models based on statistical mechanics
Tài liệu Báo cáo khoa học: "Improved Smoothing for N-gram Language Models Based on Ordinary Counts" doc
Ngày tải lên :
20/02/2014, 09:20
... to produce a normalized conditional probability distribution Additional constraints on the previous For all previous smoothing methods other than KN, we refer the reader only to the excellent comparative ... the best approach when language models based on ordinary counts are desired Evaluation and Conclusions We trained and measured the perplexity of 4gram language models using English data from the ... interpolation parameters to the same double duty that other models force the discount parameters to Jelinek-Mercer smoothing is an exception to this generalization, but since it has only interpolation...
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Báo cáo khoa học: "Are These Documents Written from Different Perspectives? A Test of Different Perspectives Based On Statistical Distribution Divergence" ppt
Ngày tải lên :
23/03/2014, 18:20
... emphasis on different words Conclusions In this paper we develop a computational test of different perspectives based on statistical distribution divergence between the statistical models of ... distributions of document collection pairs in four conditions using Monte Carlo methods, and plot the results in Figure The test of different perspectives based on statistical distribution divergence ... document collection pairs in four conditions The horizontal line is ∆θ = We would like thank the anonymous reviewers for useful comments and suggestions This material is based on work supported...
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Báo cáo khoa học: "Headline Generation Based on Statistical Translation" docx
Ngày tải lên :
23/03/2014, 19:20
... language generation task, summarization can be conceptually modeled as consisting of two major sub-tasks: (1) content selection, and (2) surface realization Parameters for statistical models of both ... although Clinton wants a 12-15 percent pullback 1: 2: 3: 4: 5: 6: clinton clinton wants clinton netanyahu arafat clinton to mideast peace clinton to meet netanyahu arafat clinton to meet netanyahu ... get longer Multiple Selection Models: POS and Position As we mentioned earlier, the zero-level model that we have discussed so far can be extended to take into account additional information both...
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Báo cáo toán học: " Indoor positioning based on statistical multipath channel modeling" doc
Ngày tải lên :
20/06/2014, 21:20
... K Witrisal, On impact of topology and cost function on LSE position determination in wireless networks, in Proceedings of the Workshop on Positioning, Navigation, and Communication, 129–138 (2006) ... However, only the first path delay, τ , is required for location estimation purpose Therefore, we focus the ML estimation on the TOA only, assuming a statistical model of the channel In this section, ... proposed direct algorithm are demonstrated through computer simulations Finally, conclusions are presented in Section ML-TOA estimation One OFDM symbol duration is T + TG, where TG is the guard...
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Báo cáo hóa học: " Anomalous heat transfer modes of nanofluids: a review based on statistical analysis" doc
Ngày tải lên :
21/06/2014, 03:20
... EDL,Aggregation and Diffusion,Deposition of NPs on Heating Surface Brownian Motion,Deposition of NPs on Heating Surface Aggregation and Diffusion,Thermal Conductivity Enhancement (alone) Long Range ... http://www.nanoscalereslett.com/content/6/1/391 Conduction/convection/mixed mode heat transfer studies (85 observations) The proposed mechanisms for the enhancement of heat transfer in conduction, convection or for mixed conditions ... Maxwellian [8], Equation 2, or renovated Hamiltonian-Crosser equation models [9], Equation 3, to be able to predict the effective heat conduction in a nanofluid Additional components are usually...
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Efficient retrieval and categorization for 3d models based on bag of words approach
Ngày tải lên :
10/09/2015, 09:10
... put the emphasis on the categorization system Retrieval Categorization 3D Models One vs one A Number of Comparison Similar Models One vs class A Class of Comparison Similar Models Bag-of-words ... existing models In this thesis, the one-to-one comparison scenario is named as 3D model retrieval and the one-to-class comparison procedure is called 3D model categorization The input format of 3D models ... categorized into four categories: statistical -based, spatial map -based, topology -based and view -based methods The statistical -based methods extract geometrical information of the object and then bin...
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Tài liệu Báo cáo khoa học: "A Pronoun Anaphora Resolution System based on Factorial Hidden Markov Models" docx
Ngày tải lên :
20/02/2014, 04:20
... a few considerations made us reconsider First, exceptions are found in the corpus Personal pronouns such as she or he are used to refer to country, regions, states or organizations Second, existing ... this novel FHMM -based pronoun resolution system Model Description This work is based on a graphical model framework called Factorial Hidden Markov Models (FHMMs) Unlike the more commonly known Hidden ... solved the problem with add-one smoothing and deleted interpolation in training models besides the transformation in the generation order of the observation model Conclusion and Future Work This...
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Báo cáo khoa học: "A New Statistical Parser Based on Bigram Lexical Dependencies" potx
Ngày tải lên :
08/03/2014, 07:20
... This section describes two modifications which improve the model's performance • In addition to conditioning on whether dependencies cross commas, a single constraint concerning punctuation is introduced ... backed-off estimation strategy is used for making prepositional phrase attachment decisions The idea is to back-off to estimates based on less context In this case, less context means looking ... relationship in only one of these cases, so this sentence would contribute an estimate of ½ that the two words are related This seems unreasonably low given that 'sales of' is a strong collocation...
