Results 321 to 330 of about 2,853,341 (382)

An Object Grammar for Column-Convex Polyominoes

Annals of Combinatorics, 2004
In this paper we propose an object grammar decomposition for the classes of columnconvex, and directed column-convex polyominoes. As a consequence, we obtain the enumeration of such classes according to the semi-perimeter, thus giving a natural explanation of the fact that the generating functions of both the classes are algebraic.
E. Duchi, S. Rinaldi
semanticscholar   +5 more sources

Atlas: Grammar-based Procedural Generation of Data Visualizations

Visual .., 2021
We present Atlas, a procedural grammar for constructing data visualizations. Unlike most visualization grammars which use declarative specifications to describe visualization components, Atlas exposes the generative process of a visualization through a ...
Zhicheng Liu   +3 more
semanticscholar   +1 more source

From object algebras to attribute grammars [PDF]

open access: possibleACM SIGPLAN Notices, 2014
Oliveira and Cook (2012) and Oliveira et al. (2013) have recently introduced object algebras as a program structuring technique to improve the modularity and extensibility of programs. We analyze the relationship between object algebras and attribute grammars (AGs), a formalism to augment context-free grammars with attributes.
Tillmann Rendel   +2 more
openaire   +1 more source

General and specific effects of lexicon in grammar: determiner and object pronoun omissions in child Spanish.

Journal of Speech, Language and Hearing Research, 2012
PURPOSE This study explores the hypothesis that vocabulary growth can have 2 types of effects in morphosyntactic development. One is a general effect, where vocabulary growth globally determines utterance complexity, defined in terms of sentence length ...
A. Pérez-Leroux   +2 more
semanticscholar   +1 more source

A stochastic graph grammar for compositional object representation and recognition

Pattern Recognition, 2009
This paper illustrates a hierarchical generative model for representing and recognizing compositional object categories with large intra-category variance. In this model, objects are broken into their constituent parts and the variability of configurations and relationships between these parts are modeled by stochastic attribute graph grammars, which ...
Liang Lin   +3 more
semanticscholar   +3 more sources

Objective evaluation of inferred context-free grammars [PDF]

open access: possibleProceedings of ANZIIS '94 - Australian New Zealnd Intelligent Information Systems Conference, 2002
An infinite number of context-free grammars may be inferred from a given training set. The defensibility of any single grammar hinges on the ability to compare that grammar against others in a meaningful way. In keeping with the minimum description length principle, smaller grammars are preferred over larger ones, but only insofar as the small grammar ...
S. Legg   +3 more
openaire   +1 more source

Two-level grammar as an object-oriented requirements specification language

Proceedings of the Annual Hawaii International Conference on System Sciences, 2002
Two-level grammar (TLG) is proposed as an object-oriented requirements specification language with a natural language (NL) style but sufficiently formal to allow automatic transformation of the TLG specification into formal specifications in VDM++, an ...
Barrett R. Bryant, Beum-Seuk Lee
semanticscholar   +1 more source

Processing Learning Objects with Attribute Grammars

2009 Ninth IEEE International Conference on Advanced Learning Technologies, 2009
The services provided by learning object repositories are usually enabled by the processing of the metadata documents associated with these learning objects. This paper proposes a way to process these metadata documents, which are usually encoded in XML, through a framework called XLOP.
Antonio Sarasa-Cabezuelo   +2 more
openaire   +2 more sources

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