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Showing 1 to 11 of 11 for “"Gittins"”.
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User adaptive Web morphing : an implementation of a Web-based Bayesian inference engine with Gittins' Index
… parts: the Bayesian Inference Engine, and the Gittins' Index Engine.
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Exploration and exploitation in Bayes sequential decision problems
… to improve longer term outcomes (exploration). Gittins indices provide an optimal method for a small but important subclass of these problems. Unfortunately the optimality of index methods does not hold generally and Gittins indices can be impractical to calculate for many problems. This has …
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Real-time adaptive morphing website modeled per user and optimized across users
… the Bayesian Inference Engine, and the Gittins' Optimization Engine. The website controller acts as the interface between the user input and the mathematical modeling of the user's cognitive styles. It uses the Bayesian Engine to update the model and the Gittins' Engine to select the …
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Autonomous adaptive acoustic relay positioning
… with an elegant solution in the form of Gittins indices. For an autonomous ocean vehicle traveling between distant waypoints, however, switching costs are significant. The multi-armed bandit with switching costs has no optimal index policy, so we have developed an adaptation of the …
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Practical applications of large-scale stochastic control for learning and optimization
… over an infinite horizon, then the celebrated Gittins index policy would be optimal. Unfortunately, the analysis there does not carry over to the non-discounted, finite-horizon problem. In this work, we propose a tightening sequence of 'optimistic' approximations to the Gittins index. We show …
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The Zero Touch Experience : intent based contextual morphing on mobile devices using localized keyword distributions
… uses a Bayesian inference system with Gittins index utilizing location, past behavior, search queries, as well as other data present on the phone to make an assessment about the user's purpose. Using this data, the application assembles the most relevant applications, offers deals and …
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Impact of Students' Perception of Safety on Academic Success
A student's perception of safety in a school will impact his or her academic achievement. If a student does not feel safe in a school, he or she will be distracted, and will have a diminished concentration span, lack of focus and increased anxiety, all of which will negatively impact his or her …
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Investigating Layered Electrically Conductive Metal-Organic Frameworks For Supercapacitor Applications
Supercapacitors are high-power energy storage devices that will play an important role in the transition to a low-carbon society. In recent years, layered electrically conductive metal-organic frameworks (MOFs) have emerged as one of the most promising electrode materials for next-generation …
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Bayesian Learning for Data-Efficient Control
… including a novel approximation to the Gittins index. Third, we take a step towards data efficient learning of high-dimensional control using Bayesian neural networks (BNN). Experimentally we show although filtering mitigates adverse effects of observation noise, much greater performance …
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Asymptotically optimal shapes for counting lattice points and eigenvalues
… maximization result of van den Berg, Bucur and Gittins. Further, Ariturk and Laugesen recently handled 0 < p < 1 by building on our results here. The case p = 1 remains open: which right triangles in the first quadrant (with two sides along the axes) will enclose the most lattice points for …
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Electronic structure and electronic-vibrational energy exchange in Rydberg states of calcium monofluoride
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1995.