Results 121 to 130 of about 170,686 (340)

Hidden Abstract Stack Markov Models with Learning Process

Mathematics
We present hidden abstract stack Markov models (HASMMs) with their learning process. The HASMMs we offer carry the more expressive nature of probabilistic context-free grammars (PCFGs) while allowing faster parameter fitting of hidden Markov models (HMMs)
Mete Özbaltan
doaj   +1 more source

Substring parsing for arbitrary context-free grammars [PDF]

, 1991
J. Rekers, Wilco Koorn
openalex   +1 more source

Syphilis in pregnancy: A practical guide for prenatal care providers

International Journal of Gynecology &Obstetrics, EarlyView.
Abstract Syphilis during pregnancy remains a persistent global public health challenge. Untreated or inadequately treated syphilis infection during pregnancy contributes significantly to preventable perinatal morbidity and mortality. In the last five years, a resurgence of syphilis among pregnant women in several regions has led to a concerning rise in
Audrey Anne Desjardins, Eliana Amaral, Jezid Miranda, Dharmintra Pasupathy, Maria Luisa Martins, Edward Buga, David Aronoff, Deborah Money, Isabelle Boucoiran, for the FIGO Committee on Infections During Pregnancy and FIGO Committee on Health Systems Strengthening   +9 more
wiley   +1 more source

Derivational complexity of context-free grammars

Information and Control, 1982
Derivational time and space complexity of context-free grammars is studied. Minimal linear bounds are given for the number of derivation steps needed to derive a word (time complexity) and for the length of the longest sentential form needed in the derivation of a word (space complexity). Coefficients in linear estimations are grammar dependent, for \(\
openaire   +2 more sources

Cross‐continental transmission and host adaptation of Mycobacterium tuberculosis in China unveiled by population history reconstruction and adaptive evolution signal detection

iMetaOmics, EarlyView.
This study showed that four Mycobacterium tuberculosis complex (MTBC) sub‐lineages might be introduced into China 1000–400 years ago via Europe‐China dispersal routes, where they diversified into local clades, and later underwent population expansions that coincided with periods of climatic cooling and warfare.
Wei Wu, Zhuochong Liu, Haiqi Chen, Yuhan Tang, Zhonghua Jiang, Yiyang Zhang, Andong Zhang, Zhiwei Zhou, Robert S. Marks, Fan Zhang, Haibing Yuan, Yan Yu, Kangshan Mao, András Dinnyés, Nalin Rastogi, Jianping Xie, Qun Sun   +16 more
wiley   +1 more source

Linear DNA self-assembly with hairpins generates linear context-free grammars [PDF]

, 1999
Tony Eng
openalex   +1 more source

Gender Differences in Social Cognition and Their Association With Functioning in Individuals With Non‐Affective Psychosis

Journal of Clinical Psychology, EarlyView.
ABSTRACT Objectives Previous studies in non‐affective psychosis (NAP) consistently found that patients' functioning is associated with social cognition and gender, with higher functioning in female patients. This study investigated the impact of social cognition on the relationship between gender and functioning, and examined psychometric properties of
Anna‐Lena Bröcker, Helen Sauter, Dorothea von Haebler, Christiane Montag, Sandra Anna Just   +4 more
wiley   +1 more source

Computation of the N Best Parse Trees for Weighted and Stochastic Context-Free Grammars [PDF]

, 2000
Víctor Jiménez, Andrés Marzal
openalex   +1 more source

Context-free grammars with cancellation properties

Theoretical Computer Science, 1985
Let F(X) be the free group generated by a set X and \(X^*\) be the free monoid generated by X. If \(Q\subseteq X^*\times X^*\), then [Q] denotes the congruence of \(X^*\) generated by elements of Q and \(\) denotes the congruence of F(X) generated by the elements of Q.
openaire   +2 more sources

The association between attention‐deficit/hyperactivity disorder and narrative language: What is the role of executive function?

JCPP Advances, EarlyView.
Abstract Background Research suggests that Attention‐Deficit/Hyperactivity Disorder (ADHD) may be associated with narrative language (or storytelling) difficulties, and executive functioning is hypothesized to underlie this association. However, the contribution of executive function to the narrative language production of children with ADHD is unclear
Ida Bonnerup Jepsen, Cecilia Brynskov, Per Hove Thomsen, Charlotte Ulrikka Rask, Rikke Lambek   +4 more
wiley   +1 more source