Topic
Service level
About: Service level is a research topic. Over the lifetime, 7647 publications have been published within this topic receiving 126093 citations. The topic is also known as: service level.
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TL;DR: This stochastic optimization problem of a supply chain consisting of n production facilities in tandem and producing a single product class is solved by combining analytical (large deviations) and sample path-based (perturbation analysis) techniques.
Abstract: We consider a model of a supply chain consisting of n production facilities in tandem and producing a single product class. External demand is met from the finished goods inventory maintained in front of the most downstream facility (stage 1); unsatisfied demand is backlogged. We adopt a base-stock production policy at each stage of the supply chain, according to which the facility at stage i produces if inventory falls below a certain level w
i
and idles otherwise. We seek to optimize the hedging vector w=(w
1,...,w
n
) to minimize expected inventory costs at all stages subject to maintaining the stockout probability at stage 1 below a prescribed level (service level constraint). We make rather general modeling assumptions on demand and production processes that include autocorrelated stochastic processes. We solve this stochastic optimization problem by combining analytical (large deviations) and sample path-based (perturbation analysis) techniques. We demonstrate that there is a natural synergy between these two approaches.
45 citations
TL;DR: In this article, the authors investigated the relationship between the quality of service, safety stock and inventory inaccuracy under demand variations and found that the service-level quality is a non-monotone function of the inaccuracy rate, i.e., the quality increases up to an IRI level and subsequently decreases.
45 citations
TL;DR: The results show that the safety stock coordination is profitable; the proposed model is capable of coordinating supply chain and can share extra benefits between SC members fairly.
45 citations
TL;DR: In this paper, the authors proposed an ordering decision-aid technique which uses a measurement of spare performance, based on the stress-strength interference theory; which have called Condition-Based Service Level (CBSL).
45 citations
01 Jan 2010
TL;DR: This new model is based on Public Key Infrastructure (PKI) and reputation-based trust systems and helps preventing SLA violations by identifying violation-prone services at service selection stage and actively contributes in breach management at the time of penalty enforcement.
Abstract: For business workflow automation in a service-enriched environment such as a grid or a cloud, services scattered across heterogeneous Virtual Organizations (VOs) can be aggregated in a producer-consumer manner, building hierarchical structures of added value. In order to preserve the supply chain, the Service Level Agreements (SLAs) corresponding to the underlying choreography of services should also be incrementally aggregated. This cross-VO hierarchical SLA aggregation requires validation, for which a distributed trust system becomes a prerequisite. Elaborating our previous work on rule-based SLA validation, we propose a hybrid distributed trust model. This new model is based on Public Key Infrastructure (PKI) and reputation-based trust systems. It helps preventing SLA violations by identifying violation-prone services at service selection stage and actively contributes in breach management at the time of penalty enforcement.
45 citations