Báo cáo khoa học: "A farm-level study of risk factors associated with the colonization of broiler flocks with Campylobacter spp in Iceland, 2001 – 2004" pot

Báo cáo khoa học: "A Comparative Study of Parameter Estimation Methods for Statistical Natural Language Processing" potx

... that the value of  is adap-tively chosen according to the reduction of ExpLoss during training. The algorithm starts with a large initial , and then at each forward step the value of  ... aggre-gates the decisions of local linear models via a dynamic program. In the CMM, the local linear models are trained independently, while in the CRF model, the local models are trained jointly. ... Following pre-vious work (Ratnaparkhi, 1996), we assume that the tag of a word is independent of the tags of all pre-ceding words given the tags of the previous two words (i.e., =2 in the...

Báo cáo khoa học: A kinetic study of sugarcane sucrose synthase pdf

... while the Dixon plot shows t he lines intersecting to the left of the y-axis. Mixed inhibition shows the lines intersecting totheleftofthey-axis i n both plots. The inhibition patternsindicate ... Hence, MCA can be a great help in determining potential target steps for metabolic engineering,because the reactions in the pathway that have the mostpotential of modifying a target ﬂux or metabolite ... are on the axis]. The substrate Kivalues obtained from the intersection points of the lines are indicated in Table 1. Sugarcane SuSyexhibited Michae lis–Menten kinetics, with Hill coefﬁcientsclose...

Báo cáo khoa học: "A Pilot Study of Opinion Summarization in Conversations" docx

... CICLing.Theresa Wilson and Janyce Wiebe. 2003. Annotatingopinions in the world press. In Proceedings of SIG-Dial.Theresa Wilson. 2008a. Annotating subjective content in meetings. In Proceedings ... 2005.Extractive summarization of meeting recordings. In Proceedings of EUROSPEECH.Vincent Ng, Sajib Dasgupta, and S.M.Niaz Ariﬁn. 2006.Examining the role of linguistic knowledge sources in the automatic identiﬁcation ... life.committing them mostly is, you know, either crimes of passion or at the momentor they think they’re not going to get caughtbut you also have to think whether it’s worthwhile on the individual...

Báo cáo khoa học: "A Comparative Study on Generalization of Semantic Roles in FrameNet" ppt

... conceptual necessity of the roles in the frame to which it belongs.23Proceedings of the 47th Annual Meeting of the ACL and the 4th IJCNLP of the AFNLP, pages 1 9–2 7,Suntec, Singapore, 2-7 August ... are determinedautomatically in the training process.6 Experiment and DiscussionWe used the training set of the Semeval-2007Shared task (Baker et al., 2007) in order to ascer-tain the contributions ... roles with few training in- stances are expected to receive additional cluesfrom other training instances via role-group fea-tures. Another advantage of this approach is that the usefulness of the...

Báo cáo khoa học: "A Comparative Study of Hypothesis Alignment and its Improvement for Machine Translation System Combination" pot

... considering the posterior probabilities of words in hypothesis lists. Therefore, like other voting algorithms, its performance strongly depends on the quality of the n-best hypotheses of each sin-gle ... we start from the intersection of the two word alignments, and then continuously add new links between backbone and hypothesis if and only if both of the two words of the new link are un-aligned ... link exists in the union of two word alignments. If there are more than two links share a same hypothesis or backbone word and also satisfy the constraints, we choose the link that with the...

Báo cáo khoa học: "A Comparative Study of Reinforcement Learning Techniques on Dialogue Management" pdf

... satisfaction. An-other beneﬁt of RL is that it can be trained usingeither real or simulated users and continue to learnand adapt with each interaction (in the case of on-line learning). To use ... spo-ken input to text using the Automatic SpeechRecognition (ASR) component and then tries toinfer the meaning using the Natural Language Un-derstanding (NLU) component. At the core lies the Dialogue ... simulates interactions. Learning or model-free algorithms only use training examples fromprevious interactions with the environment andthat is the main difference of these two categories,according...

Báo cáo khoa học: A comparative study of methylglyoxal metabolism in trypanosomatids potx

... preparation, or the 2,4-dinitro-phenylhydrazine reagent). The mass and retention time of the contaminating hydrazone was consistent with the impurity in the l-lactaldehyde preparation being acetone ... protein was detected in whole celllysates of T. brucei procyclics, despite overexposure of the blot. In combination with our enzymatic analysis of cell extracts, these data confirm the absence of ... After stirring fora further 2–3 h, the resin was again filtered, and the filtratewas adjusted to pH 4.0 by the addition of Dowex 50 resin(hydrogen ion form). Following filtration, the filtrate...

Báo cáo khoa học: A comparative study of type I and type II tryparedoxin peroxidases in Leishmania major pot

... triangle. The cysteine shown in this study to be involved in disulﬁde-bridge formation with the active site cysteine is marked with a square. The differences in the three L. major GPX-like proteins ... Again one additional peak wasdetected in the oxidized spectrum which was absent in the reduced one and again the mass ﬁtted to the sum of the two peptides ()2H + 1) containing the samecysteine ... obligate intracellular parasites of macro-phages, and therefore live in a potentially hostile oxidiz-ing environment in the mammalian stage of their lifecycle, none of these TDPX proteins has...

Báo cáo khoa học: A spectroscopic study of the interaction of isoﬂavones with human serum albumin pdf

... provides a concrete indica-tion of the binding site in HSA. The binding site is locatedwithin one of the domains, near the domain–domain inter-face in the structure. The residues in and around this ... fatty acid binding site) [36] also does not displace the daidzein in the daidzein–HSA complex ruling out the binding of isoﬂavones to subdomain IIIA.Binding site details ) outlining potential ... with HSA–warfarin complex .The crystal structure of HSA–warfarin complex(PDB ID:1h9z) was used to understand the possible binding mode of genistein with HSA. Close-up of the binding site of the...

Báo cáo khoa học: A kinetic study of a ternary cycle between adenine nucleotides pptx

... equations shown in the Appendix (which takesinto account the depletion of NADH, but not the depletion of the nonrecycling substrates since their ini-tial concentrations were higher), using the rate ... which the system cannot reach the steady state is shown in Fig. 1D, with an excess of ACS. The inset plots show the results obtained by HPLC analysis of the reactionmedium before the start of the ... equation of the reaction time of the linear portion of experimental progress curves, using the software mentioned above.HPLC nucleotides determination The nucleotides concentrations attained in the...

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