Diagnosing problems, deploying new services, testing protocol interactions, or validating network configurations are hard problems in today’s Internet. This paper proposes to leverage the concept of Network Virtualization to overcome such problems: (1) Monitoring VNets can be created on demand along side any production network to enable network-wide monitoring in a robust and cost-efficient man...

Arkady Kanevsky is a senior research engineer at NetApp Advanced Technology Group. Arkady has done extensive research on RDMA technology, storage resiliency, scalable storage systems, and parallel and distributed computing. He received a Ph.D. in computer science from the University of Illinois in 1987. He was a faculty member at Dartmouth College and Texas A&M University prior to joining the i...

This study investigated the kinds of knowledge necessary to learn an important troubleshooting strategy, elimination. A total of 50 college-level students searched for the source of failures in simple digital networks. Production system modelling suggested that students using a common but simpler backtracking strategy would learn the more advanced elimination strategy if they applied certain do...

Process engineers can be faced with the task of understanding and optimizing the performance of an existing liquid-liquid extraction (extraction) column. Often times, an extraction column has been operating many years, and the performance is not well understood by the personnel responsible for its operation. Since this technology is not treated comprehensively during most under-graduate Chemica...

We study the problem of sequencing tests for the discovery of a faulty component, e.g., in a telecommunications network, where there is a random cost associated with testing a component. A novel feature in our approach is that a risk-sensitive performance criterion is used in order to rank diierent competing schedules.

FIS, short for Fault Isolation System. is an ongoing research project at the Navy Center for Applied Research in Artificial Intelligence, a branch of the U.S. Naval Research Laboratory. The focus of the work is a model-based expert system shell capable of acquiring from a user a description of a piece of electronic equipment. called a unit under test (UUT). This description is later used by FIS...

Pseudotype viruses are rapidly establishing themselves as important research and diagnostic tools of basic and clinical scientists facilitating the detailed study of individual viral genes, host cell receptors and highly pathogenic viruses, circumventing the need for high-level biosafety containment. The switching of surface envelope proteins expressed on the surface of these pseudotypes enable...

Troubleshooting is the task of fixing an abnormally behaving system. Many troubleshooting algorithms employ a diagnosis engine that returns a set of diagnoses Ω and their likelihoods (p(·)), where a diagnosis ω ∈ Ω is a set of components that may have been faulty and its likelihood p(ω) is the probability that ω is all the faulty components in the system. The Batch Repair Problem (BRP) is a rec...