Matches in SemOpenAlex for { <https://semopenalex.org/work/W4298014788> ?p ?o ?g. }
Showing items 1 to 84 of
84
with 100 items per page.
- W4298014788 abstract "We consider textsc{Persistence}, a new online problem concerning optimizing weighted observations in a stream of data when the observer has limited buffer capacity. A stream of weighted items arrive one at a time at the entrance of a buffer with two holding locations. A processor (or observer) can process (observe) an item at the buffer location it chooses, deriving this way the weight of the observed item as profit. The main constraint is that the processor can only move {em synchronously} with the item stream; as a result, moving from the end of the buffer to the entrance, it crosses paths with the item already there, and will never have the chance to process or even identify it. textsc{Persistence} is the online problem of scheduling the processor movements through the buffer so that its total derived value is maximized under this constraint. We study the performance of the straight-forward heuristic {em Threshold}, i.e., forcing the processor to follow an item through the whole buffer only if its value is above a threshold. We analyze both the optimal offline and Threshold algorithms in case the input stream is a random permutation, or its items are iid valued. We show that in both cases the competitive ratio achieved by the Threshold algorithm is at least $2/3$ when the only statistical knowledge of the items is the median of all possible values. We generalize our results by showing that Threshold, equipped with some minimal statistical advice about the input, achieves competitive ratios in the whole spectrum between $2/3$ and $1$, following the variation of a newly defined density-like measure of the input. This result is a significant improvement over the case of arbitrary input streams, since in this case we show that no online algorithm can achieve a competitive ratio better than $1/2$." @default.
- W4298014788 created "2022-10-01" @default.
- W4298014788 creator A5003125546 @default.
- W4298014788 creator A5051576344 @default.
- W4298014788 creator A5058262792 @default.
- W4298014788 creator A5059326608 @default.
- W4298014788 date "2016-04-11" @default.
- W4298014788 modified "2023-09-23" @default.
- W4298014788 title "Know When to Persist: Deriving Value from a Stream Buffer" @default.
- W4298014788 doi "https://doi.org/10.48550/arxiv.1604.03009" @default.
- W4298014788 hasPublicationYear "2016" @default.
- W4298014788 type Work @default.
- W4298014788 citedByCount "0" @default.
- W4298014788 crossrefType "posted-content" @default.
- W4298014788 hasAuthorship W4298014788A5003125546 @default.
- W4298014788 hasAuthorship W4298014788A5051576344 @default.
- W4298014788 hasAuthorship W4298014788A5058262792 @default.
- W4298014788 hasAuthorship W4298014788A5059326608 @default.
- W4298014788 hasBestOaLocation W42980147881 @default.
- W4298014788 hasConcept C102408133 @default.
- W4298014788 hasConcept C111919701 @default.
- W4298014788 hasConcept C11413529 @default.
- W4298014788 hasConcept C114614502 @default.
- W4298014788 hasConcept C119857082 @default.
- W4298014788 hasConcept C121332964 @default.
- W4298014788 hasConcept C126255220 @default.
- W4298014788 hasConcept C134306372 @default.
- W4298014788 hasConcept C145018004 @default.
- W4298014788 hasConcept C154945302 @default.
- W4298014788 hasConcept C173801870 @default.
- W4298014788 hasConcept C196921405 @default.
- W4298014788 hasConcept C200985842 @default.
- W4298014788 hasConcept C206729178 @default.
- W4298014788 hasConcept C21308566 @default.
- W4298014788 hasConcept C24890656 @default.
- W4298014788 hasConcept C2776291640 @default.
- W4298014788 hasConcept C2777210771 @default.
- W4298014788 hasConcept C33923547 @default.
- W4298014788 hasConcept C41008148 @default.
- W4298014788 hasConcept C76155785 @default.
- W4298014788 hasConcept C77553402 @default.
- W4298014788 hasConcept C94375191 @default.
- W4298014788 hasConcept C98045186 @default.
- W4298014788 hasConceptScore W4298014788C102408133 @default.
- W4298014788 hasConceptScore W4298014788C111919701 @default.
- W4298014788 hasConceptScore W4298014788C11413529 @default.
- W4298014788 hasConceptScore W4298014788C114614502 @default.
- W4298014788 hasConceptScore W4298014788C119857082 @default.
- W4298014788 hasConceptScore W4298014788C121332964 @default.
- W4298014788 hasConceptScore W4298014788C126255220 @default.
- W4298014788 hasConceptScore W4298014788C134306372 @default.
- W4298014788 hasConceptScore W4298014788C145018004 @default.
- W4298014788 hasConceptScore W4298014788C154945302 @default.
- W4298014788 hasConceptScore W4298014788C173801870 @default.
- W4298014788 hasConceptScore W4298014788C196921405 @default.
- W4298014788 hasConceptScore W4298014788C200985842 @default.
- W4298014788 hasConceptScore W4298014788C206729178 @default.
- W4298014788 hasConceptScore W4298014788C21308566 @default.
- W4298014788 hasConceptScore W4298014788C24890656 @default.
- W4298014788 hasConceptScore W4298014788C2776291640 @default.
- W4298014788 hasConceptScore W4298014788C2777210771 @default.
- W4298014788 hasConceptScore W4298014788C33923547 @default.
- W4298014788 hasConceptScore W4298014788C41008148 @default.
- W4298014788 hasConceptScore W4298014788C76155785 @default.
- W4298014788 hasConceptScore W4298014788C77553402 @default.
- W4298014788 hasConceptScore W4298014788C94375191 @default.
- W4298014788 hasConceptScore W4298014788C98045186 @default.
- W4298014788 hasLocation W42980147881 @default.
- W4298014788 hasLocation W42980147882 @default.
- W4298014788 hasOpenAccess W4298014788 @default.
- W4298014788 hasPrimaryLocation W42980147881 @default.
- W4298014788 hasRelatedWork W2093065103 @default.
- W4298014788 hasRelatedWork W2564742953 @default.
- W4298014788 hasRelatedWork W3032665695 @default.
- W4298014788 hasRelatedWork W3037088849 @default.
- W4298014788 hasRelatedWork W3170311813 @default.
- W4298014788 hasRelatedWork W4246721080 @default.
- W4298014788 hasRelatedWork W4287122694 @default.
- W4298014788 hasRelatedWork W4287773903 @default.
- W4298014788 hasRelatedWork W4378807424 @default.
- W4298014788 hasRelatedWork W2583815644 @default.
- W4298014788 isParatext "false" @default.
- W4298014788 isRetracted "false" @default.
- W4298014788 workType "article" @default.