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Posted to notifications@iotdb.apache.org by "Haoyu Wang (Jira)" <ji...@apache.org> on 2022/02/25 07:17:00 UTC

[jira] [Created] (IOTDB-2609) Add a new lossy encoding method based on frequency domain

Haoyu Wang created IOTDB-2609:
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             Summary: Add a new lossy encoding method based on frequency domain
                 Key: IOTDB-2609
                 URL: https://issues.apache.org/jira/browse/IOTDB-2609
             Project: Apache IoTDB
          Issue Type: New Feature
          Components: TsFile
            Reporter: Haoyu Wang
         Attachments: image2022-2-23_16-25-21.png

A new lossy encoding method named FREQ is added. The key idea is that the time sequence is transformed to frequency domain and only the frequency components with high energy are reserved.  

 

The structure of FREQ encoding is shown in the attachment. More details are shown in [http://ise.thss.tsinghua.edu.cn/confluence/pages/viewpage.action?pageId=64527651]

 



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