The adaptive Kalman filtering (AKF) based on intelligent information fusion algorithm has currently became an effective approach to enhance the integrated navigation system's robustness and accuracy.

针对当前自适应组合导航系统算法的研究趋势，总结了卡尔曼滤波技术的缺陷和利用智能融合技术提高滤波器性能的设计思想。

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Ambac has two preferred issues with the same ratings as its bonds: Ambac 5.95% of Feb. 28, 2103 (16, AKF) and Ambac 5.875% of Mar. 24, 2103 (16, AKT) .

FORBES: Magazine Article

Likewise, buying a health-insurance policy from a college generally isn't a qualified expense but a parent might have an argument if the college requires all students to have coverage as a condition of enrollment, says Andrea Feirstein, managing director at AKF Consulting Group, which advises states that administer 529s.

WSJ: What Counts as a Qualified 529-Plan Expense?