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Showing result 1 - 5 of 7 essays matching the above criteria.

1. 1. Anomaly Detection in the EtherCAT Network of a Power Station : Improving a Graph Convolutional Neural Network Framework

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

   Author : Niklas Barth; [2023]
   Keywords : Unsupervised Learning; Multivariate Time Series; Graph Convolutional Neural Networks; Anomaly Detection; Industrial Control System; EtherCAT; Power Station; Electricity Grid;

   Abstract : In this thesis, an anomaly detection framework is assessed and fine-tuned to detect and explain anomalies in a power station, where EtherCAT, an Industrial Control System, is employed for monitoring. The chosen framework is based on a previously published Graph Neural Network (GNN) model, utilizing attention mechanisms to capture complex relationships between diverse measurements within the EtherCAT system. READ MORE

3. 2. Multi-robot coordination and planning with human-in-the-loop under STL specifications : Centralized and distributed frameworks

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

   Author : Yixiao Zhang; [2023]
   Keywords : Multi-agent systems; Human-in-the-loop systems; Signal temporal logic; Cooperative control; ROS Implementation; Multi-agent-system; Människa-i-loop-system; Signaltemporallogik; Samarbetande styrning; ROS-implementering;

   Abstract : Recent urbanization and industrialization have brought tremendous pressure and challenges to modern autonomous systems. When considering multiple complex tasks, cooperation and coordination between multiple agents can improve efficiency in a system. READ MORE

4. 3. 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. 4. Dynamic Co-authorship Network Analysis with Applications to Survey Metadata

   University essay from Linnéuniversitetet/Institutionen för datavetenskap och medieteknik (DM)

   Author : Peter Johansson; [2020]
   Keywords : Network theory; social network analysis; dynamic networks; co-authorship networks; scientometrics; scholarly data;

   Abstract : Co-authorship networks are a particular sort of social networks representing authors collaborating on joint publications. Such networks are studied within the fields of bibliometrics and scientometrics. READ MORE

6. 5. Strategy Synthesis for Multi-Agent Systems with Imperfect Information and Imperfect Recall

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

   Author : August Heddini; Konrad Wihl; [2019]
   Keywords : ;

   Abstract : This report aims to study and compare currently available tools for uniform strategy synthesis in multi-player versus environment games of imperfect information and imperfect recall. These games are represented as a graph of game states, and goal sequences of states are typically represented using temporal logic formulae. READ MORE