关键词: 时间序列, 窗口查询, TW-索引

Abstract: The paper introduces a method of query, i.e., window query about time series, which is the integrative technique of forward query and inverse query. In order to make up the disadvantage of traditional query method, the paper proposes a novel index technique i.e., TW-index to solve the window query about time series. First, the method of establishing TW-index is introduced in detail. Then the window query based on the TW-index is expounded. Second, the methods and procedures of establishing TW-index and window query during appending data dynamically are presented. Third, TW-index compares with index methods such as ES-index and IP-index. Finally, an example of TW-index applying to window query of time series is given.

Key words: Time Series, Window Query, TW-index