Gather the Input

The first step in running a classifier is to gather messages on the input list. Probes and sensors in the environment do not synchronize their dispatch of messages, but just send them whenever they feel the urge thus messages from the environment begin to pile up in the input list until the CS is prepared to deal with them. 

The set of rules that comprise a CS is sometimes referred to as a production system, as they have the form of production rules. 

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