By Art Carpenter
Paintings wood worker completely updates his winning first variation with an intensive number of new examples and methods. Addressing the composition and operation of the SAS macro facility and the SAS macro language, Carpenter's whole consultant to the SAS Macro Language, moment version, is full of ready-to-use macros, macro capabilities, and macro instruments that may allow you to without difficulty convert SAS code to macros, outline macro variables, and extra! New themes comprise writing consumer interfaces with %WINDOW, utilizing SYSPARM and SYSPBUFF, utilizing name EXECUTE, deleting macro variables utilizing %SYMDEL, utilizing macro recursion, and growing your individual macro features. additionally integrated are new SAS(r) nine gains equivalent to statements that come with %ABORT and %RETURN, approach strategies for the macro language, macro capabilities, autocall library macros, and code restoration concepts for compiled saved macro libraries. Many themes from the 1st version were increased. no matter if you are a new consumer with a simple realizing of Base SAS or an skilled programmer wanting a sophisticated reference guide, this is often the macro publication you have been looking for!
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Additional resources for Carpenter's Complete Guide to the SAS Macro Language, 2nd Edition
Others have described such an omission of detail as an "abstraction," b u t we specifically require an abstraction level to involve different predicates with different grain sizes. Planning systems not in the classic tradition also have planning levels. Rosenschein's planning algorithm, using dynamic logic , a t t e m p t s to satisfy a set of planning constraints. 1 Action: P2 Effects: Q Goal Goals: Ρ A Generic Plan from a Hierarchical Planner. on each constraint in the set (which he claims is a straightforward extension of his system) would constitute a planning level.
This module (described in Chapter 11) accepts descriptions of arbitrary unexpected occurrences. It then determines how these occurrences affect the plan being executed, possibly modifying the plan by removing certain subplans and inserting certain goals. W h e n the resulting plan contains unsolved goals, the execution monitor again calls the search algorithm to expand this plan. B o t h the plan critics and the execution monitor use the replanning actions to alter existing plans. T h e execution monitor makes use of the plan rationale t h a t S I P E has encoded in the plan.
Of these three subtrees, the first and last were transformed into the lowest abstraction level at planning level 2 (intervening Nextto goals have been disregarded for the sake of simplicity). T h e middle subtree, however, is still at the room abstraction level on planning level 3, as it required several operator applications to find a p a t h through the rooms to accomplish its goal. This hierarchical promiscuity leads to trouble. 3 Solutions 51 unless they explicitly specify otherwise. But this is not correct, as At may be affected after the middle subtree is expanded to the lowest abstraction level.