Lossy compression method and system based on time series data

• Main Authors: LIU KEQIN, ZENG WEISHENG, ZHANG BO, LIU WENZHE, LUO HAO, WANG BO, LI HAOCAI, ZHANG JING, ZOU GUANGQIU, LUO CHANCHUN, LI ZHIJIN, XIANG CHUNBO, LIU YOUZHI, LUO WENLI, LI GAOZHI, TANG XINHUA
• Format: Patent
• Language: Chinese; English
• Published: 12.07.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a lossy compression method and system based on time series data, and the method comprises the steps: enabling the time and data values to serve as two axes of a coordinate system respectively, using all the time series data as points in the coordinate system, and building the coordinate system; in the coordinate system, each point serves as a current point, connecting the current point with an adjacent point with the previous time, connecting the current point with an adjacent point with the later time, forming a curve with the current point as a break point, and deleting the current point with the slope meeting the abandoning condition. According to the method, aiming at gradual change time sequence data, data points with small slope change are deleted, the data points with large slope change are reserved through a compression algorithm, the compression rate is high, and the compression precision is also high. 本发明公开了一种基于时序数据有损压缩方法及系统，该方法包括：将时间与数据值分别作为坐标系的两个轴，所有时序数据作为坐标系中的点，构建坐标系；在坐标系中