Results 41 to 50 of about 859,079 (303)

CYK Parsing over Distributed Representations

open access: yesAlgorithms, 2020
Parsing is a key task in computer science, with applications in compilers, natural language processing, syntactic pattern matching, and formal language theory.
Fabio Massimo Zanzotto   +2 more
doaj   +1 more source

Parallel context-free languages

open access: yesInformation and Control, 1974
<p>The relation between the family of context-free languages and the family of parallel context-free languages is examined in this paper. It is proved that the families are incomparable. Finally we prove that the family of languages of finite index is contained in the family of parallel context-free languages.</p><p>Information and ...
Rani Siromoney, Kamala Krithivasan
openaire   +3 more sources

Compound Probabilistic Context-Free Grammars for Grammar Induction [PDF]

open access: yesAnnual Meeting of the Association for Computational Linguistics, 2019
We study a formalization of the grammar induction problem that models sentences as being generated by a compound probabilistic context free grammar. In contrast to traditional formulations which learn a single stochastic grammar, our context-free rule ...
Yoon Kim, Chris Dyer, Alexander M. Rush
semanticscholar   +1 more source

Infant Embryonal CNS Tumors: Molecular Insights and Treatment Considerations for Contemporary Pediatric Neuro‐Oncology

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Embryonal tumors comprise the majority of malignant central nervous system (CNS) neoplasms diagnosed in children under 3 years of age. Compared with their counterparts in older children, these tumors exhibit distinct molecular biology and a more aggressive clinical phenotype, while their management is complicated by the heightened ...
Sudarshawn Damodharan   +3 more
wiley   +1 more source

The categorical contours of the Chomsky-Sch\"utzenberger representation theorem [PDF]

open access: yesLogical Methods in Computer Science
We develop fibrational perspectives on context-free grammars and on nondeterministic finite-state automata over categories and operads. A generalized CFG is a functor from a free colored operad (aka multicategory) generated by a pointed finite species ...
Paul-André Melliès, Noam Zeilberger
doaj   +1 more source

Interlanguage and Free Variation: A Case Study [PDF]

open access: yesMatn/Pizhūhī-i Adabī, 2006
This study attempts to investigate the existence of free variation in interlanguage; an issue that is sti11 a controversial debate among researchers in second language acquisition field.
majid amerian
doaj   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

open access: yesFEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes   +3 more
wiley   +1 more source

Absence of phase transition in random language model

open access: yesPhysical Review Research, 2022
The random language model, proposed as a simple model of human languages, is defined by the averaged model of a probabilistic context-free grammar. This grammar expresses the process of sentence generation as a tree graph with nodes having symbols as ...
Kai Nakaishi, Koji Hukushima
doaj   +1 more source

Büchi context-free languages

open access: yesTheoretical Computer Science, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zoltán Ésik, Szabolcs Iván
openaire   +1 more source

On line context free language recognition in less than cubic time(Extended Abstract)

open access: yesSymposium on the Theory of Computing, 1976
A new on-line context free language recognition algorithm is presented which is derived from Earley's algorithm and has several advantages over the original.
S. Graham, M. Harrison, W. Ruzzo
semanticscholar   +1 more source

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