Reliable extrapolation – simulation or prediction – of system output is an invaluable departure point for the control system design. For application of model-based techniques, the knowledge of the model structure is essential. It can be based purely on the physical point of view or estimated from process data while the system is considered as a black box. Mixing of both methods results in grey ...

Bertrand Rollin, CCS-2; Nicholas A. Denissen, Jon M. Reisner, Malcolm J. Andrews, XCP-4; Jimmy Fung, XCP-1 Computing requirements for simulating complex multi-physics flows are such that Reynolds averaged Navier-Stokes (RANS) models will remain the community’s chosen workhorse for years to come. Within applications of interest to LANL, such as compressible mixing, the Besnard Harlow Rauenzahn (...

Inference in general Ising models is difficult, due to high treewidth making treebased algorithms intractable. Moreover, when interactions are strong, Gibbs sampling may take exponential time to converge to the stationary distribution. We present an algorithm to project Ising model parameters onto a parameter set that is guaranteed to be fast mixing, under several divergences. We find that Gibb...

Models of HIV transmission and the AIDS epidemic generally assume random mixing among those infected with HIV and those who are not. For sexually transmitted HIV, this implies that individuals select sex partners without regard to attributes such as familiarity, attractiveness, or risk of infection. This paper formulates a model for examining the impact of nonrandom mixing on HIV transmission. ...

We suggest a simple composite model that induces the large flavor mixing of neutrino in the supersymmetric theory. This model has only one hypercolor in addition to the standard gauge group, which makes composite states of preons. In this model, 10 and 1 representations in SU(5) grand unified theory are composite states and produce the mass hierarchy. This explains why the large mixing is reali...

This paper presents our recent work for participation in the Second International Chinese Word Segmentation Bakeoff. According to difficulties, we divide word segmentation into several sub-tasks, which are solved by mixed language models, so as to take advantage of each approach in addressing special problems. The experiment indicated that this system achieved 96.7% and 97.2% in F-measure in PK...