Threshold Similarity Queries in Large Time Series Databases
Johannes Aßfalg, H.-P. Kriegel, Peer Kröger, Peter Kunath, Alexey Pryakhin, Matthias Renz · 2006
Similarity search in time series data is an active area of research. In this paper, we introduce the novel concept of threshold-similarity queries in time series databases which report those time series exceeding a user-defined query threshold at similar time frames compared to the query time series. In addition, we present a new data structure to support threshold similarity queries efficiently. The performance of our solution is demonstrated by an extensive experimental evaluation.