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Adaptive Intelligent Tiering for modern storage systems 现代存储系统的自适应智能分层
IF 2.2 4区 计算机科学
Performance Evaluation Pub Date : 2023-05-01 DOI: 10.1016/j.peva.2023.102332
Lu Pang , Anis Alazzawe , Madhurima Ray , Krishna Kant , Jeremy Swift
{"title":"Adaptive Intelligent Tiering for modern storage systems","authors":"Lu Pang ,&nbsp;Anis Alazzawe ,&nbsp;Madhurima Ray ,&nbsp;Krishna Kant ,&nbsp;Jeremy Swift","doi":"10.1016/j.peva.2023.102332","DOIUrl":"https://doi.org/10.1016/j.peva.2023.102332","url":null,"abstract":"<div><p><span>Enterprise systems routinely use tiered storage consisting of a hierarchy of storage devices that vary in speed and size. One key to obtaining good performance in such a hierarchy is to migrate data elements intelligently to the appropriate tier. For example, moving the most used data towards the fastest tier and the least used data towards the slowest tier. Tiering is typically done based on usage </span>statistics<span><span> over relatively long time periods. In this paper, we consider a much more agile tiering mechanism called Adaptive Intelligent Tiering (AIT). It can dynamically adapt to the changing behavior of storage accesses by the running applications. The AIT mechanism uses a deep learning model to generate a set of candidate movements and employs a </span>reinforcement learning mechanism to further refine the candidates. Based on extensive simulations in a 3-tier system, we show that the proposed scheme, compared with several other methods, enhances workload performance up to 85% on storage traces with a wide range of characteristics.</span></p></div>","PeriodicalId":19964,"journal":{"name":"Performance Evaluation","volume":"160 ","pages":"Article 102332"},"PeriodicalIF":2.2,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49901375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
French language abstracts 法语摘要
IF 2.2 4区 计算机科学
Performance Evaluation Pub Date : 2023-04-01 DOI: 10.1177/13563890231167708
{"title":"French language abstracts","authors":"","doi":"10.1177/13563890231167708","DOIUrl":"https://doi.org/10.1177/13563890231167708","url":null,"abstract":"dans les centres de santé pour améliorer la santé des membres de la communauté. Les analy-ses corrigées démontraient l’effet de l’intervention sur certains dispositifs des centres de santé. Cependant, cela ne se traduisait pas par une amélioration de l’état de santé de la communauté. Nous examinons les enjeux pratiques et épistémologiques de l’utilisation de l’analyse de médiation pour évaluer une intervention complexe. Ces conclusions serviront à des évaluations à venir","PeriodicalId":19964,"journal":{"name":"Performance Evaluation","volume":"1 1","pages":"250 - 252"},"PeriodicalIF":2.2,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83003686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DOME: A mixed-method evaluation of the impacts of complex programmes against educational poverty DOME:对消除教育贫困的复杂方案影响的混合方法评估
IF 2.2 4区 计算机科学
Performance Evaluation Pub Date : 2023-04-01 DOI: 10.1177/13563890231166979
G. Tomei
{"title":"DOME: A mixed-method evaluation of the impacts of complex programmes against educational poverty","authors":"G. Tomei","doi":"10.1177/13563890231166979","DOIUrl":"https://doi.org/10.1177/13563890231166979","url":null,"abstract":"Developmental Outcome Monitoring and Evaluation (DOME) is a mixed and participatory method for the impact assessment of complex and innovative programmes. It has been developed and is being applied in Italy for the evaluation of interventions to combat juvenile educational poverty. The methodological process focuses on the detection of strategic change (outcomes) implemented by key actors in complex programmes, implemented in diverse geographical areas and managed by public–private partnerships. DOME combines methodological approaches already in use in the field of monitoring and evaluation – theory of change, counterfactual analysis and developmental evaluation and trailing research – in new ways.","PeriodicalId":19964,"journal":{"name":"Performance Evaluation","volume":"27 1","pages":"190 - 207"},"PeriodicalIF":2.2,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81065902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Understanding the theoretical underpinnings of preventative early parenting interventions: A theory-based evaluation 理解预防性早期育儿干预的理论基础:基于理论的评估
IF 2.2 4区 计算机科学
Performance Evaluation Pub Date : 2023-04-01 DOI: 10.1177/13563890231165814
Gráinne Hickey, S. McGilloway, Yvonne Leckey, T. Bywater, M. Donnelly
