Báo cáo khoa học: "EXPRESSING DISJUNCTIVE AND NEGATIVE FEATURE CONSTRAINTS CLASSICAL FIRST-ORDER LOGIC" pdf

... attribute-value feature structures of unification grammar and constraints on them can be axiomatized in classical first-order logic, which can express disjunctive and negative constraints. Because ... describing feature structures, but instead uses standard first-order logic to axiomatize attribute-value structures and express constraints on them, including disjun...

Ngày tải lên: 24/03/2014, 02:20

Ngày tải lên: 21/02/2014, 20:20

... performance of the above algorithms with two standard baselines, namely the First Sense Baseline (abbreviated as FS BL) and the Random Baseline (Random BL). 3.3 Results Our experiments concerned ... al., 1985) and, more in general, on the extraction of explicit information from machine-readable dic- tionaries (see, e.g., (Nakamura and Nagao, 1988; Ide and V ´ eronis, 1993)). Kozima an...

Ngày tải lên: 22/02/2014, 02:20

... with a strand of siRNA, and the other siRNA strand was subsequently annealed to the aptamer-conjugated strand. These aptamer–siRNA conjugates were able to access HIV- infected cells and silence ... Elbashir SM, Vandenburgh K, Manninga H, Scaringe SA, Weber K & Tuschl T (2003) Sequence, chemical, and structural variation of small interfering RNAs and short hairpin RNAs and the ef...

Ngày tải lên: 06/03/2014, 01:23

... probability of a noun n and a verb v as the product of the joint probability of the noun and verb classes that n and v belong to, and the conditional probabilities of n and v given their classes, ... probability of a noun and a verb is expressed as the product of the joint probability of the noun class and the verb class which the noun and the verb respectively belong...

Ngày tải lên: 17/03/2014, 07:20

... equations "x y" and a possibly empty conjunction CG of sort constraints "Ax" and feature constraints "xfy". We call CN the normalizer and and ¢G the graph of ¢. ... fixing a feature theory have their advantages. The construction of a standard model provides for a clear intuition and yields a com- plete feature theory (i.e., if ¢ is a c...

Ngày tải lên: 17/03/2014, 09:20

... Riloff, 1996; The- len and Riloff, 2002; Agichtein and Gravano, 2000; Ravichandran and Hovy, 2002; Mann and Yarowsky, 2003; Jijkoun et al., 2004; Mann and Yarowsky, 2005; Alfonseca et al., 2006; Pasca ... question and, there has been a plethora of work in the seed-based boot- strapping literature which addresses this problem (Ravichandran and Hovy, 2002; Thelen and Riloff, 2002...

Ngày tải lên: 17/03/2014, 22:20

... (polyols, sugars and amino acids). Fish hemoglobins (Hbs), which display a wide range of oxygen binding properties and allosteric effects, and are characterized extensively both structural and functionally, are ... Allosteric water and phosphate effects in Hoplosternum littorale hemoglobins Patricia Peres 1 , Walter F. de Azevedo Ju ´ nior 1 and Gustavo O. Bonilla-Rodriguez 2 1 De...

Ngày tải lên: 23/03/2014, 13:20

... one discourse and another, without need for recourse to elaborate dic- tionaries of sememes and sememic rules. Potential Applications The principles of transitive dependency and of syntac- ... essay writing system, and some improvements in automatic abstracting. QUESTION ANSWERING Given an English question and a set of statements some of which include answers and some of w...

Ngày tải lên: 23/03/2014, 13:20

... IS methods, it is difficult to understand them and see the differences. In this paper, we create a general and unified framework for IS methods. This framework also connects IS and coordinate descent (CD) ... IS and LBFGS methods. Results show that the CD method is more efficient. Notation n is the number of features. The total number of nonzeros in samples and the average number of no...

Ngày tải lên: 23/03/2014, 17:20