12,350 research outputs found
The neutral top-pion and the lepton flavor violating decays
Taking into account the constraints of the present experimental limit of the
process on the free parameters of topcolor-assisted
technicolor(TC2) models, we calculate the contributions of the neutral top-pion
to the lepton flavor violating(LFV) decays . Our results
show that the value of the branching ratio is larger than
that of in all of the parameter space and there is , which is far from the
reach of present or future experiments.Comment: 12 pages and 3 figures. To be published in J. Phys.
Topological and Algebraic Properties of Chernoff Information between Gaussian Graphs
In this paper, we want to find out the determining factors of Chernoff
information in distinguishing a set of Gaussian graphs. We find that Chernoff
information of two Gaussian graphs can be determined by the generalized
eigenvalues of their covariance matrices. We find that the unit generalized
eigenvalue doesn't affect Chernoff information and its corresponding dimension
doesn't provide information for classification purpose. In addition, we can
provide a partial ordering using Chernoff information between a series of
Gaussian trees connected by independent grafting operations. With the
relationship between generalized eigenvalues and Chernoff information, we can
do optimal linear dimension reduction with least loss of information for
classification.Comment: Submitted to Allerton2018, and this version contains proofs of the
propositions in the pape
Event-triggered autonomous platoon control against probabilistic sensor and actuator failures
This paper is concerned with event-triggered autonomous platoon control with probabilistic sensor and actuator failures. A new platoon model is established, in which the effect of eventtriggered scheme and probabilistic failures are involved. Based on the model, the criteria for the exponential stability and co-designing both the trigger parameters and the output feedback are derived by using the Lyapunov method. The theoretical results show that the proposed controller would be able to safely maintain a smaller inter-vehicle spacing and the platoon would be string stable. The effectiveness and advantage of the presented methodology are demonstrated by
numerical simulations
Partition Information and its Transmission over Boolean Multi-Access Channels
In this paper, we propose a novel partition reservation system to study the
partition information and its transmission over a noise-free Boolean
multi-access channel. The objective of transmission is not message restoration,
but to partition active users into distinct groups so that they can,
subsequently, transmit their messages without collision. We first calculate (by
mutual information) the amount of information needed for the partitioning
without channel effects, and then propose two different coding schemes to
obtain achievable transmission rates over the channel. The first one is the
brute force method, where the codebook design is based on centralized source
coding; the second method uses random coding where the codebook is generated
randomly and optimal Bayesian decoding is employed to reconstruct the
partition. Both methods shed light on the internal structure of the partition
problem. A novel hypergraph formulation is proposed for the random coding
scheme, which intuitively describes the information in terms of a strong
coloring of a hypergraph induced by a sequence of channel operations and
interactions between active users. An extended Fibonacci structure is found for
a simple, but non-trivial, case with two active users. A comparison between
these methods and group testing is conducted to demonstrate the uniqueness of
our problem.Comment: Submitted to IEEE Transactions on Information Theory, major revisio
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