Essays about: "node graph"

Showing result 26 - 30 of 94 essays containing the words node graph.

  1. 26. Reducing Polarization in Opinion Networks in the Presence of Stubborn Leaders

    University essay from Lunds universitet/Institutionen för reglerteknik

    Author : Samuel Selleck; [2022]
    Keywords : Technology and Engineering;

    Abstract : We study the problem of reducing polarization (variance) of opinions at stationarity in a directed weighted graph with node set divided into two groups: stubborn, initialized with a fixed opinion and regular who repeatedly update their opinion to the average of their out-neighbors, known as the DeGroot model with stubborn nodes. We show how the polarization can be minimized for a number of simple constraints, but that the problem in general is not convex. READ MORE

  3. 27. Using machine learning to visualize and analyze attack graphs

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Antoine Cottineau; [2021]
    Keywords : Attack graph; Graph visualization; Graph clustering; Network security; Node embedding; Attackgraf; grafvisualisering; grafklustering; nätverkssäkerhet; inbäddning av noder;

    Abstract : In recent years, the security of many corporate networks have been compromised by hackers who managed to obtain important information by leveraging the vulnerabilities of those networks. Such attacks can have a strong economic impact and affect the image of the entity whose network has been attacked. READ MORE

  4. 28. Traffic Prediction From Temporal Graphs Using Representation Learning

    University essay from KTH/Matematisk statistik

    Author : Andreas Movin; [2021]
    Keywords : Dynamic time warping DTW ; embedding; graph convolutional networks GCN ; graph neural networks GNN ; persistent homology; spectral graph theory; temporal graphs; topological data analysis TDA ; Dynamisk time warping DTW ; inbäddning; convolutional grafnätverk GCN ; neurala grafnätverk GNN ; persistent homologi; spektral graf teori; dynamisk graf; topologisk dataanalys TDA ;

    Abstract : With the arrival of 5G networks, telecommunication systems are becoming more intelligent, integrated, and broadly used. This thesis focuses on predicting the upcoming traffic to efficiently promote resource allocation, guarantee stability and reliability of the network. READ MORE

  5. 29. Money Laundering Detection using Tree Boosting and Graph Learning Algorithms

    University essay from KTH/Matematisk statistik

    Author : Rickard Frumerie; [2021]
    Keywords : Tree boosting; XGBoost; graph convolutional networks GCN ; node and edge neural networks NENN ; exploratory data analysis EDA ; anti money laundering AML ; financial graph networks.; Trädalgoritmer; XGBoost; convolutions grafnätverk GCN ; nod och kant neurala nätverk NENN ; utforskande dataanalys; penningtvättsbekämpning AML ; finansiella grafnätverk.;

    Abstract : In this masters thesis we focused on using machine learning methods for detecting money laundering in financial transaction networks, in order to demonstrate that it can be used as a complement or instead of the more commonly used rule based systems. The graph learning method graph convolutional networks (GCN) has been a hot topic in the field since they were shown to scale well with data size back in 2018. READ MORE

  6. 30. Visualization of multi-layered data in node networks

    University essay from Lunds universitet/Ergonomi och aerosolteknologi

    Author : Jacob Rosensköld; Magnus Sunesson; [2021]
    Keywords : Visualization; Interaction Design; Node networks; Graphs; Technology and Engineering;

    Abstract : Visualization is the discipline of representing information with visual elements. Data structures can benefit from visualization, enabling people deeper understanding of the structures. READ MORE