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arXiv 2201.05316q-fin.MF
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基于Tsallis相对熵的不完全市场定价原理

Pricing principle via Tsallis relative entropy in incomplete market

Dejian Tian

摘要:

在不完全布朗运动市场环境下,引入了不可达$q$ -指数有界未定权益的定价原理.买方在"扭曲的Radon-Nikodym导数“下评估或有债权,并在一个等价鞅测度族上通过Tsallis相对熵进行调整。证明了该定价原则是一个时间一致的、无仲裁的定价规则。更重要的是,这个定价原则被发现是密切相关的倒向随机微分方程的发电机$f(y)|z|^2$型。定价泛函与可实现索赔的价格相容。除了平移不变性外,定价原理还具有单调性、可拓性等优良性质,并在$q$ -指数效用下给出了极小鞅测度定价与条件确定等价定价之间的定价泛函.研究了模糊规避系数定价原理的渐近性态。

英文摘要:

A pricing principle is introduced for non-attainable $q$-exponential bounded contingent claims in an incomplete Brownian motion market setting. The buyer evaluates the contingent claim under the ``distorted Radon-Nikodym derivative'' and adjustment by Tsallis relative entropy over a family of equivalent martingale measures. The pricing principle is proved to be a time consistent and arbitrage-free pricing rule. More importantly, this pricing principle is found to be closely related to backward stochastic differential equations with generators $f(y)|z|^2$ type. The pricing functional is compatible with prices for attainable claims. Except translation invariance, the pricing principle processes lots of elegant properties such as monotonicity and concavity etc. The pricing functional is showed between minimal martingale measure pricing and conditional certainty equivalent pricing under $q$-exponential utility. The asymptotic behavior of the pricing principle for ambiguity aversion coefficient is also investigated.

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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