TY - GEN
T1 - On the discovery of weak periodicities in large time series
AU - Berberidis, Christos
AU - Vlahavas, Ioannis
AU - Aref, Walid G.
AU - Atallah, Mikhail
AU - Elmagarmid, Ahmed K.
PY - 2002
Y1 - 2002
N2 - The search for weak periodic signals in time series data is an active topic of research. Given the fact that rarely a real world dataset is perfectly periodic, this paper approaches this problem in terms of data mining, trying to discover weak periodic signals in time series databases, when no period length is known in advance. In existing time series mining algorithms, the period length is user-specified. We propose an algorithm for finding approximate periodicities in large time series data, utilizing autocorrelation function and FFT. This algorithm is an extension to the partial periodicity detection algorithm presented in a previous paper of ours. We provide some mathematical background as well as experimental results.
AB - The search for weak periodic signals in time series data is an active topic of research. Given the fact that rarely a real world dataset is perfectly periodic, this paper approaches this problem in terms of data mining, trying to discover weak periodic signals in time series databases, when no period length is known in advance. In existing time series mining algorithms, the period length is user-specified. We propose an algorithm for finding approximate periodicities in large time series data, utilizing autocorrelation function and FFT. This algorithm is an extension to the partial periodicity detection algorithm presented in a previous paper of ours. We provide some mathematical background as well as experimental results.
UR - http://www.scopus.com/inward/record.url?scp=84864839896&partnerID=8YFLogxK
U2 - 10.1007/3-540-45681-3_5
DO - 10.1007/3-540-45681-3_5
M3 - Conference contribution
AN - SCOPUS:84864839896
SN - 3540440372
SN - 9783540440376
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 51
EP - 61
BT - Principles of Data Mining and Knowledge Discovery - 6th European Conference, PKDD 2002, Proceedings
A2 - Elomaa, Tapio
A2 - Mannila, Heikki
A2 - Toivonen, Hannu
PB - Springer Verlag
T2 - 6th European Conference on Principles and Practice of Knowledge Discovery in Databases, PKDD 2002
Y2 - 19 August 2002 through 23 August 2002
ER -