a discriminative latent variable model

Ngày tải lên: 17/03/2014, 01:20

Ngày tải lên: 23/03/2014, 17:20

Ngày tải lên: 23/03/2014, 14:20

... 5-fold stratified cross-validation over the labeled data, while using stratified samples for the coarsely labeled data. Statistical significance was as- sessed by a hierachical bootstrap of 95% ... that the interpolated model dominates all other models in terms of accuracy. While the cascaded model requires both large amounts of fully labeled and coarsely labeled data, the interpolated model is ... these models. 2.1 A cascaded model A straightforward way of fusing the two models is by means of a cascaded model in which the predic- tions of the partially supervised model, trained by maximizing L C (θ C ) are...

Ngày tải lên: 20/02/2014, 05:20

... hits for a| the carrot|carrots laugh|laughs|laughed” and 0 hits for a| the manservant|manservants|menservants laugh|laughs|laughed”; many of the carrot hits are false positives but a significant number ... DUAL-LDA is found significantly better than Pad ´ o et al.’s model on unseen adjective- noun combinations, and significantly worse than the same model on seen adjective-noun data. Latent variable ... a viable option. Acknowledgements This work was supported by EPSRC grant EP/G051070/1. I am grateful to Frank Keller and Mirella Lapata for sharing their plausibility data, and to Andreas Vlachos...

Ngày tải lên: 07/03/2014, 22:20

Ngày tải lên: 17/03/2014, 22:20

Ngày tải lên: 30/03/2014, 23:20

Ngày tải lên: 18/06/2014, 19:20

... translation, we develop a discriminative or- der model. An advantage of such a model is that we can easily combine different kinds of features (such as syntax-based and surface-based), and that ... Distortion models for statistical machine translation. In ACL. D. Chiang. 2005. A hierarchical phrase-based model for statis- tical machine translation. In ACL. M. Collins. 2000. Discriminative reranking ... inference and train- ing of context-rich syntactic translation models. In ACL. P. Koehn. 2004. Pharaoh: A beam search decoder for phrase- based statistical machine translation models. In AMTA. R....

Ngày tải lên: 20/02/2014, 12:20

... that they have the dis- advantage of being computationally expensive, and not all relevant features can be included. A discriminative language model (DLM) assigns a score to a sentence , measuring ... spe- cific applications and therefore were able to obtain real negative examples easily. For example, Roark (2007) proposed a discriminative language model, in which a model is trained so that a correct ... DLMs are trained using correct sentences from a corpus and negative examples from a Pseudo-Negative generator. An advantage of sampling is that as many nega- tive examples can be collected as correct...

Ngày tải lên: 08/03/2014, 02:21

... neighboring variables are 4 Variables for link labels can be integrated in a straightfor- ward manner, if desired. true and it evaluates to a non-negative real num- ber; otherwise, it evaluates to 1 and ... annotations. 890 UNIGRAM CASE− UNIGRAM CASE− CASE− LINK CASE− LINK CASE− LINK CASE− LINK CASE 6,gen CASE 3,gen CASE 3,nom 3,acc CASE UNIGRAM CASE− UNIGRAM CASE− UNIGRAM CASE− CASE 2, CASE LINK CASE 6,acc CASE− BIGRAM CASE− BIGRAM TREE WORD− LINK WORD LINK CASE ... w 6 =amantis) and with one morphological attribute (i.e., case). The variables L 3,6 , CASE 3,acc and CASE 6,acc are bolded, indicating that w 3 and w 6 are linked and both have the accusative case. The...

Ngày tải lên: 17/03/2014, 00:20

Ngày tải lên: 30/03/2014, 17:20

Ngày tải lên: 22/06/2014, 23:20

Ngày tải lên: 05/09/2013, 16:11

... steady flow refrigeration cycle model consisting of a constant thermal-capacity heating branch, two constant thermal- capacity cooling branches and two adiabatic branches with the consideration ... endoreversible refrigeration cycle model consisting of a constant thermal-capacity heating branch, two constant thermal-capacity cooling branches and two adiabatic branches is viewed as a production ... 1 and 2 is a heating branch with constant thermal capacity (mass flow rate and specific heat product) in C ; the processes between 3 and 4, and 4 and 5 are two cooling branches with constant...

Ngày tải lên: 05/09/2013, 17:08

... words,  dS 1 S 1 has instantaneous variance  2 1 ,  dS 2 S 2 has instantaneous variance  2 2 ,  dS 1 S 1 and dS 2 S 2 have instantaneous covariance  1  2 . Accumulation factor:  t = exp  Z t 0 rdu  : The ... dB 1  =  1   1 S 1  1 + 1   2 S 2  2  d e B 1 : Notice that e B 2 does not appear. Let V be an F T  -measurable random variable. If V depends on B 2 , then it can probably not be hedged. For example, if V = hS 1 T ;S 2 T; and  1 or  2 depend ...  2  2 d e B 2  : Let V be F T  -measurable. Define the f IP -martingale Y t= f IE  V T     Ft  ; 0tT: CHAPTER 19. A two-dimensional market model 207 More precisely, we define the f IP -martingale Y t= f IE  V T     Ft  ;...

Ngày tải lên: 18/10/2013, 02:20

... algorithm can be summarized as follows: Assumptions — A batch of N samples of the array output y(t), that can accurately be described by the model (64.1) and (64.2) is available. The array is calibrated ... allowed to be arbitrarily spatially correlated with an unknown covariance matrix. Assumption A3 isawell- known condition that, under a weak restriction on m, guarantees DOA parameter identifiability ... scenarios, two planar wavefronts arrive from DOAs 0 ◦ and 5 ◦ relative to the array broadside. Unless otherwise stated, the emitter signals are zero-mean Gaussian with signal covariance matrix...

Ngày tải lên: 08/11/2013, 12:15

Ngày tải lên: 17/12/2013, 15:17

... Second, a continuous-time model provides a convenient characterization of the optimal contract through an ordinary differential equation. With this characterization we can say a great deal about ... at any time. Because the agent can always underreport and steal at rate γ R until termination, any incentive compatible strategy yields the agent at least R. In contrast, this constraint may ... must hold cash in the bank with a balance equal to −D as a condition of the credit line. Both the required capital K and the compensating balance −D are funded through a large initial draw on the...

Ngày tải lên: 12/01/2014, 22:16

... companies. What senior managers needed was a plan expressed in terms of three broad, critical success factors: qualitative factors, or- ganizational factors, and quantitative factors. To take advantage ... company as a whole ORGANIZATIONAL FACTORS Coordination of organizational behavior in project management is a delicate bal- ancing act, something like sitting on a bar stool. Bar stools usually come ... 13 Environmental Opportunities and Threats Organizational Strengths and Weaknesses Gathering of Information Firm’s Social Responsibility Managerial Values of Management Evaluation of Information Strategy Evaluation Strategy Selection Strategy Implementation External Analysis Internal Analysis FIGURE...

Ngày tải lên: 16/01/2014, 16:33