a latent dirichlet allocation method for selectional preferences

... pseudo- disambiguation task. Additionally, because LDA-SP is based on a for- mal probabilistic model, it has the advantage that it can naturally be applied in many scenarios. For example, we can obtain ... however, avoids the drawbacks of traditional class-based ap- proaches (poor lexical coverage and ambiguity). LDA-SP achieves state-of-the-art performance on predictive tasks such as pseudo-disambiguation, and ... generative probabilistic models, which model each relation/argument combination as being gen- erated by a latent class variable. These classes are automatically learned from the data. This re- tains...

Ngày tải lên: 07/03/2014, 22:20

... specific selectional preferences, generalizing over manu- ally semantically annotated data using automat- ically syntactically annotated data. 4 Data We use FrameNet (Baker et al., 1998), a se- mantic ... seen headwords against error rate for a Jaccard similarity-based model (uniform weights). As can be seen, error rates reach a plateau at about 25 seen headwords for Jaccard. For other similarity ... isolated compar- isons of the two generalization paradigms that we are aware of, Gildea and Jurafsky’s (2002) task-based evaluation has found clustering- based approaches to have better coverage...

Ngày tải lên: 23/03/2014, 18:20

... learning approach that we use is that it is simpler and more general than that of Ando and Zhang (2005) and Suzuki and Isozaki (2008). Their methods dictate a particular choice of model and training ... certain word representations are preferable for certain tasks. Lin and Wu (2009) finds that the representations that are good for NER are poor for search query classification, and vice-versa. We apply ... train- ing of probabilistic neural nets by importance sampling. AISTATS. Blei, D. M., Ng, A. Y., & Jordan, M. I. (2003). Latent dirichlet allocation. Journal of Machine Learning Research, 3, 993–1022. Brown,...

Ngày tải lên: 20/02/2014, 04:20

... extract an error-rate in a way that doesn’t require manually tagged data. However, we also use an error-rate calculated from the CLC error tags to ob- tain an upper bound for the performance of an ... Essay Assessor (IEA) (Landauer et al., 2003) uses Latent Semantic Analysis (LSA) (Lan- dauer and Foltz, 1998) to compute the semantic sim- ilarity between texts, at a specific grade point, and a ... problem is viable, but the feature types are all fairly shallow, and the approach doesn’t make effi- cient use of the training data as a separate classifier is trained for each grade point. Recently,...

Ngày tải lên: 20/02/2014, 04:20

Ngày tải lên: 09/03/2014, 01:20

... filter language models: Tera-scale LMs on the cheap. In Proceedings of the 2007 Joint Con- ference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning ... programming has pro- duced a variety of software tools for solving these problems. However, at first blush our instances are much too large for readily-available set program- ming tools. Grammars ... the tractable range. Definition 2 A unary leaf (UL) is an element x in a partial order X,  such that x is maximal and x is the successor of exactly one other element. ULs are special because...

Ngày tải lên: 17/03/2014, 00:20

... items and the evaluation of areas are separate, it is possible for e.g. company management to define importance for areas and for e.g. expert panels to evaluate specific areas. This approach also ... methodological approaches supplement each other at least partially is known as a relative view. (Arbnor I & Bjerke B 1997). The advantages and disadvantages of a selected research strategy ... of an investment evaluation method are more useful for company management as part of a defined process than as occasional actions. Conceptual phase Pre-feasibility phase Feasibility phase...

Ngày tải lên: 18/03/2014, 02:20

... Document and its Application Risa Kitajima Ochanomizu University kitajima.risa@is.ocha.ac.jp Ichiro Kobayashi Ochanomizu University koba@is.ocha.ac.jp Abstract Recently, several latent topicanalysis methods such ... Multi-Document Summarization Based on Latent Semantic Indexing. Journal of Harbin Institute of Technology,12(1):91–94. Rachit Arora and Balaraman Ravindran. 2008. Latent dirichlet allocation based multi-document ... Suzuki, Takashi Uemura, Takuya Kida, and Hi- roki Arimura. 2010. Extension to word phrase on la- tent dirichlet allocation. Forum on Data Engineering and Information Management,i-6. Yee W. Teh, David...

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Ngày tải lên: 05/09/2013, 13:23

... Thus, in a process where air and water are in contact, water will always tend to adiabatic saturation temperature, as in the case of the adiabatic tunnel described before. To clarify what has been ... adiabatic saturation temperature of air. Air is cooled and humidified, gaining enthalpy. c- Water is at the adiabatic saturation temperature of inlet air. Air is cooled and humidified maintaining ... the air and water temperature reach the same value, called “adiabatic saturation temperature”, being the process known as “adiabatic saturation”. To define this temperature we can suppose a long...

Ngày tải lên: 05/09/2013, 16:10

Ngày tải lên: 03/01/2014, 19:35

... (MVR) evaluation and advanced interval methods (AIM) have been applied to evaluate the iteration formula (7), see Step 4, Section IV. In VNODE, an interval Taylor series method with QR factorization ... II-C. Although they are fairly efficient for exactly known initial states and parameters, they are sometimes insufficient for practical scenarios with uncertain but bounded initial states and parameters which ... optimal, and adaptive controllers. For nonlinear systems, robustness analysis with respect to uncertain initial states and parameters can be performed by calculating enclosures of all reachable states....

Ngày tải lên: 12/01/2014, 22:04