Báo cáo khoa học: "An Unsupervised Approach to Prepositional Phrase Attachment using Contextually Similar Words" potx

... An Unsupervised Approach to Prepositional Phrase Attachment using Contextually Similar Words Patrick Pantel and Dekang Lin Department of Computing Science University of Alberta 1 Edmonton, ... Manitoba. Abstract Prepositional phrase attachment is a common source of ambiguity in natural language processing. We present an unsupervised corpus-based approach to prep...

Ngày tải lên: 08/03/2014, 05:20

... network-based approach to prepositional phrase attachment disam- biguation for real world texts. Although the use of semantic classes in this task seems intuitively to be adequate, methods employed to ... A Connectionist Approach to Prepositional Phrase Attachment for Real World Texts Josep M. Sopena and Agusti LLoberas and Joan L. Moliner Laboratory of Neurocomp...

Ngày tải lên: 31/03/2014, 04:20

... us access to general purpose knowledge bases that assert that similar( libya,rwanda)”. The approach we advocate in this paper is in some respects less ambitious than current approaches to discourse ... word pairs that are not likely to be good predictors of discourse relations. To test this hypothesis, we decided to carry out a second experiment that used as predictors only a subs...

Ngày tải lên: 20/02/2014, 21:20

... instruction to start using INGLISH. Ini- tially there is a preference to tt~ the mouse to explore the cov- erage and then to begin to incorporate some typing. We have not had any long-term use~ to ... In-line help is available. To assist the v/pist, automatic spelling correction, word completion, and automatic phrase completion are provided. INGLISH constrains users to...

Ngày tải lên: 21/02/2014, 20:20

... 18% longer time to issue than multimodal com- mands, implying multimodal input is faster. For example, it is easier to point to a location on a map using touch than using speech to describe it. ... integrated and sent to the DM. This is similar to Johnston et. al. (2002) who uses a 1 second wait period. 2. Two Inputs - In this method, multimodal input is assumed to c...

Ngày tải lên: 23/03/2014, 19:20

... phrases lead to spar- sity, we set λ to a relatively small value to allow us to bias against overly long phrases 4 . P m1 is the word-based Model 1 (Brown et al., 1993) probabil- ity of one phrase ... larger phrase table. We also evaluated the effectiveness of model- based phrase extraction compared to heuristic phrase extraction. Using the alignments from HIER, we cre- at...

Ngày tải lên: 20/02/2014, 04:20

... seeds are retrieved from the repository to train a decision list for NE classification. 3. The learned rules are applied to the NE candidates stored in the repository. 4. The proper names tagged ... 86.7% To benchmark the quality of the automatically constructed corpus (Table 2), the testing corpus is first processed by our parser and then saved into the repository. The reposi...

Ngày tải lên: 20/02/2014, 16:20

... O Overlap similarity 6 to the title: sim(S, T ) = |S∩T | min{|S|,|T |} (Edmundson, 1969) TITLE J Jaccard similarity to the title: sim(S, T ) = |S∩T | |S∪T | TITLE C Cosine similarity to the title: ... op- eration. 3 http://www.extractor.com/ 928 Today, graph-based text representations are be- coming increasingly popular, due to their abil- ity to enrich the document model with synta...

Ngày tải lên: 07/03/2014, 22:20

... presented here aims to address this problem. Our model provides an enabling foun- dation toward a linguistic approach by first shift- ing to a two-dimensional CFG framework. This permits us to construct ... 1078 Vancouver Computer 2002 1130 Victoria Phone 2001 818 Victoria Phone 2002 894 Victoria Computer 2001 968 Victoria Computer 2002 1024 Location Type Time Vancouver Victoria Phone...

Ngày tải lên: 08/03/2014, 02:21

... then fed to stan- dard phrase- based decoder to produce the optimal translation. Experiments show that, for the NIST MT-05 task of Chinese -to- English translation, the proposal leads to BLEU improvement ... Introduction The phrase- based approach has been considered the default strategy to Statistical Machine Translation (SMT) in recent years. It is widely known that the phrase...

Ngày tải lên: 31/03/2014, 01:20