نتایج جستجو برای: stochastic inversion

تعداد نتایج: 169526  

2008
Dylan R. Harp Zhenxue Dai Andrew V. Wolfsberg Jasper A. Vrugt Bruce A. Robinson Velimir V. Vesselinov

[1] This study presents a stochastic inverse method for aquifer structure identification using sparse geophysical and hydraulic response data. The method is based on updating structure parameters from a transition probability model to iteratively modify the aquifer structure and parameter zonation. The method is extended to the adaptive parameterization of facies hydraulic parameters by includi...

2005
Hao Zhang Daniel Gildea

We present a version of Inversion Transduction Grammar where rule probabilities are lexicalized throughout the synchronous parse tree, along with pruning techniques for efficient training. Alignment results improve over unlexicalized ITG on short sentences for which full EM is feasible, but pruning seems to have a negative impact on longer sentences.

1995
T. Nygrén M. Markkanen M. Lehtinen K. Kaila

A software package originally developed for satellite radio tomography is briefly introduced and its use in two-dimensional auroral tomography is described. The method is based on stochastic inversion, i.e. finding the most probable values of the unknown volume emission rates once the optical measurements are made using either a scanning photometer or an auroral camera. A set of simulation resu...

Journal: :Journal of Mathematical Analysis and Applications 1980

Journal: :Journal of colloid and interface science 2002
Leslie Y Yeo Omar K Matar E Susana Perez de Ortiz Geoffrey F Hewitt

A speculative study on the conditions under which phase inversion occurs in agitated liquid-liquid dispersions is conducted using a Monte Carlo technique. The simulation is based on a stochastic model, which accounts for fundamental physical processes such as drop deformation, breakup, and coalescence, and utilizes the minimization of interfacial energy as a criterion for phase inversion. Profi...

Journal: :فیزیک زمین و فضا 0
مصطفی عباسی دانشجوی کارشناسی ارشد ژئوفیزیک، گروه فیزیک زمین، مؤسسه ژئوفیزیک دانشگاه تهران، ایران محمدعلی ریاحی دانشیار، گروه فیزیک زمین، مؤسسه ژئوفیزیک دانشگاه تهران، ایران

in exploration seismology, estimation of elastic parameters of rocks using seismic amplitudes is considered as inverse problems. nowadays, model-based and more generally optimization-based algorithms are of the most common methods of seismic inversion. these algorithms which are known as deterministic methods, are suffering from two main problems; first, vertical resolution of outputs is very l...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید