Input Message List

Collect messages from the environment on the input message list. 

When the CS is ready to start processing messages, it freezes the contents of the input message list, then reads and assesses its contents. The messages are fed, one at a time, into the classifier list, which is a large collection of... 

Even for a small-scale problem, the classifier list may be long. This has the advantage that, since many classifiers may be able to generate output messages at one time, the system implicitly includes several different ways of responding to messages from the environment (in other words, it can incorporate several different hypotheses about how the environment behaves). This helps the CS to cope with uncertainty when there may be insufficient information on the input message list to determine precisely what state the environment is in. 

Coupled classifiers can perform complex calculations, such as handling temporal information. Recall that the input message list delivers a snapshot of current conditions in the reactor. If the reactor contains a pH probe, the message that the probe sends will define the latest pH of the reaction mixture. 

Receptors that monitor the environment and generate input messages these inform the CS about conditions in the environment. The input messages and post-it notes from the classifier itself are gathered on an input list. 

The classifier system, which analyzes the input messages, creates messages for output, and places them on an output list. 

The in every case is the generation of a message, so the processing of the input messages leads to zero or more output messages being created. These are placed on an output message list. 

Each input message is compared with each classifier in turn. Once any triggered classifiers have created their output, the output message list is complete. 

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. 

Multiple condition classifiers are satisfied only when all of the conditions are met by messages on the current input list. It is not necessary that the different conditions are satisfied by different messages, although they may be. Thus, the message 11001 will satisfy both conditions in the classifier no, l 01/action. 

One or more conditions in a classifier may be preceded by a character this is interpreted as negation of the condition, thus the condition is satisfied only if there is no matching message on the input list. Hence, the classifier ... 

The order in which output messages are generated and placed on the output list is of no consequence, so the system can process information in parallel without worrying about whether one classifier should inspect the input list before another gets the chance. The number of messages posted to the output list is, in Example 1, equal to the number of classifiers, but in general the input and the output lists need not be equal in length either to each other or to the classifier list. 

The first classifier is satisfied by the message oiooi and posts the message ooooi to the output list. If this is not a message to any effector, it will be transferred to the input list on the next major cycle and read by all the classifiers in that cycle. The message ooooi satisfies the second classifier, which would post the message oom in turn, this message activates the third classifier in the next cycle. 

A connector is implemented as the registration of the receiver s input with the sender s output. When a connection is to be made, the sender must be informed that the required output is to be sent to the required input of the required receiver. This explains what an output port is It represents an object s ability to accept registration requests and to maintain a list (a separate one for each of its output ports) of the interested parties. An input port represents an object s ability to accept the messages sent by the corresponding output ports. 

Next, the warning yellow message bar indicates that you need to specify the input temperature for this stream. In order to specify the temperature of the stream, select the Conditions option from this list to display the window in Figure 1-12. It is within this window that the user specifies the temperature of the stream. 

In LNT, gates are bidirectional. So we can present all AADL port directions in, out and in out. The correspondence between in/out ports is ensured with identifiers, every connection (from out to in port) has an identifier. Sender includes a list of connection identifiers in its output. has a list of accepted connection identifiers (parameter ConnectIDs) to verify if its is concerned by the received input. Thus, we can specify all AADL connection topologies. The Example presented in listings 1.3 and 1.4 transforms Producer/Consumer communication Producer provides inputs to two consumers Consumerl and Consumer2. This is an 1-to-n topology and event data type AADL port connection. In LNT, we get five processes. Process Producer sends messages. Each EventPort ConnPC identifies its concerned inputs with identifiers Producer D Consumer D. 

Rule 9. Bus becomes an LNT process , with two ports (input, output) modeling a queue with a capacity determined by a parameter. uses the push type where the communication is initiated by the sender. It allows the bound of any connection category data/event/event data connection and imme-diate/delayed connection. exchanges a message contained the following information sender identifier, list of connection identifiers, exchanged data and data sending interval time. 

Generate a list of 20 numbers between 1 and 100 using the Excel function RANDBETWEEN. Select these numbers and copy them (by value) to another column (the reason for this is that RANDBETWEEN updates the list each time an operation is performed in the spreadsheet). Write a VBA program to input the copied numbers and sort them into descending order using bubble sort. Output the sorted numbers to the spreadsheet. Be sure to give an error message if no numbers are entered. 

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