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- W4298367195 abstract "Consider the problem of learning the drift coefficient of a stochastic differential equation from a sample path. In this paper, we assume that the drift is parametrized by a high dimensional vector. We address the question of how long the system needs to be observed in order to learn this vector of parameters. We prove a general lower bound on this time complexity by using a characterization of mutual information as time integral of conditional variance, due to Kadota, Zakai, and Ziv. This general lower bound is applied to specific classes of linear and non-linear stochastic differential equations. In the linear case, the problem under consideration is the one of learning a matrix of interaction coefficients. We evaluate our lower bound for ensembles of sparse and dense random matrices. The resulting estimates match the qualitative behavior of upper bounds achieved by computationally efficient procedures." @default.
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- W4298367195 date "2011-03-08" @default.
- W4298367195 modified "2023-10-16" @default.
- W4298367195 title "Information Theoretic Limits on Learning Stochastic Differential Equations" @default.
- W4298367195 doi "https://doi.org/10.48550/arxiv.1103.1689" @default.
- W4298367195 hasPublicationYear "2011" @default.
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