Results 51 to 60 of about 7,225,806 (376)
A Computational Interpretation of Context-Free Expressions
, 2017 We phrase parsing with context-free expressions as a type inhabitation problem where values are parse trees and types are context-free expressions. We first show how containment among context-free and regular expressions can be reduced to a reachability ...
A Frisch +8 more
core +1 more source
On the symbol error probability of regular polytopes [PDF]
, 2010 An exact expression for the symbol error probability of the four-dimensional 24-cell in Gaussian noise is derived. Corresponding expressions for other regular convex polytopes are summarized.
Agrell, Erik, Karlsson, Magnus
core +2 more sources
The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada
Population Ecology, EarlyView.We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley +1 more source
States constrain-based algorithm for large scale regular expression matching
Tongxin xuebao, 2013 By analysis of state explosion in deterministic finite automata DFA,a novel algorithm Group2-DFA based on state constrains was proposed to reduce the memory usage.With the state constrains,states in NFA were classified into several groups.Group2-DFA ...
Wei HE, Yun-fei GUO, Hong-chao HU
doaj +2 more sources
A Trichotomy for Regular Simple Path Queries on Graphs [PDF]
, 2012 Regular path queries (RPQs) select nodes connected by some path in a graph. The edge labels of such a path have to form a word that matches a given regular expression.
Bagan, Guillaume +2 more
core +2 more sources
Network topology drives population temporal variability in experimental habitat networks
Population Ecology, EarlyView.Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu +3 more
wiley +1 more source
A General Framework for the Derivation of Regular Expressions
, 2012 The aim of this paper is to design a theoretical framework that allows us to perform the computation of regular expression derivatives through a space of generic structures.
Caron, Pascal +2 more
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occumb: An R package for site occupancy modeling of eDNA metabarcoding data
Population Ecology, EarlyView.This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley +1 more source
Cybernetics and Information Technologies, 2015 With regard to the inefficient application of a food processing information system due to shortage of the knowledge acquisition measure and self-updating function of knowledge, a method of constructing an online aided decision making knowledge base for ...
Wen Liu +5 more
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Helping tools for the regular expression author for test questions in LMS Moodle
Открытое образование (Москва), 2016 Composing regular expressions for test questions is often a difficult thing for the teachers; so many teachers avoid using regular expression questions. Similar problems hinder students learning regular expressions as a part of computer science.
O. A. Sychev, G. V. Terehov
doaj +1 more source