Self-Star Properties

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[[Image:SelfStarProperties.png|thumb|400px|The basic Self-* Properties and the four sections of Autonomic Computing]]
[[Image:SelfStarProperties.png|thumb|400px|The basic Self-* Properties and the four sections of Autonomic Computing]]
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'''Self-Configuration''' is the automated configuration of components and systems. Autonomic systems will configure themselves automatically in accordance with high-level policies that specify what is desired, not how it is to be accomplished. '''[[Self-Optimization]]''' means systems, sub-systems and components continually seek opportunities to improve their own performance and efficiency. It requires the autonomous ability of identifying and seizing opportunities to make the system more efficient in performance or cost. '''Self-Healing''' or '''Self-Repairing''' is the ability of a system to automatically detect, diagnose, and repair localized software and hardware problems.  
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'''Self-Configuration''' is the automated configuration of components and systems. Autonomic systems will configure themselves automatically in accordance with high-level policies that specify what is desired, not how it is to be accomplished. '''[[Self-Optimization]]''' means systems, sub-systems and components continually seek opportunities to improve their own performance and efficiency. It requires the autonomous ability of identifying and seizing opportunities to make the system more efficient in performance or cost. '''[[Self-Cleaning]]''', '''[[Self-Healing]]''' or '''[[Self-Repairing]]''' is the ability of a system to automatically detect, diagnose, and repair localized software and hardware problems. Self-Healing requires monitoring, detection and diagnosis of faults and errors: an old Latin proverb says "Bene diagnoscitur, bene curatur" (Something that is well diagnosed can be cured well).  
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Self-Healing requires monitoring, detection and diagnosis of faults and errors: an old Latin proverb
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says "Bene diagnoscitur, bene curatur" (Something that is well diagnosed can be cured well).
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'''Self-Stabilization''' refers to a system's ability to recover automatically from unexpected faults. '''Self-Protection''' is finally a property of systems which automatically defend themselves against malicious attacks or cascading failures. It uses early warning to anticipate and prevent systemwide failures. Other useful self-properties are related to analysis and diagnosis: '''Self-Describing''' and '''Self-Explaining''' systems are useful if we want to understand distributed systems which are getting more and more complex. They are also necessary for intelligent autonomous systems with the abilities of self-healing. Less intelligent systems must rely on restart of affected components, which is the foundation of the [[Recovery-Oriented Computing]] (ROC). All these properties are desirable, because the deploying, operating and maintaining of complex systems can be very costly, difficult and expensive. Modern [[Distributed System|distributed systems]] are inherently complex.  
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'''Self-Stabilization''' refers to a system's ability to recover automatically from unexpected faults. '''[[Self-Protection]]''' is finally a property of systems which automatically defend themselves against malicious attacks or cascading failures. It uses early warning to anticipate and prevent systemwide failures. Other useful self-properties are related to analysis and diagnosis: '''Self-Describing''' and '''Self-Explaining''' systems are useful if we want to understand distributed systems which are getting more and more complex. They are also necessary for intelligent autonomous systems with the abilities of self-healing. Less intelligent systems must rely on restart of affected components, which is the foundation of the [[Recovery-Oriented Computing]] (ROC). All these properties are desirable, because the deploying, operating and maintaining of complex systems can be very costly, difficult and expensive. Modern [[Distributed System|distributed systems]] are inherently complex.
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'''Self-Design''' can be found in (unsupervised) [[Learning|learning]] and [[Adaptation|adaptation]].
As the prefix self-* suggests, such self-* properties occur indeed often in self-organizing systems.  
As the prefix self-* suggests, such self-* properties occur indeed often in self-organizing systems.  
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The usually involve some form of '''Self-Reference'''. Yet the existing self-* properties of living systems are not exactly identical with the desirable self-* properties of artificial systems. Living systems are characterized by the following self-* properties or self-organizing processes. What all living systems have in common is [[Autopoiesis]] and [[Self-Organization]]. '''Self-Regeneration''' and '''Self-Reproduction''' can be found even in plants through metabolism and sex (in Greek, 'metabolos' means something fluctuating or changing, that is always changing or in perpetual change)
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The usually involve some form of '''Self-Reference'''. Yet the existing self-* properties of living systems are not exactly identical with the desirable self-* properties of artificial systems. Living systems are characterized by the following self-* properties or self-organizing processes. What all living systems have in common is [[Autopoiesis]] and [[Self-Organization]]. '''[[Self-Regeneration]]''' and '''Self-Reproduction''' can be found even in plants through metabolism and sex (in Greek, 'metabolos' means something fluctuating or changing, that is always changing or in perpetual change)
, '''Self-Movement''', '''Self-Control''' and '''Self-Defense''' in animals due to digestion, cognition, and the immune system, and finally '''Self-Awareness''' and '''Self-Consciousness''' in humans. In other words the application of the principles found in natural systems to artificial and distributed systems is, unfortunately, not an easy, straightforward process. We cannot simply obtain amazing self-* properties in artificial systems just by imitating nature. A self-reproductive application is known as a dangerous virus, a self-defending system can be a nightmare, and a self-regenerative application can perhaps prevent a deactivation.  
