Abstract: Outer packet set（outer P-set） has dynamic characteristics, based on which some concepts are presented such as F-data, F-data family, nested F-data, and F-expansion coefficient etc. Theorems about them are proved. Especially, identification theorem of F-data in the same F-data family is obtained. The applications of F-data family in deformity data’s repair-recovery are given.

Key words: outer P-set, F-data, F-data family, nested F-data, repair-recovery of deformity data

摘要： 外P-集合具有动态特性，在此基础上给出F-数据、F-数据簇、F-扩充系数等概念，得到F-数据定理，F-数据簇定理，F-数据套定理与F-数据可辨识定理，给出F-数据簇在缺损数据修复-还原中的应用。

关键词: 外P-集合, F-数据, F-数据簇, F-数据套, 缺损数据修复-还原