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arXiv 1608.01795math.PRq-fin.TR
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极限订单簿模型的扩散近似

A diffusion approximation for limit order book models

Ulrich Horst, Dörte Kreher

摘要:

本文导出了一类具有非线性状态相关订单到达和取消动态的离散时间单边极限订单簿模型的扩散近似。离散时间序列被指定为一个$\R_+$值的最佳投标价格过程和一个$L^2_{loc}$值的交易量过程。证明了在适当的假设下,内插离散时间模型序列在局部意义下是相对紧的,且任意极限点满足一定的无穷维条件.在依赖结构的附加假设下,我们构造了两类模型,它们适合于一般框架,使得限制性的非线性方程具有唯一的解,从而离散动态收敛到局部意义上的扩散极限。

英文摘要:

This paper derives a diffusion approximation for a sequence of discrete-time one-sided limit order book models with non-linear state dependent order arrival and cancellation dynamics. The discrete time sequences are specified in terms of an $\R_+$-valued best bid price process and an $L^2_{loc}$-valued volume process. It is shown that under suitable assumptions the sequence of interpolated discrete time models is relatively compact in a localized sense and that any limit point satisfies a certain infinite dimensional SDE. Under additional assumptions on the dependence structure we construct two classes of models, which fit in the general framework, such that the limiting SDE admits a unique solution and thus the discrete dynamics converge to a diffusion limit in a localized sense.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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