, '''Self-Movement''', '''Self-Control''' and '''Self-Defense''' in animals due to digestion, cognition, and the immune system, and finally '''Self-Awareness''' and '''Self-Consciousness''' in humans. In other words the application of the principles found in natural systems to artificial and distributed systems is, unfortunately, not an easy, straightforward process. We cannot simply obtain amazing self-* properties in artificial systems just by imitating nature. A self-reproductive application is known as a dangerous virus, a self-defending system can be a nightmare, and a self-regenerative application can perhaps prevent a deactivation.  
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=== Protection, Pain and Allergies ===
=== Protection, Pain and Allergies ===
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Pain is an unpleasant sensation resulting from the intricate interplay between
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[[Self-Protection|Self-protection]] can have very severe consequences
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sensory and cognitive mechanisms. It is associated with actual or
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and side-effects if the integrity of the self is affected: if the self
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potential tissue damage in natural organisms. Although it is unpleasant,
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is not recognized correctly, allergies and autoimmune diseases occur.
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it is a necessary mechanism of systems with the capability of effective selfprotection.
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The system attacks itself if the self cannot be distinguished
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Effective self-protection means fast self-protection. The rapid
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correctly from the non-self.
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warning through pain is a critical component of the body’s defense system.
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Pain is also a consequence of self-protection, it seems to be  
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Pain is an unpleasant sensation resulting from the intricate interplay between
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a general, necessary mechanism of systems with the capability
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sensory and cognitive mechanisms. A painful stimulus leads to a massive
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of self-protection, because it signals the place where the  
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activation of multiple units, and prevents at the same time any actions
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self-protecting mechanisms fail or where they are badly needed.
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associated with it. It is characterized by a loss in the flow of information, or
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in the members of the system.
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* A trainer of a sports team feels pain if his players are banned from the field, and he cannot send in new players.
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* A general feel pain if his army loses in a continued campaign lots of soldiers, and he cannot replace them with new ones.
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* A bishop feel pain if his church loses lots of members, while the number of new members is sinking, too. A chief of a political party will do the same
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Pain seems to be a general, necessary mechanism of systems with the
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capability of self-protection, because it signals the place where the selfprotecting
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mechanisms fail.
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Another negative side-effect of self-protection are autoimmune diseases
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and allergies. In autoimmune diseases the body attacks the ‘self’ and its
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own cells, examples are Diabetes Mellitus (type 1) or Multiple Sclerosis. In
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allergies, the body attacks harmless targets which are normal parts of the
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body: allergens such as dust, pollen, or certain foods. In both cases, the body
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attacks parts of itself which are harmless. The distinction between self/nonself
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and harmless/harmful goes wrong. In autoimmune diseases, parts of the
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self are mistaken for hostile agents, and in allergies, harmless targets are
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mistaken for harmful intruders.
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Most autoimmune diseases are probably the result of multiple circumstances,
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for example, a genetic predisposition triggered by an infection. Autoimmune
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diseases result from at least three different interacting components:
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genetic, environmental and regulatory. A unifying concept for the explanation
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of an autoimmune disease needs “to incorporate genetic predisposition,
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environmental factors and immune dysregulation”, as Ermann and Fathman
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argue.
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=== Rejuvenation and Cancer ===
=== Rejuvenation and Cancer ===
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* self-optimizing -> slow-down, halt, stop
* self-optimizing -> slow-down, halt, stop
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Any strong self-* property could also lead to rejection or overwriting of
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Any automatic or strong self-* property without a conscious controller
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manual changes, or to the inability to deactive the system - to the loss of
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in the loop has the advantage that it can react fast and immediately.
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But it could also lead to rejection or overwriting of manual changes,  
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or to the inability to deactivate the self-* mechanism - to the loss of
control. The fear that we will lose control of our software, if it is modified to
control. The fear that we will lose control of our software, if it is modified to
be more like living systems is justified.
be more like living systems is justified.

Latest revision as of 07:59, 3 January 2009

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