Search Results for author: Georgios Zervas

Found 9 papers, 0 papers with code

Network Aware Compute and Memory Allocation in Optically Composable Data Centres with Deep Reinforcement Learning and Graph Neural Networks

no code implementations26 Oct 2022 Zacharaya Shabka, Georgios Zervas

Resource-disaggregated data centre architectures promise a means of pooling resources remotely within data centres, allowing for both more flexibility and resource efficiency underlying the increasingly important infrastructure-as-a-service business.

One-shot, Offline and Production-Scalable PID Optimisation with Deep Reinforcement Learning

no code implementations25 Oct 2022 Zacharaya Shabka, Michael Enrico, Nick Parsons, Georgios Zervas

Furthermore, once trained (which takes $\mathcal{O}(hours)$), the model generates actuator-unique PID parameters in a one-shot inference process that takes $\mathcal{O}(ms)$ in comparison to up to $\mathcal{O}(week)$ required for conventional tuning methods, therefore accomplishing these performance improvements whilst achieving up to a $10^6\times$ speed-up.

reinforcement-learning Reinforcement Learning (RL)

Maximum Likelihood Estimation of Differentiated Products Demand Systems

no code implementations24 Nov 2021 Greg Lewis, Bora Ozaltun, Georgios Zervas

We discuss estimation of the differentiated products demand system of Berry et al (1995) (BLP) by maximum likelihood estimation (MLE).

Resource Allocation in Disaggregated Data Centre Systems with Reinforcement Learning

no code implementations4 Jun 2021 Zacharaya Shabka, Georgios Zervas

Resource-disaggregated data centres (RDDC) propose a resource-centric, and high-utilisation architecture for data centres (DC), avoiding resource fragmentation and enabling arbitrarily sized resource pools to be allocated to tasks, rather than server-sized ones.

reinforcement-learning Reinforcement Learning (RL)

Random Walk for modelling Multi Core Fiber cross-talk and step distribution characterisation

no code implementations31 Aug 2020 Alessandro Ottino, Hui Yuan, Yunnuo Xu, Eric Sillekens, Georgios Zervas

In addition, this model is consistent with statistical analysis such as short term average crosstalk (STAXT), keeping the same convergence properties and it showed to be almost independent to time-window.

Experimental Analysis on Variations and Accuracy of Crosstalk in Trench-Assisted Multi-core Fibers

no code implementations7 Aug 2020 Hui Yuan, Alessandro Ottino, Yunnuo Xu, Arsalan Saljoghei, Tetsuya Hayashi, Tetsuya Nakanishi, Eric Sillekens, Lidia Galdino, Polina Bayvel, Zhixin Liu, Georgios Zervas

Space division multiplexing using multi-core fiber (MCF) is a promising solution to cope with the capacity crunch in standard single-mode fiber based optical communication systems.

Optimal Control of SOAs with Artificial Intelligence for Sub-Nanosecond Optical Switching

no code implementations22 Jun 2020 Christopher W. F. Parsonson, Zacharaya Shabka, W. Konrad Chlupka, Bawang Goh, Georgios Zervas

Novel approaches to switching ultra-fast semiconductor optical amplifiers using artificial intelligence algorithms (particle swarm optimisation, ant colony optimisation, and a genetic algorithm) are developed and applied both in simulation and experiment.

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