Francisco Martínez-Álvarez Alicia Troncoso Lora José C. Riquelme Improving Time Series Forecasting by Discovering Frequent Episodes in Sequences. 357-368 2009 IDA http://dx.doi.org/10.1007/978-3-642-03915-7_31 conf/ida/2009ida db/conf/ida/ida2009ida.html#Martinez-AlvarezLR09