Báo cáo khoa học: "Compositional Matrix-Space Models of Language" potx

... applications of topic models. Section 3 describes the models used in our exper- iments. Section 4 provides details of the experi- mental design. Section 5 presents results for our models on the task of ... top- ical structure of documents can be adapted to learn probabilistic models of selectional prefer ence. These models are especially effective for estimat- ing plausibi...

Ngày tải lên: 07/03/2014, 22:20

... states of each of the two models are unseen and must be inferred from the words. The problem of language understanding, then, is to recover the most likely meaning structure given a sequence of ... 92]. Hidden understanding models are capable of learning a variety of meaning representations, ranging from simple domain-specific representations, to ones at a level of deta...

Ngày tải lên: 08/03/2014, 07:20

... Vector-based models of semantic composition. In Proceedings of ACL-08: HLT, pages 236–244. Jeff Mitchell and Mirella Lapata. 2009. Language models based on semantic composition. In Pro- ceedings of the ... Penn Department of Computer Science University of Toronto Toronto, ON, M5S 3G4, Canada {jcheung,gpenn}@cs.toronto.edu Abstract A major focus of current work in distri- butio...

Ngày tải lên: 17/03/2014, 22:20

... achieves. As a result of the assumption of symmetry, both these models are ‘bag of words’ models and word order insensitive. Relaxing the assumption of sym- metry in the case of the simple additive ... function of the tensor product of u and v, then we obtain multi- plicative models: p = Cuv (4) where C is a tensor of rank 3, which projects the tensor product of u and...

Ngày tải lên: 23/03/2014, 17:20

... developing cognitively plausible models of human language processing. Developing computational models is of scientific importance in so far as models are im- plemented theories: models of language process- ing ... psycholinguis- tics is often oblivious of work in computational linguistics (CL). To test their theories, psycholin- guists construct computational models of hu-...

Ngày tải lên: 30/03/2014, 21:20

... Proceedings of the 47th Annual Meeting of the ACL and the 4th IJCNLP of the AFNLP, pages 620–628, Suntec, Singapore, 2-7 August 2009. c 2009 ACL and AFNLP Latent Variable Models of Concept-Attribute ... between the top 10 concepts of C(w) and any of the gold-standard concepts, or if C(w) is empty. The overalll precision of a given model is the average of the DRR scores of...

Ngày tải lên: 30/03/2014, 23:20

... important but often ignored requirement of developmental compatibility. One of the most significant findings in child lan- guage research of the past decade is that different aspects of syntactic ... ignored in the for- mal studies of language acquisition. In the rest of this section, I show that if this condition is taken se- riously, previous models of language acquisi...

Ngày tải lên: 20/02/2014, 19:20

... weather. Overlapping of (yesterday> and a T- phase of (bad weather>. (3) John worked the whole evening. A T-phase of ( evening> is contained in a T-phase of (John works>. (for ... by joining all phases of P1 that are not seperated ~o - 199 - from each other and have the same value ql(Pl). So the intervals of alt(P I) are unions of intervals of PI&apos...

Ngày tải lên: 22/02/2014, 10:20

... a vector v of numerical values; one might, e.g., think of the level of excitation of neurons. Then, an external stimulus or signal, such as a perceived word, will result in a change of the mental ... underlying word space models; e.g., the models of Widdows (2008) and Giesbrecht (2009) feature dimensionality reduction while that of Mitchell and Lapata (2008) does not. In the...

Ngày tải lên: 07/03/2014, 22:20

... k train (w) denote the number of occurrences of w in the training corpus, and k test (w) denote the number of occurrences of w in the test corpus. We define the empirical discount of w to be d(w) = k train (w) ... one of 110M words of NYT from 2000 and 2001 (NYT00+01), and one of 110M words of AFP from 2002, 2005, and 2006 (AFP02+05+06). In both cases, we compute ¯ d(i) and t...

Ngày tải lên: 20/02/2014, 04:20