Báo cáo khoa học: Typical 2-Cys peroxiredoxins – structures, mechanisms and functions ppt

... REVIEW ARTICLE Typical 2-Cys peroxiredoxins – structures, mechanisms and functions Andrea Hall1, P. A. Karplus1 and Leslie B. Poole21 Department of Biochemistry and Biophysics, Oregon ... adopted.Prx research has expanded rapidly in recent years,with a PubMed search for the term ‘peroxiredoxin’yielding 2, 43, 227 and 542 papers in 199 2–9 5, 199 6– 99, 200 0–0 3 and 200 4–0 7, respectively. ... Karplus and Hall [6].Fig. 1. Mechanisms of catalysis by typical 2-Cys Prxs. (A) The per-oxidatic catalytic cycle of typical 2-Cys Prxs involves three mainreactions: 1 peroxidation, 2 resolution and...

Báo cáo khoa học: "Using Predicate-Argument Structures for Information Extraction" ppt

... AMOUNT_CHANGEMARKET_CHANGE_VERB CURRENT_VALUE(PERSON and ARG0 and DIE_VERB) or(PERSON and ARG1 and KILL_VERB) DECEASED(ARG0 and KILL_VERB) or(ARG1 and DIE_VERB) AGENT_OF_DEATH(ARGM−TMP and ILNESS_NOUN) orKILL_VERB ... Information ExtractionMihai Surdeanu and Sanda Harabagiu and John Williams and Paul AarsethLanguage Computer Corp.Richardson, Texas 75080, USAmihai,sanda@languagecomputer.comAbstractIn ... MANNER_OF_DEATHARGM−TMP and DATE DATE(ARGM−LOC or ARGM−TMP) and LOCATION LOCATION(a)(b)(ARG4 or ARGM_DIR) and NUMBER and Figure 8: Mapping rules between predicate ar-guments and templette slots...

Tài liệu Báo cáo khoa học: "Knowledge Base Population: Successful Approaches and Challenges" ppt

... entities and augmenting a knowledge base (KB) with these facts. This is done through two tasks, Entity Linking – link-ing names in context to entities in the KB – and Slot Filling – adding ... Conference, aims to address and evaluate these capabilities, and bridge the IE and QA communi-ties to promote research in discovering facts about entities and expanding a knowledge base with ... query expansion – ex-pand the query into a richer set of forms using Wikipedia structure mining or coreference resolu-tion in the background document. (2) candidate generation – finding all...

Tài liệu Báo cáo khoa học: "ANAPHORA RESOLUTION: SHORT-TERM MEMORY AND FOCUSING" pptx

... comprehension processes and it needs to be incorporated in the model of the user in language understanding systems to adequately resolve am~iguitles in the user's utterances and to handle language ... reader's correct and incorrect choices of co-specifiers and ~he failures ~o understand. This view makes explicit the consideration of the reader's mental model and inferential capa~bili~ies ... texts randomly assigned to each experimental condition usin~ two randomly sampled 18 by 18 Latin Squares. Each participant was randomly assigned to a row of the Latin Squares. ~sul~a and D~.scusl~...

Báo cáo khoa học: "Randomized Language Models via Perfect Hash Functions" pptx

... 5)]ity. We use 2-universal hash functions (L. Carter and M. Wegman, 1979) deﬁned for a range of sizeM via a prime P ≥ M and two random numbers1 ≤ aj≤ P and 0 ≤ bj≤ P for j ∈ [k] ashj(x) ... 0.4663unpruned rand 69 0.5299 0.5692 0.4659pruned block 42 0.5294 0.5683 0.4665pruned rand 27 0.5289 0.5679 0.4656Table 6: Combining randomization and entropy pruning.All models use 8-bit values; “rand” ... hash functions by sampling k pairs of random numbers(aj, bj), j ∈ [k]. If the algorithm does not ﬁnda matching with the current set of hash functions, we re-sample these parameters and re-start...

Báo cáo khoa học: "DISCONTINUOUS CONSTITUENTS IN TREES, RULES, AND PARSING" pptx

... and only if every node dominated by x precedes every node dominated by y. Formally: (13) for any two nodes x and y in the node set of a tree, x < y if and only if for all nodes u and ... two nodes x and y in the node set of a tree are adjacent if and only if x < y and there is no z such that x < z < y. We shall write "x + y" to indicate that x and y are ... sequence since (P, Q) is an adjacency pair and Q and E are connected by the sequence of adjacency pairs Q-C-D-E, with C and D constituents of P and Q, respectively. Another example of an...

Báo cáo khoa học: "an experimental study of ambiguity and context" ppt

... then in certain standard contexts. 1 For a discussion of this distinction, and a comprehensive survey of contemporary se- mantics, see C. W. Morris, Signs, Language. and Behavior, 1946. ... Philosophy of Mathematics 12 and Natural Science, Princeton,1949 Williams C.D. and Harris E. C., 15 Structural Design in Metals, Ronald Press, 1949 Zemansky, M. W., Heat and Thermody- 15 namics, ... and adjectives; these are the major car- riers of the content of any discourse, and pro- bably more markedly exhibit ambiguities. The position of the word in the sentence was varied at random,...

Báo cáo khoa học: "VOICE SIMULATION: FACTORS AFFECTING QUALITY AND NATURALNESS" pptx

... excitation and system independently and (2) a means for combining the excitation and system through convolution without further interpolation of the system parameters during synthesis. Atal and ... FACTORS AFFECTING QUALITY AND NATURALNESS B. Yegnanarayana Department of Computer Science and Engineering Indian Institute of Technology, Madras-60O 036, India J.M. Naik and D.G. Childers Department ... tract system characteristics and the excitation characteristics such as pitch, pitch contour and glottal waveshape. For thls reason we have decided to use the standard LPC-type vocoder. In...

Báo cáo khoa học: "Semantic Role Labeling: Past, Present and Future" ppt

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Báo cáo khoa học: "SOME FACTS ABOUT CENTERS, INDEXICALS, AND DEMONSTRATIVES" ppt

... form and GR of the antecendent (N1) and the lexical choice and GR of the co-specifying pronoun (N2). Exactly 2 contexts selected for it, as shown by the combination of the high cell X2s, and ... local center is anticipated and maintained, both for discourse understanding (.4) and generation (B). A: Recognizing a Local Center: Two s- adjacent utterances U1 and U2 establish entity ... patterns of Kameyama's PSP (subject and non-subject, [Kam86]) with re- spect to local center, and discuss the similarity between local centers and pure indexicals. Finally, I discuss...

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