong disambiguation of KER tag and the wrong disambiguation of unknown verbal...

Báo cáo khoa học: "Minimized Models for Unsupervised Part-of-Speech Tagging" pot

... evaluate ourmethod on a standard test corpus usingdifferent standard tagsets (a 45-tagset aswell as a smaller 17-tagset), and show thatour approach performs better than existingstate -of- the-art ... leaving each node. We alsocreate variables for every possible tag bigram andword/tag dictionary entry. We constrain link vari-able assignments to respect those grammar anddictionary variables. ... example, we do not allow a link variable to “activate” unless the correspond-ing grammar variable is also “activated”. Finally,we add an objective function that minimizes thenumber of grammar...

Báo cáo khoa học: "Compiling Regular Formalisms with Rule Features into Finite-State Automata" doc

... regular grammars into automata (Kaplan and Kay, 1994; Mohri and Sproat, 1996; Grimley-Evans, Kiraz, and Pulman, 1996) do not make use of this important mechanism. This paper presents a method ... i.e., an unordered set of attribute=val pairs. An attribute is an atomic label. A val can be an atom or a variable drawn from a predefined finite set of possible values, z The ith element ... gemination must occur and vice versa. Note that in a compound rule, each set of contexts is associated with a feature structure of its own. What is meant by 'rule features are satisfied'?...

Tài liệu Báo cáo khoa học: ATP-dependent modulation and autophosphorylation of rapeseed 2-Cys peroxiredoxin docx

... promoter of pET-22b(+) vector] as 5¢-primer and 5¢-TCTCCGTAGGGGAGACAAAAGT-3¢,5¢-ATCCCGCGGGGGAAACCTCATC-3¢ and 5¢-CTGTTTGGACGAACGCAAGATG-3¢as 3¢-primers for C53S, C175S and W88F variants, respec-tively ... subsequently for 10 min at 45 °C. Theassay was started by the addition of porcine heart citratesynthase to a final concentration of 150 nm. Thermal aggre-gation of citrate synthase was measured for 60 ... N, Barrault MB, Rumeau D, HavauxM, Biteau B & Toledano MB (2007) The Arabidopsisthaliana sulfiredoxin is a plastidic cysteine–sulfinic acidATP modulates 2-Cys peroxiredoxin M. Aran et al.1462...

Tài liệu Báo cáo khoa học: "Computationally Efﬁcient M-Estimation of Log-Linear Structure Models∗" doc

... models are a very popular tool in naturallanguage processing, and are often lauded for per-mitting the use of “arbitrary” and “correlated” fea-tures of the data by a model. Users of log-linearmodels ... thestate). We replaced the first occurrence of every tagand of every word in the training data with an OOVsymbol, giving a fixed tag vocabulary of 46 and a fixed word vocabulary of 9,014. Transition ... behelpful to think of −w as the parameters of a processthat “damage” the true model p∗, producing q0, andthe estimation of w as learning to undo that damage.In the remainder of the paper, we use...

Tài liệu Báo cáo khoa học: "Inferring Selectional Preferences from Part-Of-Speech N-grams" doc

... whether a semantic role such as the agent of an action, or a grammatical dependency such as the object of a verb. We call t the “target” because originally it referred to a vocabulary word targeted ... Proceedings of the Human Language Technology Conference and Annual Meeting of the North American Chapter of the Association for Computational Linguistics (HLT-NAACL), Edmonton, Canada, 2003, ... likely cause of errors in case (b) is over-generalization when PONG abstracts a word N-gram labeled with a relation by mapping its POS N-gram to that relation. In particular, the coarse POS tag...

Tài liệu Báo cáo khoa học: "INDEXING AND REFERENTIAL DEPENDENCIES WITHIN BINDING THEORY: A COMPUTATIONAL FRAMEWORK" doc

... binding and coreference; at the same time, BT will be seen as a theory that states very general constraints (constraint schemata), which are then (at least in part) instantiated according ... element a such that a is in the interpretation of each other and told (a, b) is true. where b is also in the interpretation of each other and a; ~b; see (3) John and Mary told each other that they ... BT compatible ? Observe that, addressing the problem of BT satisfiability can prove useful in actual parsing systems, since it provides a means to weed out ungrammatical analysis of the input...

Báo cáo khoa học: Trafﬁcking and proteolytic processing of RNF13, a model PA-TM-RING family endosomal membrane ubiquitin ligase pot

... extracellularlyas a ligand that either acts as a juxtacrine factor ormediates transactivation of a distant unknown recep-tor. Ectodomain cleavage would terminate RING-med-iated ubiquitination ... nuclear membrane. J Cell Biol 180, 763–769.51 Isokane M, Hieda M, Hirakawa S, Shudou M,Nakashiro K, Hashimoto K, Hamakawa H &Higashiyama S (2008) Plasma-membrane-anchoredgrowth factor ... ectodomain-cleaving proteases.Additional fragments of RNF13 are variablydetected, such as an HA-tagged form lacking theC-terminal FLAG epitope (Fig. 3, lane 5, asterisk) [2],suggesting that additional...

$Báo cáo khoa học: An X-ray diffraction study of model membrane raft structures doc$

Báo cáo khoa học: An X-ray diffraction study of model membrane raft structures doc

... Laboratory. The X-ray wave-length was 0.154 nm with a beam geometry of $ 0.2 · 0.5 mm in a mica sandwich cell with a surface of 2 · 5 mm and a path length of 0.5 mm. SimultaneousSAXS and WAXS ... Kamauchi S, Nakamura N, Inoue H &Kanazawa H (2004) A conserved domain in the tailregion of the Saccharomyces cerevisiae Na+⁄ H+anti-porter (Nha1p) plays important roles in localizationand ... lamellar phases andthe presence of a relatively sharp WAXS peak at0.42 nm, indicating that a gel phase forms on equili-bration at 20 °C. This WAXS peak coexists with a rel-atively weak scattering...

Báo cáo khoa học: Conformational stability and multistate unfolding of poly(A)-speciﬁc ribonuclease docx

... has been found that PARN may partici-pate in various important intracellular processes, suchas early development in plants and animals, by actingas a regulator of mRNA stability and translationalefﬁciency ... T,Inoue M, Kigawa T, Kobayashi N, Guntert P, Tanaka A et al. (2008) The RRM domain of poly (A) -speciﬁcribonuclease has a noncanonical binding site for mRNAcap analog recognition. Nucleic Acids Res ... thatthe RRM domain may be structurally adjacent to theR3H domain. Recently, it has been characterized thatthe RRM domain can bind with the 3¢-poly (A) tailand the 5¢-cap of the mRNA, and may...

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