Báo cáo khoa học: "Knowing the Unseen: Estimating Vocabulary Size over Unseen Samples" pot

... of the 47th Annual Meeting of the ACL and the 4th IJCNLP of the AFNLP, pages 109–117, Suntec, Singapore, 2-7 August 2009. c 2009 ACL and AFNLP Knowing the Unseen: Estimating Vocabulary Size over ... capturing the relation between ex- pected vocabulary size and sample size is the estimator. Given a sample of size n, the sample serves to calculate the param...

Ngày tải lên: 23/03/2014, 16:21

... score is assigned the same (zero, the highest) rank as the source document, and the one with the largest score is assigned the lowest (C−1) rank; then ranks of other permutations are uni- formly ... than the source document. The entity transition features are then used to train a support vector machine ranker (Joachims, 2002) to rank the source docu- ments higher than the...

Ngày tải lên: 22/02/2014, 02:20

... issues. As part of the linguistic evaluation we wanted to determine the lexical coverage of the MT systems since only some of the systems provide figures on lexicon size in the documentation. ... obtained the triples in ta- ble 1. The first number in a triple is the percentage of positive counts in the high frequency class, the second number is the percentage of...

Ngày tải lên: 22/02/2014, 03:20

... call the “pretence space”. We use the term ‘reality’ to refer to the space outside the pretence where propo- sitions are about reality as the understander sees it. Currently ATT-Meta implements the ... com- monsensical view of the world, a within-pretence meaning would be that McEnroe starved Connors to death in the real, biological sense. The inferencing within the preten...

Ngày tải lên: 08/03/2014, 03:20

... large data sets. Each of the classes in the set is encoded as a bit vector such that, in the vector for class , the bit is one and all other bits are zero. Then, one-vs-other binary classifiers ... slash unit; the sec- ond (merged) combines the units in one single ut- terance. Although the merged classifier breaks the regular structure of the dialog, the results in Table 3 s...

Ngày tải lên: 17/03/2014, 04:20

... given annotation, they feature the number of times each of the tokens in the concept appears in the same query with each of the tokens in the instance, normalizing to the respective number of tokens. The procedure ... Actors’ etc., then the distribution over the hierarchy may incorrectly suggest that the left argument of acted-in is ‘American Actors’ rather than the...

Ngày tải lên: 17/03/2014, 22:20

... mitochondrial matrix, the transmembrane helix and the following  20 residues) is crucial to determin- ing the aggregation state of these proteins. The data therefore support the hypothesis that this ... close to the N-terminal trans- membrane helix anchoring the protein to the inner membrane of mitochondria [27]. Therefore, the N-ter- minal segment (containing the residue...

Ngày tải lên: 14/02/2014, 18:20

... between the M-OmpA and I-OmpA structures, and imply that critical modifica- tion(s) of OmpA occur in the periplasm. The effect of cOHB-modification of the C-terminal domain in the periplasm on the ... cOHBs in the M-OmpA sample than in the I-OmpA sample. This assay confirms the presence of cOHBs and gives the relative amounts of cOHBs in the two samples, but does not precis...

Ngày tải lên: 18/02/2014, 04:20

... in the refinement. The correctness of the model was checked using the procheck [43] and whatcheck [44] programs. The coordinates of the higher-resolution complex models have been deposited in the ... between the free and the bound forms. In the latter case, the line broadening caused by the dynamic process could be extremely large and unspecific, preventing the detecti...

Ngày tải lên: 18/02/2014, 16:20

Ngày tải lên: 18/02/2014, 16:20