About: Time-utility function

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A Time/Utility Function (TUF), née Time/Value Function, specifies the application-specific utility that an action (e.g., computational task, mechanical movement) yields depending on its completion time. TUFs and their utility interpretations (semantics), scales, and values are derived from application domain-specific subject matter knowledge. An example (but not the only) interpretation of utility is an action's relative importance, which otherwise is independent of its timeliness. The traditional deadline represented as a TUF is a special case—a downward step of utility from 1 to 0 at the deadline time—e.g., timeliness without importance. A TUF is more general—it has a critical time, with application-specific shapes and utility values on each side, after which it does not increase. The va

Attributes	Values
rdfs:label	Time-utility function (en)
rdfs:comment	A Time/Utility Function (TUF), née Time/Value Function, specifies the application-specific utility that an action (e.g., computational task, mechanical movement) yields depending on its completion time. TUFs and their utility interpretations (semantics), scales, and values are derived from application domain-specific subject matter knowledge. An example (but not the only) interpretation of utility is an action's relative importance, which otherwise is independent of its timeliness. The traditional deadline represented as a TUF is a special case—a downward step of utility from 1 to 0 at the deadline time—e.g., timeliness without importance. A TUF is more general—it has a critical time, with application-specific shapes and utility values on each side, after which it does not increase. The va (en)
foaf:depiction
dcterms:subject	Software performance management Optimal scheduling Quality of service Real-time computing
Wikipage page ID	15735043 (xsd:integer)
Wikipage revision ID	1122628394 (xsd:integer)
Link from a Wikipage to another Wikipage	Software performance management Constant function Concave function Optimal scheduling Dempster-Shafer Theory Real-time computing Quality of service Real-time computing Imprecise probability Scheduling Tardiness
Link from a Wikipage to an external page	http://www.schedulingconference.org/ https://www.ssrg.ece.vt.edu/allpapers.php https://www.real-time.org https://en.wiktionary.org/wiki/monotonic_decreasing%23:~:text=English-,Adjective,contrast%20this%20with%20strictly%20decreasing https://www.stern.nyu.edu/om/faculty/pinedo/schedtheory/book5/index.html https://www.academia.edu/15210217/Fifty_years_of_scheduling_a_survey_of_milestones%3Fauto=download&email_work_card=download-paper https://www.researchgate.net/project/The-Third-International-Workshop-on-Dynamic-Scheduling-Problems-IWDSP-2020 https://www.springer.com/journal/10951 https://www.springer.com/us/book/9783662593615%3Fgclid=Cj0KCQjwsuP5BRCoARIsAPtX_wHOG2nAkt8eTSFJbhNa4VXlQBt_xhirlmE-ECUV5cnq8nPqgH6gpJUaAuGaEALw_wcB
sameAs	Time-utility function Time-utility function Time-utility function
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thumbnail	wiki-commons:Special:FilePath/Example_TUFs.png?width=300
has abstract	A Time/Utility Function (TUF), née Time/Value Function, specifies the application-specific utility that an action (e.g., computational task, mechanical movement) yields depending on its completion time. TUFs and their utility interpretations (semantics), scales, and values are derived from application domain-specific subject matter knowledge. An example (but not the only) interpretation of utility is an action's relative importance, which otherwise is independent of its timeliness. The traditional deadline represented as a TUF is a special case—a downward step of utility from 1 to 0 at the deadline time—e.g., timeliness without importance. A TUF is more general—it has a critical time, with application-specific shapes and utility values on each side, after which it does not increase. The various researcher and practitioner definitions of firm and soft real-time can also be represented as special cases of the TUF model. The optimality criterion for scheduling multiple TUF-constrained actions has historically in the literature been only maximal utility accrual (UA)—e.g., a (perhaps expected) weighted sum of the individual actions' completion utilities. This thus takes into account timeliness with respect to critical times. Additional criteria (e.g., energy, predictability), constraints (e.g., dependencies), system models, scheduling algorithms, and assurances have been added as the TUF/UA paradigm and its use cases have evolved. More expressively, TUF/UA allows accrued utility, timeliness, predictability, and other scheduling criteria and constraints to be traded off against one another for the schedule to yield situational application QoS—as opposed to only timeliness per se. Instances of the TUF/UA paradigm have been employed in a wide variety of application domains, most frequently in military systems. (en)
prov:wasDerivedFrom	wikipedia-en:Time-utility_function?oldid=1122628394&ns=0
page length (characters) of wiki page	21724 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Time-utility_function
is Link from a Wikipage to another Wikipage of	Window of opportunity TUF Real-time computing Real-time operating system Scheduling (computing) Time-value function Time utility function
is Wikipage redirect of	Time-value function Time utility function
is Wikipage disambiguates of	TUF
is foaf:primaryTopic of	wikipedia-en:Time-utility_function

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