Results 11 to 20 of about 12,237 (267)

Disjunctive normal networks [PDF]

open access: yesNeurocomputing, 2016
Artificial neural networks are powerful pattern classifiers; however, they have been surpassed in accuracy by methods such as support vector machines and random forests that are also easier to use and faster to train. Backpropagation, which is used to train artificial neural networks, suffers from the herd effect problem which leads to long training ...
Mehdi Sajjadi   +2 more
openaire   +2 more sources

Mental Models for the Negation of Conjunctions and Disjunctions

open access: yesEurope's Journal of Psychology, 2014
This study investigates why reasoning that involves negation is extremely difficult. We presented participants with reasoning problems containing sentences with negation of conjunctions and disjunctions in order to test predictions derived from the ...
Guillermo Macbeth   +5 more
doaj   +1 more source

Disjunctive datalog

open access: yesACM Transactions on Database Systems, 1997
We consider disjunctive Datalog, a powerful database query language based on disjunctive logic programming. Briefly, disjunctive Datalog is a variant of Datalog where disjunctions may appear in the rule heads; advanced versions also allow for negation in the bodies which can be handled according to a semantics for negation in disjunctive ...
Eiter, T, Gottlob, G, Mannila, H
openaire   +1 more source

Angiosperm disjunction "Campos rupestres - restingas": a re-evaluation Disjunção de Angiospermas Campos Rupestres - Restingas: uma reavaliação

open access: yesActa Botânica Brasílica, 2007
A disjunct distribution pattern between the extrazonal formations of the campos rupestres (rocky grasslands) in the Espinhaço mountain range and the restingas (coastal strand vegetation) in Brazil has been proposed repeatedly for several flowering-plant ...
Ruy José Válka Alves   +2 more
doaj   +1 more source

An Evolutionary Study of Carex Subg. Psyllophorae (Cyperaceae) Sheds Light on a Strikingly Disjunct Distribution in the Southern Hemisphere, With Emphasis on Its Patagonian Diversification

open access: yesFrontiers in Plant Science, 2021
Carex subgenus Psyllophorae is an engaging study group due to its early diversification compared to most Carex lineages, and its remarkable disjunct distribution in four continents corresponding to three independent sections: sect.
Carmen Benítez-Benítez   +9 more
doaj   +1 more source

Three new species of Eupetersia Blüthgen 1928 (Hymenoptera, Halictidae) from the Oriental Region.

open access: yesEuropean Journal of Taxonomy, 2012
Three new species, Eupetersia (Nesoeupetersia) singaporensis sp. nov., collected in a mangrove swamp in Singapore, and Eupetersia (Nesoeupetersia) sabahensis sp.
Alain Pauly
doaj   +1 more source

Scalar and Ignorance Inferences Are Both Computed Immediately upon Encountering the Sentential Connective: The Online Processing of Sentences with Disjunction Using the Visual World Paradigm

open access: yesFrontiers in Psychology, 2018
Accounts based on the pragmatic maxim of quantity make different predictions about the computation of scalar versus ignorance inferences. These different predictions are evaluated in two eye-tracking experiments using a visual world paradigm to assess ...
Likan Zhan
doaj   +1 more source

Thirteen new records of ferns from Brazil

open access: yesBiodiversity Data Journal, 2015
Thirteen fern species are reported for the first time for Brazil. Among the new records, eight are from Acre state (Cyathea subincisa, Cyclodium trianae, Elaphoglossum stenophyllum, Hypoderris brauniana, Pleopeltis stolzei, Thelypteris arcana ...
Thais Almeida, Alexandre Salino
doaj   +1 more source

DESIGN AND SYNTHESIS OF TERNARY LOGIC ELEMENTS

open access: yesКомпютерні системи та інформаційні технології, 2022
The aim of this paper is creating some ternary elements. The threshold element of ternary logic on bipolar transistors and elements of ternary systems based on it are considered. The main disadvantages of this approach are identified. The multi-threshold
LARYSA MARTYNOVYCH   +3 more
doaj   +1 more source

Global positive polarity items and obligatory exhaustivity

open access: yesSemantics and Pragmatics, 2014
I argue for a distinction between two types of positive polarity items (PPIs) which has not been recognized so far. While for some PPIs, anti-licensing is a strictly local phenomenon, for other PPIs anti-licensing should be stated as a global condition.
Benjamin Spector
doaj   +1 more source

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