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MEJJOUALI S., TADJ L.
Operations Research and Decisions
|
2023
|
vol. 33
|
issue 3
59-73
EN
We use optimal control theory to determine the optimal rate of change in the subscription fee and the optimal ratio of ad space to the total web page space for a web content provider. An optimal solution is obtained using the maximum principle approach and the model predictive control approach. Numerical experiments show that it is preferable to use the first approach when the planning horizon is short and the second approach when the planning horizon is long.
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Supervisory optimal control using machine learning for building thermal comfort

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Abdufattokhov S., Mahamatov N., Ibragimova K., Gulyamova D., Yuldashev D.
Operations Research and Decisions
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2022
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vol. 32
|
issue 4
EN
For the past few decades, control and building engineering communities have been focusing on thermal comfort as a key factor in designing sustainable building evaluation methods and tools. However, estimating the indoor air temperature of buildings is a complicated task due to the nonlinear and complex building dynamics characterised by the time-varying environment with disturbances. The primary focus of this paper is designing a predictive and probabilistic room temperature model of buildings using Gaussian processes (GPs) and incorporating it into model predictive control (MPC) to minimise energy consumption and provide thermal comfort satisfaction. The full probabilistic capabilities of GPs are exploited from two perspectives: the mean prediction is used for the room temperature model, while the uncertainty is involved in the MPC objective not to lose the desired performance and design a robust controller. We illustrated the potential of the proposed method in a numerical example with simulation results.
3
Publication available in full text mode
Content available

Internet digital content pricing and subscribers control

100%
Mejjouali S., Tadj L.
Operations Research and Decisions
|
2023
|
vol. 33
|
issue 3
EN
We use optimal control theory to determine the optimal rate of change in the subscription fee and the optimal ratio of ad space to the total web page space for a web content provider. An optimal solution is obtained using the maximum principle approach and the model predictive control approach. Numerical experiments show that it is preferable to use the first approach when the planning horizon is short and the second approach when the planning horizon is long.
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