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105 results about "Electronic finance" patented technology

Financial time series similarity query method based on K-chart expression

The invention discloses a financial time series similarity query method based on K-chart expression. The method comprises the following steps of feature extraction, index construction and query processing. The method comprises the following concrete steps of firstly, extracting basic mode and classic mode features for a financial time series based on K-chart expression, and respectively translating the basic mode and classic mode features into a basic string and a classic string; secondly, respectively constructing reverse indexes on the basic string and the classic string; for each query sequence, after the basic mode and classic mode features are extracted through the same way, respectively querying the two constructed reverse indexes to acquire two candidate sets, and then carrying out intersection operation to obtain a final candidate set; obtaining a final query result through follow-up processing. The financial time series similarity query method based on K-chart expression can effectively realize nearest neighbor query, has higher measurement precision and query efficiency, has favorable extensibility for time series length, nearest neighbor query scale and data set scale, and can play a significant role in the widened electronic finance trade market.
Owner:ZHEJIANG UNIV
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