Metrics for Offline Evaluation of Prognostic Performance

Description

Prognostic performance evaluation has gained significant attention in the past few years.*Currently, prognostics concepts lack standard definitions and suffer from ambiguous and inconsistent interpretations. This lack of standards is in part due to the varied end- user requirements for different applications, time scales, available information, domain dynamics, etc. to name a few. The research community has used a variety of metrics largely based on convenience and their respective requirements. Very little attention has been focused on establishing a standardized approach to compare different efforts. This paper presents several new evaluation metrics tailored for prognostics that were recently introduced and were shown to effectively evaluate various algorithms as compared to other conventional metrics. Specifically, this paper presents a detailed discussion on how these metrics should be interpreted and used. These metrics have the capability of incorporating probabilistic uncertainty estimates from prognostic algorithms. In addition to quantitative assessment they also offer a comprehensive visual perspective that can be used in designing the prognostic system. Several methods are suggested to customize these metrics for different applications. Guidelines are provided to help choose one method over another based on distribution characteristics. Various issues faced by prognostics and its performance evaluation are discussed followed by a formal notational framework to help standardize subsequent developments.

Resources

Name Format Description Link
33 2010_IJPHM_Metrics.pdf https://c3.nasa.gov/dashlink/static/media/publication/2010_IJPHM_Metrics_2.pdf
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.5067%2F1J4UCYY49IW4
34 Sample plot of AIRS/AMSU Level 3 Retrieval. https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/SNDRAQIML3SDCCP_2.png
21 Access the data via HTTPS. https://sounder.gesdisc.eosdis.nasa.gov/data/Aqua_Sounder_Level3/SNDRAQIML3SDCCP.2
21 Access the data via the OPeNDAP protocol. https://sounder.gesdisc.eosdis.nasa.gov/opendap/Aqua_Sounder_Level3/SNDRAQIML3SDCCP.2/
21 Search the Earthdata website https://search.earthdata.nasa.gov/search?q=SNDRAQIML3SDCCP+2
33 CLIMCAPS Product User Guide:File Format and Definition https://docserver.gesdisc.eosdis.nasa.gov/public/project/Sounder/CLIMCAPS.L3.V2.README.pdf
33 CLIMCAPS ATBD https://docserver.gesdisc.eosdis.nasa.gov/public/project/Sounder/CLIMCAPS.V2.ATBD.pdf
21 AIRS home page at NASA/JPL. General information on the AIRS instrument, algorithms, and other AIRS-related activities can be found. https://airs.jpl.nasa.gov/index.html
33 2010_IJPHM_Metrics.pdf https://c3.nasa.gov/dashlink/static/media/publication/2010_IJPHM_Metrics_2.pdf

Tags

  • dashlink
  • nasa
  • ames

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