Resolving Data Value Conflict with Last Observation Carried Forward (LOCF)ΒΆ

Causal Step

This step is regarded as a conflict resolution strategy and uses the most recent value to resolve the data value conflict.

Input Parameters

  1. Input data sources

Output Parameters

  1. Output data without conflict values
  2. All found conflict values

Workflow

../../../../_images/workflow49.svg

References

    1. Bleiholder and F. Naumann, Conflict handling strategies in an integrated information system, In Proceedings of the International Workshop on Information Integration on the Web (IIWeb), Edinburgh, UK, 2006.
    1. Dong, F. Naumann, Data Fusion - Resolving Data Conflicts for Integration, In Proceedings of the VLDB Endowment VLDB Endowment, vol. 2, Nr. 2, 2009.

    http://dc-pubs.dbs.uni-leipzig.de/files/fusion_vldbTutorial%5B1%5D.pdf