Báo cáo khoa học: "Discriminative Language Modeling with Conditional Random Fields and the Perceptron Algorithm" pptx
... parame- ter has on the error rate, and then modifies the parameters to reduce the error rate based on this prediction. 2 Linear Models, the Perceptron Algorithm, and Conditional Random Fields This section ... Discriminative Language Modeling with Conditional Random Fields and the Perceptron Algorithm Brian Roark Murat Saraclar AT&T Labs - Research {roa...
Ngày tải lên: 23/03/2014, 19:20
... f t = ‘de’ 0, otherwise Note that it is the target word indexed by a t , rather than the index itself, which determines whether the feature is active, and thus the sparsity of the index label ... high translation score when paired with the. To discourage all of these French words from aligning with the, the best of these (la) is flagged as the best candidate. This al- low...
Ngày tải lên: 20/02/2014, 11:21
... The first template above, now a transducer, with affixes accepted, and the stem separated by brackets in the output. ble that the words in an acoustic signal will not have been present in the language ... com- pose with the word in several ways. Each of the suc- cessful compositions produces a finite state recog- nizer with brackets surrounding the stem. We use a script...
Ngày tải lên: 31/03/2014, 00:20
Báo cáo khoa học: "Natural Language Front-Ends to Databases: Design and the Customisation Bottleneck" pdf
Ngày tải lên: 18/03/2014, 02:20
Báo cáo khoa học: "Logarithmic Opinion Pools for Conditional Random Fields" ppt
... positions. These experts therefore focus on trying to model the distribution of a particular label. • Random consists of the monolithic CRF and a random partition of the features in the mono- lithic ... Kingdom miles@inf.ed.ac.uk Abstract Recent work on Conditional Random Fields (CRFs) has demonstrated the need for regularisation to counter the tendency of these models...
Ngày tải lên: 31/03/2014, 03:20
Tài liệu Báo cáo khoa học: "NATURAL LANGUAGE INTERACTION WITH MACHINES" doc
... probably the most natural of the natural -language modes. ~ence, a fascination exists with machines thac respond to spoken commands with synthetic speech responses to create a natural -language ... vast amounts of research and development effort have been expended in the search for systems that understand human speech and respond with synthetic speech, the goal of t...
Ngày tải lên: 21/02/2014, 20:20
Báo cáo khoa học: "Native Language Detection with Tree Substitution Grammars" pptx
... represents the work of Wong and Dras (2011a), the previous best result for this task. While in their work they report 80% accuracy with the CFG model, this is for a single sampling of the full ... in their reported range but with a much lower mean. The numbers we report are from our own implementation of their CFG tech- nique, and all results are averaged over 5 random sam...
Ngày tải lên: 07/03/2014, 18:20
Báo cáo khoa học: "Discriminative Pronunciation Modeling: A Large-Margin, Feature-Rich Approach" docx
... line marks the mean of the re- sults with means labeled, and the vertical red line indi- cates the mean plus and minus one standard deviation. achieve the same performance as PA. For the second ... confusion with our feature functions. is the length of the alignment and a i , b i ∈ F , for 1 ≤ i ≤ L. Here the a i are the intended articulatory variable values acco...
Ngày tải lên: 16/03/2014, 19:20
Báo cáo khoa học: "Grounded Language Modeling for Automatic Speech Recognition of Sports Video" doc
... both the interpo- lated text baseline and the grounded language model. This is due to the large discrepancy be- tween both the style and vocabulary of language about sports compared to the domain ... ASR with the grounded language model, ASR with the text-only interpolated lan- guage model, and closed captioning transcriptions. As with our previous evaluati...
Ngày tải lên: 17/03/2014, 02:20
Báo cáo khoa học: "Discriminative Sentence Compression with Soft Syntactic Evidence" doc
... words y j−1 and y j in the compression. These include the part-of-speech (POS) bigrams for the pair, the POS of each word individually, and the POS con- text (bigram and trigram) of the most recent ... in the original sentence between y j−1 and y j , if there were any. These include the POS of each dropped word, the POS of the dropped words con- joined w ith the...
Ngày tải lên: 24/03/2014, 03:20