Báo cáo khoa học: "Relation Extraction Using Label Propagation Based Semi-supervised Learning" potx

... the labeling function. To the best of our knowledge, no work has been done on using graph based semi-supervised learning algorithms for relation extraction. Here we inves- tigate a label propagation ... LP based relation extraction method can use the graph structure to smooth the labels of unlabeled examples. Therefore, the labels of unlabeled exam- ples are determined not only...

Ngày tải lên: 08/03/2014, 02:21

... 78% 54% 5 90% 82% previous 5 86% 78% method 5.4 Keyword extraction experiment We have conducted keyword extraction ex- periment using the method with 141 feature vectors (our method), 5 ... be- cause the number of domains was few. In this paper, we propose a method for key- word extraction using term-domain interdepen- dence in order to cope with these two problems. The...

Ngày tải lên: 20/02/2014, 18:20

... with the litera- ture findings using standard features and polyno- mial SVMs, e.g. 87.1% 6 in (Pradhan et al., 2004). Second, in tables 2 and 3, we report the results using all available training ... FrameNet (Fill- more, 1982). Regarding the classification properties, we stud- ied the argument labeling accuracy of ST and SST kernels and their combinations with the standard features (Gildea...

Ngày tải lên: 08/03/2014, 21:20

... trigger pair. 5 MI-Trigger -based Modeling As discussed above, we can restrict the number of the trigger pairs using a reasonable window size, select the trigger pairs using average mutual information ... short distance by using the word bigram model. Conclusion This paper proposes a new MI-Trigger -based modeling approach to capture the preferred relationships between words...

Ngày tải lên: 23/03/2014, 19:20

... sentences. And our decoder is based on forest -based tree-to- string translation model (Mi et al. 2008). Our training corpus consists of 2.56 million sentence pairs. Forest -based rule extractor (Mi ... translation. For convenience, we label the three translation ver- sions of sub-sentence 1 as A1, A2, and A3, re- spectively. Similarly, B1, B2, C1, C2 are also labels of translation...

Ngày tải lên: 31/03/2014, 00:20

... proteins were collected onto glass fiber filters using a cell harvester, washed with 5% trichloroacetic acid (w/v), and radioactivity was counted using a liquid scintil- lation counter. Background ... was determined by UV spectroscopy, using an extinction coefficient of 10 280 M )1 Æcm )1 [22]. AAP concentrations were also determined spectrophotometri- cally using an extinction coefficien...

Ngày tải lên: 19/02/2014, 12:20

... quality labels get smaller score gains via propagation and are ranked lower. Label propagation is performed in (Talukdar et al., 2008; Talukdar & Pereira, 2010) based on mul- tiple instance -label ... (good or fair) labels in the top-k results (labels judged as “Fair” are counted as 0.5) Recall@k: The ratio of relevant labels in the top- k results to the total number of rele...

Ngày tải lên: 20/02/2014, 04:20

... class labels using the seed -based approach proposed by Van Durme and Pas¸ca (2008) (in particular Pas¸ca (2010)) which gen- eralizes Hearst (1992). Talukdar and Pereira (2010) use graph -based semi-supervised ... set of class labels and the resulting label lists are reranked using cluster purity measures. 561K labels for base noun phrases are collected. Table 1 shows an example set...

Ngày tải lên: 20/02/2014, 04:20

... event using the ROOT- LABEL dependency label. Finally, we link the ROOT node to each top-level event anchor, (those which do not serve as arguments to other events) again using the ROOT -LABEL label. ... listing the other two combinations. 7 Labels include ROOT -LABEL, THEME, CAUSE, and NULL. We assign the NULL label to edges which aren’t in the gold data. label distribution. Feat...

Ngày tải lên: 20/02/2014, 04:20

... and speculated information in text is an impor- tant Information Extraction task. This paper presents ScopeFinder, a linguistically moti- vated rule -based system for the detection of negation and speculation ... used stricter matching criteria based on exact match of both cues and their corresponding scopes 4 . CoNLL-2010 shared task participants applied a variety of rule -based and ma...

Ngày tải lên: 20/02/2014, 04:20