a hybrid hierarchical model

... 4: Manual Evaluations Here, we manually evaluate quality of summaries, a common DUC task. Human annotators are given two sets of summary text for each document set, generated from two approaches: ... this paper. In this paper, we present a novel approach that formulates MDS as a prediction problem based on a two-step hybrid model: a generative model for hierarchical topic discovery and a regression model ... 12 Overall 24 66 2 Table 4: Frequency results of manual quality evaluations. Results are statistically significant based on t-test. T ie indi- cates evaluations where two summaries are rated equal. according...

Ngày tải lên: 20/02/2014, 04:20

... of Henry and Rende Kahane, pages 453-467, Urbana, 1973. University of Illi- nois Press. [Lascarides and Asher, 1991] Alex Lascarides and Nicholas Asher. Discourse relations and defea- sible ... p may be false. Our model presupposes that Q's question has been understood by R as intended by Q, that Q's request was appropriate, and that Q and R are engaged in a cooperative ... to instantiate the existential variable ?q in Use-obstacle.) After the existential variable is instantiated, plan recognition proceeds as described above at SPlacing a limit on the maximum...

Ngày tải lên: 17/03/2014, 09:20

... expected 379 Jamie,Callan, Jamie,Callan, J.,Callan, J.,Callan, J.,Callan, J.,Callan, Jamie,Callan, Jamie,Callan, v, Jamie,Callan, J.,Callan, v,v,v, J.,Callan, J.,Callan, J.,Callan, J.,Callan, Jamie,Callan, Figure 2: Pairwise model ... Further, our hierarchical approach provides a number of ad- ditional advantages. First, the recursive nature of the tree (arbitrary depth and width) allows the model to adapt to different types of data and ... we can compare running times for any desired level of accuracy. For example, on the 145k men- tion dataset, at a 60% accuracy level the hierarchical model is 19 times faster and at 90% accuracy...

Ngày tải lên: 30/03/2014, 17:20

Ngày tải lên: 30/03/2014, 21:20

Ngày tải lên: 31/03/2014, 00:20

Ngày tải lên: 24/04/2014, 16:03

Ngày tải lên: 23/06/2014, 01:20

... pleased that a rigorous statistical analysis can produce a quantitative relationship between levels of particles in outdoor air and the risk of death that has a straightforward interpretation. Analyses ... the authors' use of an approximate two-stage Bayesian analysis to be particularly interesting. The approach is heuristically appealing and is in fact similar to the ad hoc two-stage algorithm ... mortality in Birmingham, Alabama: a reappraisal. Technical Report. National Institute of Statistical Science, Research Triangle Park. Smith, T. C., Spiegelhalter, D. J. and Thomas, A. (1995) Bayesian...

Ngày tải lên: 06/03/2014, 16:20

... averaging the mixing proportions of all the training documents. 4 Hierarchical Bayesian Approach The previous approach, while attractive in its sim- plicity, makes a strong claim that a word can ... Computational linguistics, pages 495–501. Daniel Ramage, David Hall, Ramesh Nallapati, and Christopher D. Manning. 200 9a. Labeled lda: A supervised topic model for credit attribution in multi- labeled corpora. In ... this model, which we designate as hierarchical Labeled- LDA (hLLDA), is shown in Algorithm 1. Just as with Fixed Structure LDA 4 (Reisinger and Pa¸sca, than with a hand-selected threshold, this raises...

Ngày tải lên: 07/03/2014, 22:20

... 2007. Bilingual lsa-based adaptation for statistical machine translation. Machine Translation, 21(4):187–207. Hua Wu, Haifeng Wang, and Chengqing Zong. 2008. Domain adaptation for statistical machine translation with ... Proc. HLT-NAACL 2003. Philipp Koehn. 2004. Statistical significance tests for machine translation evaluation. In Proc. EMNLP 2004. David Mimno, Hanna M. Wallach, Jason Naradowsky, David A. Smith, and Andrew ... 2008. Thomas Hofmann. 1999. Probabilistic latent semantic analysis. In Proc. of UAI 1999, pages 289–296. Philipp Koehn, Franz Josef Och, and Daniel Marcu. 2003. Statistical phrase-based translation....

Ngày tải lên: 23/03/2014, 14:20

Ngày tải lên: 05/09/2013, 16:11

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Ngày tải lên: 06/09/2013, 05:48

... first solve (1) and (2) simultaneously numerically, and then integrate (3) to obtain the function A   . 32.3 Calibration Let  0  0 be given. The value at time t of a bond maturing at time t + ... , 1 2  2 2 C 2 2  ; (3) A 0 = 0; Chapter 32 A two-factor model (Duffie & Kan) Let us define: X 1 t= Interest rate at time t X 2 t= Yield at time t on a bond maturing at time t +  0 Let X 1 0 ... CHAPTER 32. A two-factor model (Duffie & Kan) 321 32.2 Zero-coupon bond prices The value at time t  T of a zero-coupon bond paying $1 at time T is B t; T =IE " exp  , Z T t X 1 u...

Ngày tải lên: 18/10/2013, 02:20

... portals. It is essentially the organizational culture and employee attitudes toward change that matter. Organizational Factors Organizational factors include organizational culture, opportunities ... employees, they may impact the remaining two. For instance, managers may develop an organizational culture that facilitates the implementation of changes, and specifically technological changes. To ... technology and particularly the Internet and the World Wide Web has dramatically changed how organizations operate. The most far-reaching changes to careers are coming from transformations of work and...

Ngày tải lên: 24/10/2013, 08:20

... transition. As mentioned in an earlier chapter, the density may attain values that are substantially higher than random close packing, and quite close to the crystalline limit [131, 132]. An analogous ... investigations. The model [174] is based on the generalisation of an earlier cellular automaton (CA) model [22, 75, 83, 165] of an avalanching sandpile. This version of the model contains only near-neighbour ... very asymmetrically shaped, and there is a strong preferred orientation, the nonequilibrium regime of granular dynamics will carry all the usual characteristics of ageing. Now recall that that...

Ngày tải lên: 01/11/2013, 08:20

Ngày tải lên: 13/12/2013, 11:36

Ngày tải lên: 18/12/2013, 10:08

... 4.2: Creating a Logical Data Model In this activity, you will use the skills learned in this module to define the relationships within a logical data model and produce a sample ER diagram for ... the Ferguson and Bardell, Inc. case study. In each of the two exercises in this activity, you analyze a single aspect of a logical data design. At the end of each exercise, the class will discuss ... cardinality and existence characteristics of each of the relationships defined in Exercise 1. ! Identify cardinality 1. For each relationship on your ER diagram, ask the question “How many...

Ngày tải lên: 21/12/2013, 06:16