[IOTDB-2609] Add a new lossy encoding method based on frequency domain

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.14.0
• Component/s: TsFile
• Labels: pull-request-available
• Assignee: Unassigned
• Reporter: Haoyu Wang
• Created: 25/Feb/22 07:16
• Updated: 18/Mar/22 15:08
• Resolved: 18/Mar/22 02:35

Description

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 https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=199536917

 

Issue Links

• links to: GitHub Pull Request #5118