Journal
KNOWLEDGE AND INFORMATION SYSTEMS
Volume 18, Issue 1, Pages 109-132Publisher
SPRINGER LONDON LTD
DOI: 10.1007/s10115-008-0141-7
Keywords
Rule cubes; Subgroup discovery; Descriptive induction; Causal analysis; Interactivity
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With the complexity of modern vehicles tremendously increasing, quality engineers play a key role within today's automotive industry. Field data analysis supports corrective actions in development, production and after sales support. We decompose the requirements and show that association rules, being a popular approach to generating explanative models, still exhibit shortcomings. Interactive rule cubes, which have been proposed recently, are a promising alternative. We extend this work by introducing a way of intuitively visualizing and meaningfully ranking them. Moreover, we present methods to interactively factorize a problem and validate hypotheses by ranking patterns based on expectations, and by browsing a cube-based network of related influences. All this is currently in use as an interactive tool for warranty data analysis in the automotive industry. A real-world case study shows how engineers successfully use it in identifying root causes of quality issues.
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