Disturbances in the form of oscillations are usually originated in process plants due to various faults such as sensor faults, valve faults, process faults and controller tuning faults. Many of these faults can be represented as nonlinearities. Faults in the form of nonlinearities may produce oscillations with a fundamental frequency and its harmonics. This study presents a novel method based o...

Root cause analysis for software systems is a challenging diagnostic task, due to the complexity emanating from the interactions between system components and the sheer size of logged data. This diagnostic task is usually assisted by human experts who create mental models of the system-at-hand, in order to generate hypotheses and conduct the analysis. In this paper, we propose a root cause anal...

In the design of chemical/energy production systems, a major challenge is to identify the bottleneck issues and improve its sustainability effectively. Due to the multi-dimensional feature of sustainability, how to account for the impacts of various design factors and the cause-and-effect relationships can be very difficult. This paper will present a sustainability root cause analysis method ba...

Root Cause Analysis of BGP Dynamics

The causes and contributory factors that result in pressure ulcer (PU) formation are typically identified by the use of a root cause analysis (RCA)1. RCA is founded on the high reliability theory (HRT) or the idea that health-care organisations can learn how to improve the quality and safety of care from other safety-critical industries and previous adverse events.2 HRT focuses on identifying t...

We present a new root cause analysis algorithm for discovering the most likely causes of differences found in testing results of two versions of the same software. Problematic points in test and environment attribute hierarchies are presented to a user in a compact way which in turn allows saving time on test result processing. We have proven that for clearly separated problem causes our algori...

Interdomain routes change over time, and it is impressive to observe up to which extent. Routes, even the most stable, can change many times in the same day and sometimes in the same hour or minute. Such variations can be caused by several types of events, e.g., the change of the routing policies of an ISP, the reboot of a router, or the fault of a link. Some events are physiological to the net...

There are two kinds of cause and effect. The scientific notion that is taught as part of the formal model is rigorous, but often limited in its generalizability across situations. The study of cause and effect in natural settings is also a rigorous field, with several useful and easily applied techniques. Root cause analysis is a set of approaches to identifying the factors in natural settings ...