Search Results for author: Georgios Theodoropoulos

Found 14 papers, 7 papers with code

Towards A Flexible Accuracy-Oriented Deep Learning Module Inference Latency Prediction Framework for Adaptive Optimization Algorithms

no code implementations11 Dec 2023 Jingran Shen, Nikos Tziritas, Georgios Theodoropoulos

In this paper, a deep learning module inference latency prediction framework is proposed, which i) hosts a set of customizable input parameters to train multiple different RMs per DNN module (e. g., convolutional layer) with self-generated datasets, and ii) automatically selects a set of trained RMs leading to the highest possible overall prediction accuracy, while keeping the prediction time / space consumption as low as possible.

Dynamic Data-Driven Digital Twins for Blockchain Systems

no code implementations7 Dec 2023 Georgios Diamantopoulos, Nikos Tziritas, Rami Bahsoon, Georgios Theodoropoulos

Our Digital Twin leverages DDDAS feedback loop, which is responsible for getting the data from the system to the digital twin, conducting optimisation, and updating the physical system.

Decision Making

A Digital Twin Approach for Adaptive Compliance in Cyber-Physical Systems: Case of Smart Warehouse Logistics

no code implementations11 Oct 2023 Nan Zhang, Rami Bahsoon, Nikos Tziritas, Georgios Theodoropoulos

Engineering regulatory compliance in complex Cyber-Physical Systems (CPS), such as smart warehouse logistics, is challenging due to the open and dynamic nature of these systems, scales, and unpredictable modes of human-robot interactions that can be best learnt at runtime.

Explainable Human-in-the-loop Dynamic Data-Driven Digital Twins

no code implementations19 Jul 2022 Nan Zhang, Rami Bahsoon, Nikos Tziritas, Georgios Theodoropoulos

DT can leverage fundamentals of Dynamic Data-Driven Applications Systems (DDDAS) bidirectional symbiotic sensing feedback loops for its continuous updates.

Decision Making Interpretable Machine Learning

A Baselined Gated Attention Recurrent Network for Request Prediction in Ridesharing

1 code implementation11 Jul 2022 Jingran Shen, Nikos Tziritas, Georgios Theodoropoulos

Ridesharing has received global popularity due to its convenience and cost efficiency for both drivers and passengers and its strong potential to contribute to the implementation of the UN Sustainable Development Goals.

Digital Twins for Dynamic Management of Blockchain Systems

no code implementations26 Apr 2022 Georgios Diamantopoulos, Nikos Tziritas, Rami Bahsoon, Georgios Theodoropoulos

Given that Blockchains are complex, dynamic dynamic systems, a dynamic approach to their management and reconfiguration at runtime is deemed necessary to reflect the changes in the state of the infrastructure and application.

Management

Knowledge Equivalence in Digital Twins of Intelligent Systems

1 code implementation15 Apr 2022 Nan Zhang, Rami Bahsoon, Nikos Tziritas, Georgios Theodoropoulos

Maintaining such an equivalent model is challenging, especially when the physical systems being modelled are intelligent and autonomous.

valid

Time-Efficient and High-Quality Graph Partitioning for Graph Dynamic Scaling

no code implementations18 Jan 2021 Masatoshi Hanai, Nikos Tziritas, Toyotaro Suzumura, Wentong Cai, Georgios Theodoropoulos

In the case of distributed graph processing, changing the number of the graph partitions while maintaining high partitioning quality imposes serious computational overheads as typically a time-consuming graph partitioning algorithm needs to execute each time repartitioning is required.

graph partitioning Distributed, Parallel, and Cluster Computing Databases Discrete Mathematics Data Structures and Algorithms Social and Information Networks

Online NEAT for Credit Evaluation -- a Dynamic Problem with Sequential Data

no code implementations6 Jul 2020 Yue Liu, Adam Ghandar, Georgios Theodoropoulos

In this paper, we describe application of Neuroevolution to a P2P lending problem in which a credit evaluation model is updated based on streaming data.

Performance Evaluation of Dynamic Scaling on MPI

1 code implementation30 Dec 2019 Masatoshi Hanai, Georgios Theodoropoulos

Our dynamic scaling implementation allows the new MPI processes from new hosts to communicate with the original ones immediately.

Distributed, Parallel, and Cluster Computing

Temporal Neighbourhood Aggregation: Predicting Future Links in Temporal Graphs via Recurrent Variational Graph Convolutions

1 code implementation21 Aug 2019 Stephen Bonner, Amir Atapour-Abarghouei, Philip T. Jackson, John Brennan, Ibad Kureshi, Georgios Theodoropoulos, Andrew Stephen McGough, Boguslaw Obara

Graphs have become a crucial way to represent large, complex and often temporal datasets across a wide range of scientific disciplines.

Social and Information Networks

TMIXT: A process flow for Transcribing MIXed handwritten and machine-printed Text

1 code implementation28 Apr 2019 Fady Medhat, Mahnaz Mohammadi, Sardar Jaf, Chris G. Willcocks, Toby P. Breckon, Peter Matthews, Andrew Stephen McGough, Georgios Theodoropoulos, Boguslaw Obara

In this work, we present a generic process flow for text recognition in scanned documents containing mixed handwritten and machine-printed text without the need to classify text in advance.

Exploring the Semantic Content of Unsupervised Graph Embeddings: An Empirical Study

2 code implementations19 Jun 2018 Stephen Bonner, Ibad Kureshi, John Brennan, Georgios Theodoropoulos, Andrew Stephen McGough, Boguslaw Obara

To explore this, we present extensive experimental evaluation from five state-of-the-art unsupervised graph embedding techniques, across a range of empirical graph datasets, measuring a selection of topological features.

Graph Embedding Graph Mining

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