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Knowledge of results is a term in the psychology of learning. [ 1 ] [ 2 ] : 619 A psychology dictionary defines it as feedback of information: "(a) to a subject about the correctness of [their] responses; (b) a student about success or failure in mastering material, or (c) a client in psychotherapy about progress".
It can be used to confirm that the message was received and to mitigate the influence of noise. For example, the message may get distorted on the way or the receiver may misinterpret it. In such cases, the feedback loop makes it possible to assess whether such errors occurred and, if so, repeat the message to ensure that it is understood correctly.
Electronic feedback loops are used to control the output of electronic devices, such as amplifiers. A feedback loop is created when all or some portion of the output is fed back to the input. A device is said to be operating open loop if no output feedback is being employed and closed loop if feedback is being used. [45]
[22] A common objection emphasizes its lack of a feedback loop. [1] [23] [12] Feedback means that the receiver responds by sending their own message back to the original sender. This makes the process more complicated since each participant acts both as sender and receiver. For many forms of communication, feedback is of vital importance, for ...
The loop is: reinforcing if, after going around the loop, one ends up with the same result as the initial assumption. balancing if the result contradicts the initial assumption. Or to put it in other words: reinforcing loops have an even number of negative links (zero also is even, see example below) balancing loops have an odd number of ...
There are three types of control systems: open loop, feed-forward, and feedback. An example of a pure open loop control system is manual non-power-assisted steering of a motor car; the steering system does not have access to an auxiliary power source and does not respond to varying resistance to turning of the direction wheels; the driver must ...
Audio feedback (also known as acoustic feedback, simply as feedback, or the Larsen effect) is a special kind of positive feedback which occurs when a sound loop exists between an audio input (for example, a microphone or guitar pickup) and an audio output (for example, a loudly-amplified loudspeaker).
Knowledge-based recommender systems are often conversational, i.e., user requirements and preferences are elicited within the scope of a feedback loop.A major reason for the conversational nature of knowledge-based recommender systems is the complexity of the item domain where it is often impossible to articulate all user preferences at once.