Báo cáo khoa học: "Semantic Tagging of Web Search Queries" ppt

... Proceedings of the 47th Annual Meeting of the ACL and the 4th IJCNLP of the AFNLP, pages 861–869, Suntec, Singapore, 2-7 August 2009. c 2009 ACL and AFNLP Semantic Tagging of Web Search Queries ... published work on semantic tagging of web search queries. Allan and Raghavan (2002) and Barr et al. (2008) study the linguistic structure of queries by performing part -o...

Ngày tải lên: 08/03/2014, 00:20

... noun phrases has used the web as a corpus. The use of hit counts from web search engines to obtain lexical information was introduced by Turney (2001). The idea of searching a large corpus ... in this paper was twofold. Firstly, we wanted to compare the performance of different machine learning algorithms on the task of map- ping from a vector of web frequencies of p...

Ngày tải lên: 20/02/2014, 12:20

... our super- sense tagging experiments. 6.1 Part of Speech Tagging and Chunking Our implementation of SEXTANT uses a maximum en- tropy POS tagger designed to be very efficient, tagging at around ... num- ber of contexts are large enough to ensure it is reliable. We have experimented with a wide range of cutoffs and the best performance on the 1.6 test set was achieved us- ing a min...

Ngày tải lên: 31/03/2014, 03:20

... Evaluation Sophia Katrenko Institute of Informatics University of Amsterdam the Netherlands katrenko@science.uva.nl Pieter Adriaans Institute of Informatics University of Amsterdam the Netherlands pietera@science.uva.nl Abstract This ... 7 binary relations from the training set of the SemEval-2007 competition, all definitions of which share the re- quirement of the syntactic clos...

Ngày tải lên: 08/03/2014, 01:20

... The semantic analysis of Japanese noun phrases of the form N1 no N2 is one of the difficult prob- lems which cannot be solved by the current ef- forts of many researchers. Roughly speaking, ... good result both of DBA and SBA. The precision of DBA, the ratio of correct analyses to detected anal- yses, was 77% (=137/(137+19+21)); the re- call of DBA, the ratio of cor...

Ngày tải lên: 08/03/2014, 06:20

... decision of gender had led to deterioration in MRR performance of the male names compared to the case where no prior information was assumed. Soft decision of gender yielded further gains of 17.1% ... the C-C corpus, out of the total of 4,507 characters, only 776 of them are for surnames. It is interesting to find that female given names are represented by a smaller set...

Ngày tải lên: 17/03/2014, 04:20

... degrees of factuality for events. None of the above references aim at detecting or annotating the focus of negation in natural language. Neither do they aim at carefully representing the meaning of ... representation of the affirmative counterpart after applying the pseudo-relation NOT over the fo- cus of the negation. This fact justifies and motivates the detection of the focus...

Ngày tải lên: 30/03/2014, 21:20

... overall Sciborg workflow, standoff annotation is used to store the different sets of annota- tions. For the purposes of this paper, however, we make use of the inline output of Oscar, which is SciXML ... parsing. Hence there is no analysis of the text above the level of the term, with the exception of acronym matching, which is dealt with below, and some treatment of the boldfa...

Ngày tải lên: 31/03/2014, 01:20

... classify 65.76% of adjectives, 71.39% of nouns and 52.84% of verbs. Future work will explore the use of the contextual information of the unknown words and the contex- tual information of the lexicons ... evaluation, any one of the categories of an am- biguous word is considered correct. 5.2 Result On the test set, the baseline predicts 53.50% of adjectives, 70.84% of...

Ngày tải lên: 31/03/2014, 03:20

... this kind of knowledge, insofar as they mark out the most salient aspects of the most frequently evoked concepts. In this pa- per we perform a multilingual exploration of the space of common-place ... which lie beyond the 200- snippet horizon of the original search. Based on this wide-ranging series of core samples (of 200 hits each) from across the web, Veale and Hao report th...

Ngày tải lên: 08/03/2014, 01:20