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2003
It is built from checkable properties of the record itself: whether the article has a DOI, how many independent sources confirmed its data, whether the required fields are filled in, and how recent the latest confirmation is. Disagreement between sources and a missing identifier lower it. A value of 80 or above means the record was published without further checking; 60 to 79 means it is published at reduced confidence, with a manual check advisable. A record verified by an editor by hand is never pushed below 90 by a recalculation. This scores our data about the article, not the article itself.
An application of the Jacobi equation to the dynamics of gravitating systems is considered. Generalized forms of the Jacobi equation for open stellar systems and for systems with physical collisions of stars are obtained. Some consequences of the derived equations are given.