Results 31 to 40 of about 455,903 (307)

A Graph VAE and Graph Transformer Approach to Generating Molecular Graphs

open access: yesCoRR, 2021
We propose a combination of a variational autoencoder and a transformer based model which fully utilises graph convolutional and graph pooling layers to operate directly on graphs. The transformer model implements a novel node encoding layer, replacing the position encoding typically used in transformers, to create a transformer with no position ...
Joshua Mitton   +3 more
openaire   +2 more sources

Molecular graph generation with Graph Neural Networks

open access: yesCoRR, 2020
20 pages, 4 figures (2 figures are composed of double images, for a total of 6 images)
Pietro Bongini   +2 more
openaire   +2 more sources

Molecular cartooning with knowledge graphs

open access: yesFrontiers in Bioinformatics, 2022
Molecular “cartoons,” such as pathway diagrams, provide a visual summary of biomedical research results and hypotheses. Their ubiquitous appearance within the literature indicates their universal application in mechanistic communication. A recent survey of pathway diagrams identified 64,643 pathway figures published between 1995 and 2019 with 1,112,551
Brook E. Santangelo   +3 more
openaire   +3 more sources

Chemical applications of the Laplacian spectrum. VI On the largest Laplacian eigenvalue of alkanes [PDF]

open access: yesJournal of the Serbian Chemical Society, 2002
The largest Lapacian eigenvalue µ1 of the molecular graph is a quantity important in the theory of the photoelectron spectra of saturated hydrocarbons.
Gutman Ivan   +2 more
doaj   +1 more source

A Paradigmatic Approach to Find the Valency-Based K-Banhatti and Redefined Zagreb Entropy for Niobium Oxide and a Metal–Organic Framework

open access: yesMolecules, 2022
Entropy is a thermodynamic function in chemistry that reflects the randomness and disorder of molecules in a particular system or process based on the number of alternative configurations accessible to them.
Muhammad Usman Ghani   +5 more
doaj   +1 more source

Testing the quality of molecular structure descriptors. Vertex-degree-based topological indices [PDF]

open access: yesJournal of the Serbian Chemical Society, 2013
The correlation ability of 20 vertex-degree-based topological indices, occurring in the chemical literature, is tested for the case of standard heats of formation and normal boiling points of octane isomers. It is found that the correlation ability of
Gutman Ivan, Tošović Jelena
doaj   +1 more source

On Irregularity Measures of Some Dendrimers Structures

open access: yesMathematics, 2019
A graph is said to be a regular graph if all its vertices have the same degree, otherwise, it is irregular. Irregularity indices are usually used for quantitative characterization of the topological structure of non-regular graphs.
Wei Gao   +4 more
doaj   +1 more source

Eccentricity Based Topological Indices of an Oxide Network

open access: yesMathematics, 2018
Graph theory has much great advances in the field of mathematical chemistry. Chemical graph theory has become very popular among researchers because of its wide applications in mathematical chemistry.
Muhammad Imran   +5 more
doaj   +1 more source

Rigid Components in Molecular Graphs [PDF]

open access: yesAlgorithmica, 2007
We consider three-dimensional generic bar-and-joint realizations of squares of graphs. These graphs are also called molecular graphs due to their importance in the study of flexibility in molecules. The Molecular Conjecture, posed in 1984 by T.-S. Tay and W.
Bill Jackson, Tibor Jordán
openaire   +1 more source

Computing Edge Metric Dimension of One-Pentagonal Carbon Nanocone

open access: yesFrontiers in Physics, 2021
Minimum resolving sets (edge or vertex) have become an integral part of molecular topology and combinatorial chemistry. Resolving sets for a specific network provide crucial information required for the identification of each item contained in the ...
Sunny Kumar Sharma   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy