Abstract
This study proposes a relearning process for a prediction model after detecting structural change points. There are three problems with the detection of structural change points in time-series data: (1) how to generate a prediction model, (2) how to detect a structural change point rapidly, and (3) how the prediction model should relearn after detection. This article targets the third problem and proposes five relearning methods and a process that embeds the relearning process in the sequential probability ratio test. Two experiments, one using 20 generated data sets and the other TOPIX, which consists of 1104 time-series data points between 1991 and 2012, show that using past and future data after detecting the structural change points is helpful.
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Saga, R., Kaisaku, N., Tsuji, H. (2015). Relearning Process for SPRT in Structural Change Detection of Time-Series Data. In: Abou-Nasr, M., Lessmann, S., Stahlbock, R., Weiss, G. (eds) Real World Data Mining Applications. Annals of Information Systems, vol 17. Springer, Cham. https://doi.org/10.1007/978-3-319-07812-0_7
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