Tài liệu Báo cáo khoa học: "Semantic Taxonomy Induction from Heterogenous Evidence" doc

... 801–808, Sydney, July 2006. c 2006 Association for Computational Linguistics Semantic Taxonomy Induction from Heterogenous Evidence Rion Snow Computer Science Department Stanford University Stanford, ... contrast, our algorithm flexibly incorporates evidence from multiple clas- sifiers over heterogenous relationships to optimize the entire structure of the taxonomy, using knowl- e...

Ngày tải lên: 20/02/2014, 12:20

... trees. Formally, define T Σ as the set of trees with symbols from alphabet Σ, and T Σ (A) as the set of all trees in T Σ∪A where symbols from A only occur at the leaves. Then an RTG is a tuple (Q, ... initial state, and R is a set of grammar rules of the form q → t, where q is a state from Q and t is a tree from T Σ (Q). A rule typically consists of a parent state (left) and its child...

Ngày tải lên: 19/02/2014, 19:20

... comparative sentences from text documents. This paper first investigates many comparative sentences referring to pre- vious studies and then defines a set of compar- ative keywords from them. A sentence ... is one of the features from the sentence of Ex2 in section 3.1. 5 Experimental Results Three trained human annotators compiled a cor- pus of 277 online documents from various...

Ngày tải lên: 20/02/2014, 09:20

... 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

Ngày tải lên: 19/02/2014, 19:20

... are essen- tial to the future development of MT. Some additional incentive may also be derived from the recent indications that Russian MT spe- cialists have been working for some time on a ... terms of sure translation. By sure translation is meant a sort of one-to- one semantic mapping from the words of the source language to the best possible "mots justes " of the tar...

Ngày tải lên: 19/02/2014, 19:20

... have n vectors represented as C = {v k  v(s k ), k = 1, . . . , n} converted from sentences ac- cording to (7). From C, we construct an n × n sim- ilarity matrix M, in which each element M kk ′ is a ... this section. Two types of data from different sources are collected for this work. The first type of data, called A-data, is a travel infor- mation data set harvested from the databas...

Ngày tải lên: 20/02/2014, 05:20

... preposition or simple verb. For example, the query “morning ex- ercise” returns 133,000 results from the Yahoo search engine, and a query for the phrase “exercise in the morning” returns 47,500 ... noun, a modifier and a “joining term” that links them. Some algorithm can then be used to map from joining term frequencies to semantic relations and so find the correct relation for the...

Ngày tải lên: 20/02/2014, 12:20

... the binding pocket and 7.75 A ˚ from the T1 copper atom (Fig. 5D). Fig. 1. Sequence alignment of McoP with CotA laccase from Bacillus subtilis (1GSK) and CueO from Escherichia coli (1KV7). The ... metallo-oxidase from Aquifex aeolicus. Biochim Biophys Acta 1794, 75–83. 5 Fernandes AT, Soares CM, Pereira MM, Huber R, Grass G & Martins LO (2007) A robust metallo-oxidase from the h...

Ngày tải lên: 18/02/2014, 04:20

... manage- ment from the user and present an intuitive, user-friendly interface from which this necessary metadata can be obtained. The kineticswizard can be launched auto- matically from the instrument ... web services. Kinetic data can be exported from SABIO-RK in SBML format and experimen- tal data exported from MeMo-RK in SBRML format. N. Swainston et al. Enzyme kinetics: from in...

Ngày tải lên: 18/02/2014, 04:20