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Báo cáo khoa học: "Japanese Dependency Structure Analysis Based on Maximum Entropy Models" doc
Ngày tải lên :
08/03/2014, 21:20
... combinations of the basic features We selected the combined features based on our intuition In our future work, we believe some methods for automatic feature selection should be studied One of ... Computational Linguistics, 22(1):39-71 Michael Collins 1996 A new statistical parser based on bigram lexical dependencies Proceed- ings of the 34th Annual Meeting of the Association for Computational ... NL128-4:23-30 (in Japanese) Adwait Ratnaparkhi 1997 A linear observed time statistical parser based on maximum entropy models Conference on Empirical Methods in Natural Language Processing Eric Sven Ristad...
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Báo cáo khoa học: "A Statistical Machine Translation Model Based on a Synthetic Synchronous Grammar" docx
Ngày tải lên :
31/03/2014, 00:20
... conventional features as in (Zhang et al., 2008) in our current implementation 2.2 The SSG -based Translation Model The translation in our SSG -based translation model can be treated as a SSG derivation ... derivation consists of a sequence of grammar rule applications To model the derivations as a latent variable, we define the conditional probability distribution over the target translation e and ... corresponding hypotheses until all nonterminal leaf nodes are processed The key feature of our decoder is that the derivations are based on synthetic grammar, so that one derivation may consist...
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Báo cáo khoa học: "Unsupervised Topic Identification by Integrating Linguistic and Visual Information Based on Hidden Markov Models" potx
Ngày tải lên :
31/03/2014, 01:20
... finding duration below a certain amplitude level which lasts more than one second Topic Identification based on HMMs We employ HMMs for topic identification, where a hidden state corresponds to a topic ... of long japanese sentences based on the detection of conjunctive structures Computational Linguistics, 20(4) Regina Barzilay and Lillian Lee 2004 Catching the drift: Probabilistic content models, ... Kurohashi 2004 Automatic construction of nominal case frames and its application to indirect anaphora resolution In Proceedings of the 20th International Conference on Computational Linguistics, number...
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Báo cáo toán học: " A novel voice activity detection based on phoneme recognition using statistical model" pdf
Ngày tải lên :
20/06/2014, 20:20
... white noise at SNR = (a) based on the proposed VAD; (b) based on the combined method Figure VAD at non-stationary noise at SNR = (a) based on the proposed VAD; (b) based on the combined method ... noise suppression methods is given in Section The detail experiments and simulation results are shown in Section Finally, the discussion and conclusion are drawn in Section and Section respectively ... detection based on phoneme recognition using statistical model Xulei Bao∗ and Jie Zhu Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China ∗ Corresponding...
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báo cáo hóa học:" A novel voice activity detection based on phoneme recognition using statistical model" ppt
Ngày tải lên :
21/06/2014, 17:20
... white noise at SNR = (a) based on the proposed VAD; (b) based on the combined method Figure VAD at non-stationary noise at SNR = (a) based on the proposed VAD; (b) based on the combined method ... noise suppression methods is given in Section The detail experiments and simulation results are shown in Section Finally, the discussion and conclusion are drawn in Section and Section respectively ... detection based on phoneme recognition using statistical model Xulei Bao∗ and Jie Zhu Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China ∗ Corresponding...
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Báo cáo hóa học: " Research Article Face Retrieval Based on Robust Local Features and Statistical-Structural Learning Approa" pptx
Ngày tải lên :
21/06/2014, 22:20
... histogram can be used for comparison of patterns based on their statistical content, but it does not provide any structural description since information about the locations of features within the area ... combination of structural and statistical information Thus the histogram obtained by concatenation of subarea histograms allows for flexible description of global statistical and structural information ... measure) However, one should notice that only few publications so far have been made based on release in 2003, many other references are based on other releases For comparison, we also list the...
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Báo cáo lâm nghiệp:"Optimising the management of Scots pine (Pinus sylvestris L.) stands in Spain based on individual-tree models" potx
Ngày tải lên :
08/08/2014, 01:21
... costs data, and the smoothed price and cost models based on the data points Figure Simulation and optimisation components of a management schedule with one pre-commercial thinning (dashed line), ... year depending on site index as follows: t = 35 – 0.677 ´ SI on data provided by the Forest Technology Centre of Catalonia The tending year function was estimated based on a study by Montero et al ... random solution, and analysing the variation among solutions The standard deviation of soil expectation value was 7223 ptas ha–1, which is 0.49% of the mean The standard error of mean was only 0.049%...
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Báo cáo y học: " Formation of translational risk score based on correlation coefficients as an alternative to Cox regression models for predicting outcome in patients with NSCLC" doc
Ngày tải lên :
13/08/2014, 16:20
... prediction of prognosis will rely on a combination of numerous clinical data concerning the individual patient, particularly information relating to biomarkers However, translational integration of ... months, those with unambiguous prognosis who survived for more than 12 months but less than 60 months, and those who survived 60 months or longer Log-rank tests confirmed significant effects on ... constellation without considering additional interfering and protective influences [26,30] As a consequence, the expression of biomarkers and clinical information requires integration into comprehensive...
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