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Title
Japanese: 
English:An Actor-Based Metalevel Architecture for Group-Wide Reflection 
Author
Japanese: 渡部 卓雄, 米澤明憲.  
English: Takuo Watanabe, Akinori Yonezawa.  
Language English 
Journal/Book name
Japanese: 
English:Foundations of Object-Oriented Languages (Lecture Notes in Computer Science) 
Volume, Number, Page Vol. 489        pp. 405-425
Published date Feb. 1, 1991 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English:REX School/Workshop on Foundations of Object-Oriented Languages 
Conference site
Japanese: 
English:Noordwijkerhout 
DOI https://doi.org/10.1007/BFb0019450
Abstract The notion of group-wide reflection is presented. Group-wide reflection, a dimension of computational reflection in concurrent systems, allows each computational agent (actor/object/process) to reason about and act upon not only the agent itself, but also a group of agents which may contain the agent itself. Global properties of the group can be dynamically controlled through group-wide reflection. We have developed a simple yet general model for group-wide reflection based on the Actor model[1]. An operational semantics of a group of object-level actors is represented by another group of actors (a group of metalevel actors), which is an implementation of a transition system of the object-level group. We prove that the metalevel group correctly represents the operational semantics of the group in terms of transitions of configurations. Furthermore, migration of an actor from node to node is described as an example of group-wide reflection.

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