{"title":"Understanding the theoretical underpinnings of preventative early parenting interventions: A theory-based evaluation","authors":"Gráinne Hickey, S. McGilloway, Yvonne Leckey, T. Bywater, M. Donnelly","doi":"10.1177/13563890231165814","DOIUrl":"https://doi.org/10.1177/13563890231165814","url":null,"abstract":"Early parenting programmes which promote nurturing care for children aged 0–3 years are popular in community-based primary health care settings. However, little research has explored the causal and theoretical assumptions underpinning these programmes. This paper outlines a programme theory evaluation which was conducted to explore the change principles inherent in a complex early parenting intervention, the parent and infant programme, which aims to support parents and infants aged 0–2 years. A documentary analysis and qualitative interviews (n = 19) with key stakeholders were undertaken to describe programme components, outline intervention objectives and identify the mechanisms assumed to be important to programme success. The interpretation of the findings was informed by the Consolidated Framework for Implementation Research, within which we explore and describe the theoretical perspectives that underpin the programme and guide its operationalisation and delivery. The importance of attending to the causal mechanisms underlying early parenting interventions is outlined.","PeriodicalId":19964,"journal":{"name":"Performance Evaluation","volume":"32 1","pages":"208 - 227"},"PeriodicalIF":2.2,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84031060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Strengthening evaluation capacity in Government: Why institutionalisation matters and why it is not sufficient 加强政府的评价能力:为什么制度化很重要，为什么制度化还不够
IF 2.2 4区 计算机科学
Performance Evaluation Pub Date : 2023-04-01 DOI: 10.1177/13563890231166981
D. Lamarque
{"title":"Strengthening evaluation capacity in Government: Why institutionalisation matters and why it is not sufficient","authors":"D. Lamarque","doi":"10.1177/13563890231166981","DOIUrl":"https://doi.org/10.1177/13563890231166981","url":null,"abstract":"If we are interested in promoting and strengthening evaluation in a country, we know that the extent to which evaluation is institutionalised is key. Investigating the strengths and weaknesses of institutional factors and identifying their limits help us understand under which conditions these factors will make a difference – and what is still needed. I will be drawing on several studies and reports – as well as my own experience – that address the issue of how evaluation is institutionalised internationally. While all these sources confirm the positive influence of institutional arrangements, they also show that evaluation develops unevenly and slowly and these developments are often difficult to specify or measure.","PeriodicalId":19964,"journal":{"name":"Performance Evaluation","volume":"19 1","pages":"161 - 167"},"PeriodicalIF":2.2,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84542916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Can we use deliberation to change evaluation systems? How an advisory group contributed to policy change 我们可以通过审议来改变评估系统吗?咨询小组如何促进政策变化
IF 2.2 4区 计算机科学
Performance Evaluation Pub Date : 2023-03-06 DOI: 10.1177/13563890231156955
Peter Dahler-Larsen
{"title":"Can we use deliberation to change evaluation systems? How an advisory group contributed to policy change","authors":"Peter Dahler-Larsen","doi":"10.1177/13563890231156955","DOIUrl":"https://doi.org/10.1177/13563890231156955","url":null,"abstract":"One of the most dominant trends in the field of evaluation in recent years is the institutionalization of evaluation under headlines such as “evaluation culture,” “evaluation policy,” and “evaluation systems.” There has been less interest in how evaluation systems can be changed, modified, or improved, not to mention deinstitutionalized, if necessary. Can a variety of stakeholders deliberate about the consequences of an evaluation system, and can it lead to policy change? A case study of a ministerial advisory group on national tests in Denmark shows how specific challenges were dealt with, such as the design of the deliberative process, the potential dominance of experts, and the distinction between technical-evaluative and practical-political arguments, and how these maneuvers paved the way for policy change. Based on the case study, the article discusses the prospects for democratic deliberation about evaluation systems.","PeriodicalId":19964,"journal":{"name":"Performance Evaluation","volume":"17 1","pages":"144 - 160"},"PeriodicalIF":2.2,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73010667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The use of mediation analysis in evaluation of complex health interventions 在评价复杂卫生干预措施中使用中介分析
