Question

麻烦各位帮忙翻译一下 非常感谢

The main goal is to evaluate the performance of different models in terms of their ability to reduce the variances of an out-of-sample hedged portfolio and to test the statistical significance of performance improvements using SPA tests.

Answer 1

主要目标是评价不同模型的性能方面的能力，降低方差套期保值组合的抽样和测试的统计意义的测试性能改进使用温泉。

追问

we introduce the L_AB model, which incorporates two interesting time-series features; namely, the long memory effect of the basis on the conditional mean and the asymmetric effect of the basis on the time-varying variances and the time-varying correlation of spot and futures returns, respectively.
谢谢 麻烦再帮我翻下这段哦