Báo cáo khoa học: "A Seed-driven Bottom-up Machine Learning Framework for Extracting Relations of Various Complexity" pdf

... 2007. c 2007 Association for Computational Linguistics A Seed-driven Bottom-up Machine Learning Framework for Extracting Relations of Various Complexity Feiyu Xu, Hans Uszkoreit and Hong Li Language ... Abstract A minimally supervised machine learning framework is described for extracting rela- tions of various complexity. Bootstrapping starts from...

Ngày tải lên: 23/03/2014, 18:20

... “7” is attached to the root and head nodes of both exemplars of NP Hans in Fig. 1, indicating their coreferentiality. For the sake of computational uniformity, we also attach reference tags to ... Testing for forward ellipsis: Gapping (includ- ing LDG), FCR, or SGF. This involves inspect- ing (recursively for every S-node) the set of im- mediate constituents (grammatical functio...

Ngày tải lên: 22/02/2014, 02:20

... Association for Computational Linguistics A Hierarchical Pitman-Yor Process HMM for Unsupervised Part of Speech Induction Phil Blunsom Department of Computer Science University of Oxford Phil.Blunsom@cs.ox.ac.uk Trevor ... induction which uniformly outperforms the existing state -of- the-art across all our corpora in 10 different languages. Moreover, the performance of our unsuper...

Ngày tải lên: 17/03/2014, 00:20

... with 45 lLof inhibitor solution (0–50 l M in water) for 5 min at 30 °C. Then, 5 lL of substrate, in dimethylformamide, was added to a final concentration of 2.5 m M , and formation of the product ... pET-PSKP-1 K . Inhibition of a-caseinolysis Inhibition of a-caseinolysis [24] was performed as follows. Bovine trypsin (% 80 pmol) was preincubated for 20 min at 37 °C with a 10- or...

Ngày tải lên: 30/03/2014, 13:20

... framework tries to employ various techniques for reducing the human effort, such as simplifying rules based on linguis- tic information and machine learning approaches. Our effort for the robustness ... because of the generalized linguistic information without decreasing the performance of the question analyzer. One of possible defects of using such linguis- tic informatio...

Ngày tải lên: 31/03/2014, 01:20

... trusted. Of course, the rise in recall is at the expense of a loss of precision. Overall, At-Least-N for intermediate ranges of N (N=5 for English and Chinese and N=2 for Arabic) performs best ... looking for (relations, coreference, named entities, etc.) even in the absense of a clear majority. This paper is organized as follows. In section 2, we give an overview of the...

Ngày tải lên: 20/02/2014, 12:20

... model for machine translation which makes use of both syntactic and surface information. The framework for our statistical model is as fol- lows. We assume the existence of a dependency tree for ... algorithm of (Quirk et al., 2005) defines heuristics for each of these problems. In case of one-to-many alignments, for example, the case of “constraints” aligning to the...

Ngày tải lên: 20/02/2014, 12:20

... techniques for the former, and introduction of example-based processing for the latter. 1 Introduction While the World-Wide Web (WWW) has quickly turned the Internet into a treasury of information ... will describe several methods for accelerating the system perfor- mance for the former, and describe the extension by using the example-based processing [4, 8] for the latt...

Ngày tải lên: 17/03/2014, 07:20

... ( , means of) , ( , means of) , ( , of) , ( , of) , ( , of communication), ( , of communication), and ( , of communication). Figure 4 shows an example of the best three phrase alignments for a Japanese-English ... by LDC 3 . For the phrase classi- fication based on the parts of speech of the head word, we used the first two layers of the Chasen’s part of speech tag for...

Ngày tải lên: 31/03/2014, 01:20

... Comparison of FE Bracketing Methods We compared the performance of the two methods for FE bracketing on the test set. Because of lim- ited time, we used smaller training sets than for the full ... thought of as predi- cate/argument structures, including descriptions of events, states, properties, and objects. FrameNet consists of the following main parts: • An ontology consist...

Ngày tải lên: 20/02/2014, 12:20