IF 2.2 4区 计算机科学
Performance Evaluation Pub Date : 2023-02-07 DOI: 10.1177/13563890221149452
Deborah D. DiLiberto, C. Opondo, S. Staedke, Clare I. R. Chandler, E. Allen
{"title":"The use of mediation analysis in evaluation of complex health interventions","authors":"Deborah D. DiLiberto, C. Opondo, S. Staedke, Clare I. R. Chandler, E. Allen","doi":"10.1177/13563890221149452","DOIUrl":"https://doi.org/10.1177/13563890221149452","url":null,"abstract":"This article presents an application of the causal inference approach to mediation analysis using the example of a complex intervention that aimed to improve the quality of care at health centres in Uganda. Mediation analysis is a statistical method that aims to isolate the causal mechanisms that make an intervention work in a given context. We combined data from a cluster randomized control trial and a mixed-methods process evaluation. We developed two causal models following our hypotheses of how the intervention was intended to work through mechanisms at health centres to improve health outcomes in the community. In adjusted analyses, there was evidence of an effect of the intervention on some health centre mechanisms; however, these did not lead to improvements in community health outcomes. We discuss the practical and epistemological challenges encountered when using mediation analysis to evaluate a complex intervention. These findings will inform future evaluations. Trial registration: The trial reported in this article is registered at: clinicaltrials.gov, NCT01024426. Registered 2 December 2009, https://clinicaltrials.gov/ct2/show/record/NCT01024426?term=NCT01024426&draw=2&rank=1","PeriodicalId":19964,"journal":{"name":"Performance Evaluation","volume":"3 1","pages":"168 - 189"},"PeriodicalIF":2.2,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75357772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Editorial Message from the New Editor-in-Chief 新主编的社论
IF 2.2 4区 计算机科学
Performance Evaluation Pub Date : 2023-01-01 DOI: 10.1016/S0166-5316(23)00007-X
{"title":"Editorial Message from the New Editor-in-Chief","authors":"","doi":"10.1016/S0166-5316(23)00007-X","DOIUrl":"https://doi.org/10.1016/S0166-5316(23)00007-X","url":null,"abstract":"","PeriodicalId":19964,"journal":{"name":"Performance Evaluation","volume":"159 ","pages":"Article 102337"},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49867195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
French language abstracts 法语摘要
IF 2.2 4区 计算机科学
Performance Evaluation Pub Date : 2023-01-01 DOI: 10.1177/13563890221142105
{"title":"French language abstracts","authors":"","doi":"10.1177/13563890221142105","DOIUrl":"https://doi.org/10.1177/13563890221142105","url":null,"abstract":"","PeriodicalId":19964,"journal":{"name":"Performance Evaluation","volume":"98 13 1","pages":"133 - 136"},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87710480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A learning-based scheme for channel allocation to vehicular users in wireless networks 一种基于学习的无线网络车载用户信道分配方案
IF 2.2 4区 计算机科学
Performance Evaluation Pub Date : 2023-01-01 DOI: 10.1016/j.peva.2023.102331
Thi Thuy Nga Nguyen , Olivier Brun , Balakrishna J. Prabhu
{"title":"A learning-based scheme for channel allocation to vehicular users in wireless networks","authors":"Thi Thuy Nga Nguyen ,&nbsp;Olivier Brun ,&nbsp;Balakrishna J. Prabhu","doi":"10.1016/j.peva.2023.102331","DOIUrl":"https://doi.org/10.1016/j.peva.2023.102331","url":null,"abstract":"<div><p>Resource allocation algorithms in wireless networks can require solving complex optimization problems at every decision epoch. For large scale networks, when decisions need to be taken on time scales of milliseconds, using standard convex optimization solvers for computing the optimum can be a time-consuming affair that may impair real-time decision making. In this paper, we propose to use Data-driven and Deep Feedforward Neural Networks (DFNN) for learning the relation between the inputs and the outputs of two such resource allocation algorithms that were proposed in Nguyen et al. (2019, 2020). On numerical examples with realistic mobility patterns, we show that the learning algorithm yields an approximate yet satisfactory solution with much less computation time.</p></div>","PeriodicalId":19964,"journal":{"name":"Performance Evaluation","volume":"159 ","pages":"Article 102331"},"PeriodicalIF":2.2,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49901372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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