94 research outputs found
A Survey on Delay-Aware Resource Control for Wireless Systems --- Large Deviation Theory, Stochastic Lyapunov Drift and Distributed Stochastic Learning
In this tutorial paper, a comprehensive survey is given on several major
systematic approaches in dealing with delay-aware control problems, namely the
equivalent rate constraint approach, the Lyapunov stability drift approach and
the approximate Markov Decision Process (MDP) approach using stochastic
learning. These approaches essentially embrace most of the existing literature
regarding delay-aware resource control in wireless systems. They have their
relative pros and cons in terms of performance, complexity and implementation
issues. For each of the approaches, the problem setup, the general solution and
the design methodology are discussed. Applications of these approaches to
delay-aware resource allocation are illustrated with examples in single-hop
wireless networks. Furthermore, recent results regarding delay-aware multi-hop
routing designs in general multi-hop networks are elaborated. Finally, the
delay performance of the various approaches are compared through simulations
using an example of the uplink OFDMA systems.Comment: 58 pages, 8 figures; IEEE Transactions on Information Theory, 201
The Power of Online Learning in Stochastic Network Optimization
In this paper, we investigate the power of online learning in stochastic
network optimization with unknown system statistics {\it a priori}. We are
interested in understanding how information and learning can be efficiently
incorporated into system control techniques, and what are the fundamental
benefits of doing so. We propose two \emph{Online Learning-Aided Control}
techniques, and , that explicitly utilize the
past system information in current system control via a learning procedure
called \emph{dual learning}. We prove strong performance guarantees of the
proposed algorithms: and achieve the
near-optimal utility-delay tradeoff
and possesses an convergence time.
and are probably the first algorithms that
simultaneously possess explicit near-optimal delay guarantee and sub-linear
convergence time. Simulation results also confirm the superior performance of
the proposed algorithms in practice. To the best of our knowledge, our attempt
is the first to explicitly incorporate online learning into stochastic network
optimization and to demonstrate its power in both theory and practice
The Power of Online Learning in Stochastic Network Optimization
In this paper, we investigate the power of online learning in stochastic
network optimization with unknown system statistics {\it a priori}. We are
interested in understanding how information and learning can be efficiently
incorporated into system control techniques, and what are the fundamental
benefits of doing so. We propose two \emph{Online Learning-Aided Control}
techniques, and , that explicitly utilize the
past system information in current system control via a learning procedure
called \emph{dual learning}. We prove strong performance guarantees of the
proposed algorithms: and achieve the
near-optimal utility-delay tradeoff
and possesses an convergence time.
and are probably the first algorithms that
simultaneously possess explicit near-optimal delay guarantee and sub-linear
convergence time. Simulation results also confirm the superior performance of
the proposed algorithms in practice. To the best of our knowledge, our attempt
is the first to explicitly incorporate online learning into stochastic network
optimization and to demonstrate its power in both theory and practice
Sleeping Beauties Cited in Patents: Is there also a Dormitory of Inventions?
A Sleeping Beauty in Science is a publication that goes unnoticed (sleeps)
for a long time and then, almost suddenly, attracts a lot of attention (is
awakened by a prince). In our foregoing study we found that roughly half of the
Sleeping Beauties are application-oriented and thus are potential Sleeping
Innovations. In this paper we investigate a new topic: Sleeping Beauties that
are cited in patents. In this way we explore the existence of a dormitory of
inventions. We find that patent citation may occur before or after the
awakening and that the depth of the sleep, i.e., citation rate during the
sleeping period, is no predictor for later scientific or technological impact
of the Sleeping Beauty. Inventor-author self-citations occur only in a small
minority of the Sleeping Beauties that are cited in patents, but other types of
inventor-author links occur more frequently. We analyze whether they deal with
new topics by measuring the time-dependent evolution in the entire scientific
literature of the number of papers related to both the precisely defined topics
as well as the broader research theme of the Sleeping Beauty during and after
the sleeping time. We focus on the awakening by analyzing the first group of
papers that cites the Sleeping Beauty. Next, we create concept maps of the
topic-related and the citing papers for a time period immediately following the
awakening and for the most recent period. Finally, we make an extensive
assessment of the cited and citing relations of the Sleeping Beauty. We find
that tunable co-citation analysis is a powerful tool to discover the prince and
other important application-oriented work directly related to the Sleeping
Beauty, for instance papers written by authors who cite Sleeping Beauties in
both the patents of which they are the inventors, as well as in their
scientific papers.Comment: 30 pages, 17 figure
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