Results 21 to 30 of about 3,903,221 (297)
On the Distance Spectral Radius of Trees with Given Degree Sequence
We consider the problem of maximizing the distance spectral radius and a slight generalization thereof among all trees with some prescribed degree sequence.
Dadedzi Kenneth +2 more
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Tree compression with top trees [PDF]
We introduce a new compression scheme for labeled trees based on top trees. Our compression scheme is the first to simultaneously take advantage of internal repeats in the tree (as opposed to the classical DAG compression that only exploits rooted subtree repeats) while also supporting fast navigational queries directly on the compressed representation.
Bille, Philip +3 more
openaire +4 more sources
Trees with Distinguishing Index Equal Distinguishing Number Plus One
The distinguishing number (index) D(G) (D′ (G)) of a graph G is the least integer d such that G has an vertex (edge) labeling with d labels that is preserved only by the trivial automorphism.
Alikhani Saeid +3 more
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Hash Trees Versus B-Trees [PDF]
Summary: The hash trees method of external hashing is known to have advantages for certain types of primary key distribution. In this paper the value of the method as a general indexing technique - for secondary keys as well as primary keys - is assessed, and comparison with the B-trees method is presented.
Bell, D. A., Deen, S. M.
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Antropogeni i tehnogeni uticaj na životnu sredinu pojačan je u poslednjoj deceniji XX veka. Taj trend se nastavlja i u XXI veku, a ofanziva globalizacije donosi nove ekološke probleme. Globalni ekološki problemi najviše pogađaju gradove.
Miloš Z. Petrović +2 more
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Singing Trees. Note su Tōru Takemitsu
The article examines the relationship between Western and Eastern aesthetics, analyzing some aspects of the musical production of Tōru Takemitsu, the great Japanese composer, now firmly included in the contemporary music “Western Canon”.
Pier Alberto, Porceddu Cilione
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Investigating Evaluation Measures in Ant Colony Algorithms for Learning Decision Tree Classifiers [PDF]
Ant-Tree-Miner is a decision tree induction algorithm that is based on the Ant Colony Optimization (ACO) meta- heuristic. Ant-Tree-Miner-M is a recently introduced extension of Ant-Tree-Miner that learns multi-tree classification models.
Abdelbar, Ashraf M. +2 more
core +1 more source
A century of tree line changes in sub-Arctic Sweden shows local and regional variability and only a minor influence of 20th century climate warming [PDF]
Aim Models project that climate warming will cause the tree line to move to higher elevations in alpine areas and more northerly latitudes in Arctic environments.
Callaghan, Terry V +5 more
core +1 more source
Pairs of trees in tree–tree triangulations
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Schaar, Günter, Skupień, Zdzisław
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Colourings of (k-r,k)-trees [PDF]
Trees are generalized to a special kind of higher dimensional complexes known as \((j,k)\)-trees ([L. W. Beineke, R. E. Pippert, On the structure of \((m,n)\)-trees, Proc. 8th S-E Conf. Combinatorics, Graph Theory and Computing, 1977, 75-80]), and which
M. Borowiecki, H. P. Patil
doaj +1 more source

