Báo cáo khoa học: "Learning to Grade Short Answer Questions using Semantic Similarity Measures and Dependency Graph Alignments" ppt

... weight vector w, takes in a foreign sen- tence f and returns a translated hypothesis h. The argmax operates in vector space and our goal is to find w leading to hypotheses on the Pareto Frontier. In ... between pareto vs. non-pareto points ignores the fact that 2nd-place non-pareto points may also lead to good practical solutions. A better approach may be to adopt a graded definitio...

Ngày tải lên: 19/02/2014, 19:20

... engine, and automatically annotating the snippets with tags and features for training a conditional random field model. At run- time, the model is used to extracting translation candidates ... query to a search engine to retrieve snippets, and generate features for each tokens in the same way as done in the training phase. We then use the trained model to tag the snippets,...

Ngày tải lên: 19/02/2014, 19:20

... respect to two metrics: the order in which we visit landmarks and the side we pass them on. To determine the order P e visits landmarks we compute the minimum distance from P e to each landmark, and ... in) and allocentric (on which side we pass a landmark), combined with each spatial word. Allocentric terms such as above and below tend to be interpreted as going to the nort...

Ngày tải lên: 20/02/2014, 04:20

... Sutton and Barto, 1998). We applied the algo- rithm of (Singh et al., 2002), as their experimental set-up is similar to ours, constisting of: generation of (limited) exploratory dialogue data, using ... positions in the token stream of the utterance, also in combination with syntactic and semantic class labels. This allows us to define features that are particularly useful for reso...

Ngày tải lên: 20/02/2014, 12:20

... about 6 and 30 mil (between about 6 and 30 point chip board). Insulation Mineral wool, having a density of between 2.5 and 6.0 pounds per cubic foot and a thickness of between 1/4 and 1 and ... conducted ten random trials and then averaged the accuracy over the ten trials. In each random trial, 20% of the texts are randomly chosen to serve as the texts for testing, an...

Ngày tải lên: 20/02/2014, 19:20

Ngày tải lên: 22/02/2014, 03:20

... taxonomically restricted to ‘Homo sapiens’, the enzyme was set to ‘none’, and the mass error tolerances for precursor and fragment ions were typically set to 0.15 u for qTOF MS ⁄ MS and 50 p.p.m. and 1 u, respectively, ... has a more polar and larger active site than MMP-7 and MMP-9 and hence tolerates such residues better. The low number or lack of cleavages by all three...

Ngày tải lên: 16/02/2014, 14:20

... buffer (pH 8.0), 150 mm NaCl and 2 mm CaCl 2 by ultrafiltration. Chromatography Liquid chromatography was performed at 4 °C using a fast protein purification liquid chromatography system (A ¨ kta Explorer Ô ; ... corresponding to the entire peak obtained using anion-exchange chromatography. In this control sample, the proportions were those of naturally occurring cellulosomes and the...

Ngày tải lên: 18/02/2014, 08:20

... of dengue and yellow fever. Both disease vectors are exquisitely adapted to living around humans and using human blood as a nutrient source to promote egg development. A basic under- standing of ... December 2008) doi:10.1111/j.1742-4658.2008.06860.x In anautogenous mosquitoes, egg development requires blood feeding and as a consequence mosquitoes act as vectors of numerous devast...

Ngày tải lên: 18/02/2014, 13:20

... posi- tion, i.e. using bag-of-words instead. Instead of error measures, we can also use accuracy measures that compute similarity between candidate and ref- erence translations in proportion to the number ... B LEU with unigram and bi- gram, i.e. N=2, for the purpose of explanation and call this B LEU-2. Using S1 as the reference and S2 and S3 as the candidate translat...

Ngày tải lên: 20/02/2014, 16:20