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- W3200114974 abstract "Seismic wave velocity of underground rock plays important role in detecting internal structure of the Earth. Rock physics models have long been the focus of predicting wave velocity. However, construction of a theoretical model requires careful physical considerations and mathematical derivations, which means a long research process. In addition, various complicated situations often occur in practice, which brings great difficulties to the application of theoretical models. On the other hand, there are many empirical formulas based on real data. These empirical models are often simple and easy to use, but may be not based on physical principles and lack a proper formulation of physics. This work proposed a rational function neural networks (RafNN) for data-driven rock physics modeling. Based on the observation data set, this method can deduce a velocity model which not only satisfies the actual data distribution, but also has a proper mathematical form reflecting the inherent rock physics. The Gassmann's equation, which is the most commonly used theoretical model relating bulk modulus of porous rock to mineral composition, porosity and fluid, is perfectly reconstructed by using data-driven RafNN. The advantage of this method is that only observational data sets are required to extract model equations, and no complex mathematical and physical processes are involved. This work opens up for the first time a new avenue on constructing analytical expression of velocity models using neural networks and field data, which is of great interest for exploring the heterogeneous structure of the Earth." @default.
- W3200114974 created "2021-09-27" @default.
- W3200114974 creator A5075447428 @default.
- W3200114974 date "2021-09-17" @default.
- W3200114974 modified "2023-09-30" @default.
- W3200114974 title "Data-driven rational function neural networks: a new method for generating analytical models of rock physics" @default.
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- W3200114974 doi "https://doi.org/10.48550/arxiv.2109.08813" @default.
- W3200114974 hasPublicationYear "2021" @default.
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