Network motifs are recurrent and statistically significant subgraphs or patterns of a larger graph.All networks, including biological networks, social networks, technological networks (e.g., computer networks and electrical circuits) and more, can be represented as graphs, which include a wide variety of subgraphs.. Network motifs are sub-graphs that repeat themselves in a …

Apr 29, 2025 · In a social network graph, people are nodes and friendships are edges, the goal is to predict if a connection should exist between two nodes. Link prediction is a very popular topic! It can be used to recommend friends in social networks, suggest products on e-commerce sites or movies on Netflix, or predict protein interactions in biology. In ...

1 day ago · Aspect-level sentiment classification (ALSC) aims to predict the sentiment polarity of specific aspects in the input text. In recent years, given the advantages of graph neural networks (GNNs) in capturing structural information, an increasing number of studies have integrated them with dependency trees for ALSC, achieving state-of-the-art results.

Apr 24, 2025 · Machine learning has emerged as a promising approach for predicting molecular properties of proteins, as it addresses limitations of experimental and traditional computational methods. Here, we introduce GSnet, a graph neural network (GNN) trained to predict physicochemical and geometric properties including solvation-free energies, diffusion constants, and hydrodynamic radii, based on three ...

A directed tree, [3] oriented tree, [4] [5] polytree, [6] or singly connected network [7] is a directed acyclic graph (DAG) whose underlying undirected graph is a tree. A polyforest (or directed forest or oriented forest) is a directed acyclic graph whose underlying undirected graph is a forest.

In the field of graph theory, a tree is a fundamental concept that plays a significant role in understanding and analyzing various types of networks or graphs. A tree is a specific type of undirected graph that exhibits a hierarchical structure without any cycles or loops.

May 3, 2023 · A tree is a fundamental data structure that forms the backbone of computer science and graph theory. It consists of nodes connected by edges, with a unique property: it does not contain cycles.

Graph Theory Trees - Explore the fundamentals of trees in graph theory, including types, properties, and applications. Learn how to utilize trees for efficient data representation.

This chapter will cover trees, spanning tree, directed graph, subgraph minimum spanning tree, minimum cost spanning tree, Kruskal’s algorithm, and binary search trees (BST). Not a tree, in graph theory:

Feb 24, 2012 · Tree Definition: A tree in network analysis is defined as a set of branches that include all nodes of the network without forming any closed paths. Twigs : The branches of a tree are known as twigs, and they connect all nodes without loops.