Báo cáo khoa học: "Learning Semantic Categories from Clickthrough Logs" pdf

... learning semantic categories, all the previous studies using web search logs rely on web search query logs. Therefore, we propose to use web search clickthrough logs to learn semantic categories. Joachims ... similar, if not identical, when they have the same clickthrough. Search clickthrough logs are thus potentially useful for learnin semantic categories. Clickthrough logs...

Ngày tải lên: 08/03/2014, 01:20

... NO-REL. train/test split from Table 1 and the feature sets: Syntactic The syntactic features from Section 4. Semantic The semantic features from Section 4. All Both syntactic and semantic features. All+Tmp ... 177–180, Columbus, Ohio, USA, June 2008. c 2008 Association for Computational Linguistics Learning Semantic Links from a Corpus of Parallel Temporal and Causal Relation...

Ngày tải lên: 08/03/2014, 01:20

... instances), from the TimeBank corpus annotated in TimeML (Pustejovky et al., 2003). The non- WSJ articles (mainly political and disaster news) include both print and broadcast news that are from ... two peaks in this distribution. One is from 5 to 7 in the natural logarithmic scale, which corresponds to about 1.5 minutes to 30 minutes. The other is from 14 to 17 in the natural l...

Ngày tải lên: 20/02/2014, 12:20

... language semantics from ambigous supervision. In Association for the Advancement of Artificial In- telligence (AAAI), pages 895–900. Percy Liang, Michael I. Jordan, and Dan Klein. 2009. Learning semantic ... (aspects) of the full semantic state, yet statements about the same aspects must not contradict each other. Simulta- neous inference of the semantic state for the non- contradictor...

Ngày tải lên: 07/03/2014, 22:20

... languages from non-parallel multilingual corpora in an unsupervised fashion. For this purpose, we assume a generative model for multilingual corpora, where each sentence is generated from a language ... borrowing from nearby languages, and 3) the innate abilities of humans (Chomsky, 1965). We assume hidden commonalities in syntax across languages, and try to extract a common grammar fr...

Ngày tải lên: 07/03/2014, 22:20

... mapping which does not arise from string operations but must instead be learned. We used the dataset created by Chen and Mooney (2008), which contains 1919 scenarios from the 2001–2004 Robocup ... generates each part of text from only one record, and thus it can only al- low an alignment to one record. 7 To cope with this incompatibility between the data and our notion of semantics, we...

Ngày tải lên: 17/03/2014, 01:20

... Extracting Semantic Roles from a Model of Eventualities Sylvie Ratt6 Universit6 du Qu6bec fi MontrSal / Linguistics ... The dilemma resulting from this challenge is well known: to require a univocal identification by each role results in an increase in their number while to abstract their semantic content gives ... C.P. 8888, Succ. "A" / Montreal, QC / H3C 3P8 e-mail...

Ngày tải lên: 17/03/2014, 08:20

... over the 92.3 us- ing only the Wiktionary lexicon. Of the true errors, the most common arose from semantically related words which had strong context feature correlations (see table 4(b)). We ... aria42,pliang,tberg,klein }@cs.berkeley.edu Abstract We present a method for learning bilingual translation lexicons from monolingual cor- pora. Word types in each language are charac- terized by...

Ngày tải lên: 31/03/2014, 00:20

... from corpora. The EX approach aims to construct a large and up-to- date transliteration lexicon from live corpora. Towards this objective, some have proposed extracting translation pairs from ... general, studies of transliteration fall into two categories: transliteration modeling (TM) and extraction of transliteration pairs (EX) from corpora. The TM approach models phoneme-ba...

Ngày tải lên: 31/03/2014, 01:20

... the semantic classes are common to words unlike senses; for learning the properties of a given class, we can use the data from various words. For instance, the noun crane falls into two semantic classes ... each part of speech) from the training data set. As labels, the seman- tic class (lexicographic file number) was extracted from the sense key of each instance. Testing data sets...

Ngày tải lên: 31/03/2014, 03:20