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Optimizing tree decompositions in MSO [PDF]

open access: yesLogical Methods in Computer Science, 2022
The classic algorithm of Bodlaender and Kloks [J. Algorithms, 1996] solves the following problem in linear fixed-parameter time: given a tree decomposition of a graph of (possibly suboptimal) width k, compute an optimum-width tree decomposition of the ...
Mikołaj Bojańczyk, Michał Pilipczuk
doaj   +9 more sources

Grammar Factorization by Tree Decomposition

open access: yesComputational Linguistics, 2021
We describe the application of the graph-theoretic property known as treewidth to the problem of finding efficient parsing algorithms. This method, similar to the junction tree algorithm used in graphical models for machine learning, allows automatic discovery of efficient algorithms such as the O(n4) algorithm for bilexical grammars of Eisner and ...
Daniel Gildea
doaj   +2 more sources

Decomposition and nutrient release from leaves of some common agroforestry tree/shrub species of Sudano-Sahelian West Africa [PDF]

open access: yesScientific Reports
Foliar inputs from indigenous agroforestry tree/shrub provide organic matter and nutrients to sustain crop production in the West African Sahelian region.
Siriki Fané   +5 more
doaj   +2 more sources

Root mixing effects on belowground decomposition depend on mycorrhizal type [PDF]

open access: yesNature Communications
While there has been significant progress in understanding how species mixing affects leaf litter decomposition, the consequences for belowground root decomposition remains less known.
Lei Jiang   +8 more
doaj   +2 more sources

Canonical trees of tree-decompositions [PDF]

open access: yesJournal of Combinatorial Theory, Series B, 2022
22 ...
Johannes Carmesin   +2 more
openaire   +2 more sources

A Review of Structural Characteristics of Satisfiability Problems [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban, 2023
Satisfiability ( SAT) problem is the basic problem of artificial intelligence, which is also a hard problem of NP. It has practical applications in machine learning, pattern recognition and natural language processing.
WANG Xiaofeng   +5 more
doaj   +1 more source

Structural Decomposition Trees [PDF]

open access: yesComputer Graphics Forum, 2011
AbstractResearchers and analysts in modern industrial and academic environments are faced with a daunting amount of multi‐dimensional data. While there has been significant development in the areas of data mining and knowledge discovery, there is still the need for improved visualizations and generic solutions.
Daniel Engel   +3 more
openaire   +1 more source

TREE LITTER PRODUCTION AND DECOMPOSITION IN FOREST ECOSYSTEMS UNDER BACKGROUND CONDITIONS AND INDUSTRIAL AIR POLLUTION [PDF]

open access: yesВопросы лесной науки, 2021
The paper provides an overview of Russian and foreign articles devoted to the study of the tree litter production and decomposition in forest ecosystems subjected to natural and anthropogenic factors.
E.A. Ivanova
doaj   +1 more source

Leaf Litter Decomposition and Nutrient Release of Three Native Tree Species in a Drained Tropical Peatland in Riau, Indonesia

open access: yesHayati Journal of Biosciences, 2022
The decomposition and its nutrient release were the key ecological process that had a broad role in the forest ecosystem. This study aimed to investigate the leaf litter decomposition rate and its nutrient release of three native tree species of tropical
Ahmad Junaedi   +3 more
doaj   +1 more source

Fair-Energy Trajectory Planning for Multi-Target Positioning Based on Cooperative Unmanned Aerial Vehicles

open access: yesIEEE Access, 2020
Owing to the flexibility and low cost, cooperative Unmanned Aerial Vehicles(UAVs) have been attractive in multi-target positioning recently. Although it is popular and easy to accomplish, positioning based on trilateration method still faces challenges ...
Yao Ji, Chao Dong, Xiaojun Zhu, Qihui Wu
doaj   +1 more source

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