Title

State-Driven Dynamic Sensor Selection And Prediction With State-Stacked Sparseness

Abstract

An important problem in large-scale sensor mining is that of selecting relevant sensors for prediction purposes. Selecting small subsets of sensors, also referred to as active sensors, often leads to lower operational costs, and it reduces the noise and information overload for prediction. Existing sensor selection and prediction models either select a set of sensors a priori, or they use adaptive algorithms to determine the most relevant sensors for prediction. Sensor data sets often show dynamically varying patterns, because of which it is suboptimal to select a fixed subset of active sensors. To address this problem, we develop a novel dynamic prediction model that uses the notion of hidden system states to dynamically select a varying subset of sensors. These hidden system states are automatically learned by our model in a data-driven manner. The proposed algorithm can rapidly switch between different sets of active sensors when the model detects the (periodic or intermittent) change in the system state. We derive the dynamic sensor selection strategy by minimizing the error rates in tracking and predicting sensor readings over time. We introduce the notion of state-stacked sparseness to select a subset of the most critical sensors as a function of evolving system state. We present experimental results on two real sensor datasets, corresponding to oil drilling rig sensors and intensive care unit (ICU) sensors, and demonstrate the superiority of our approach with respect to other models.

Publication Date

8-10-2015

Publication Title

Proceedings of the ACM SIGKDD International Conference on Knowledge Discovery and Data Mining

Volume

2015-August

Number of Pages

945-954

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1145/2783258.2783390

Socpus ID

84954150557 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84954150557

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