Báo cáo khoa học: "Hedge classification in biomedical texts with a weakly supervised selection of keywords" doc

... hedge classification in biomedical texts As regards the degree of human intervention needed, our classification and feature selection model falls within the category of weakly supervised machine learning. ... problem as a classification task and train a sta- tistical model to discriminate speculative and non- speculative assertions. This approach requires the availabili...

Ngày tải lên: 31/03/2014, 00:20

... Machine Learning Journal. Ryan Rifkin and Aldebaro Klautau. 2004. In defense of one-vs-all classification. Journal of Machine Learning Research, 5:101–141. Magnus Sahlgren. 2006. The Word-Space ... understanding the role of verbs in conveying se- mantics of natural language (NL). Additionally, gen- eralization based on verb classification is central to many NL applications, rangi...

Ngày tải lên: 23/03/2014, 14:20

... semantic classification of biomedical terms and nouns, less work has been done on the (manual or automatic) semantic classification of verbs in the biomedical domain (Friedman et al., 2002; Hatzivassiloglou ... the challenging nature of biomedi- cal texts. They are complex both in terms of syn- tax and semantics, containing complex nominals, modal subordination, anaphoric l...

Ngày tải lên: 31/03/2014, 01:20

... scaffold protein binding a given enzyme partner and a scaffold that has an enzy- matic domain of the same type. An additional complicating factor is that there are many other signaling pathways ... dual-adapter for phosphotyrosine and 3-phosphoinositides; DD, death domain; FADD, Fas-associated protein with death domain; MAGUK, membrane-associated guanylate kinase; MYPT1, myosin phosph...

Ngày tải lên: 06/03/2014, 22:21

... examination of cues that are relevant for ad- dressee identification. Adjacency pairs and addressing - Adjacency pairs (AP) are minimal dialogic units that con- sist of pairs of utterances called ... (Goffman, 198 1a) ); and those ratified participants who are addressed. Ratified participants are those participants who are allowed to take part in conversation. Regarding hearers’ roles i...

Ngày tải lên: 08/03/2014, 21:20

... deviations appears prob- lematic as, intuitively, the strength of a classification should be independent of its variance. As a case in point, consider a set of instances in a debate all clas- sified as ... 145– 156. Swapna Somasundaran and Janyce Wiebe. 2009. Rec- ognizing stances in online debates. In ACL-IJCNLP, pages 226–234. Swapna Somasundaran, Galileo Namata, Janyc...

Ngày tải lên: 23/03/2014, 16:20

... using the SVM Tree kernel as relational classifier is that it allows only for binary classification so that we need to train several binary networks in a one-vs-all paradigm (see also (Rahman and ... performance over a variety of tasks (Lu and Getoor, 2003) and has been used in NLP for example for opinion mining (Somasun- daran et al., 2009). ICA is normally faster than Gibbs sampli...

Ngày tải lên: 30/03/2014, 17:20

... central to minimizing variation and bias, regardless of the later use of the data for quantitative analyses. Definitions of accuracy and pre- cision here are defined in accordance with Dohoo et al. [11]. ... consequences of variation and bias in relation to monitoring of animal disease incidence on herd and national level, causal analysis on national level, as well as estimati...

Ngày tải lên: 25/10/2012, 10:45

... im- portant. Leaving out the word again lead to the biggest decrease in the classification accuracy for a single feature but not so dramatically as in the role extraction task (62.2% accuracy, for a ... prob- ability of the class and the probability of the fea- tures given the class; they are the natural choice in cases with hidden variables (partially observed or missing dat...

Ngày tải lên: 17/03/2014, 06:20

... 34927; E-mail: sebela@prfholnt.upol.cz Abbreviations: ABA, 2-aminobenzaldehyde; ACA, 6-aminocaproic acid; BEA, 2-bromoethylamine; CAO, copper-containing amine oxidase; DABY, 1,4-diamino-2-butyne; DAPY, ... 0.1 M ammonium bicarbonate containing ACA as a reagent for trapping of the product aminoaldehyde, where several new peaks appeared. ACA itself is represented by a peak with m/z 132....

Ngày tải lên: 19/02/2014, 16:20