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- Andersson, Björn,1984-Uppsala universitet,Statistiska institutionen (author)
Sensitivity analysis of violations of the faithfulness assumption
- Article/chapterEnglish2014
Publisher, publication year, extent ...
- 2013-01-28
- Taylor & Francis Group,2014
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:umu-62098
- https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-62098URI
- https://doi.org/10.1080/00949655.2012.755975DOI
- https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-194832URI
Supplementary language notes
- Language:English
- Summary in:English
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Notes
- We study implications of violations of the fatihfulness condition due to parameter cancellations on estimation of the DAG skeleton. Three settings are investigated: when i) faithfulness is guaranteed ii) faithfulness is not guaranteed and iii) the parameter distributions are concentrated around unfaithfulness (near-unfaithfulness). In a simulation study the effetcs of the different settings are compared using the PC and MMPC algorithms. The results show that the performance in the faithful case is almost unchanged compared to the unrestricted case whereas there is a general decrease in performance under the near-unfaithful case as compared to the unrestricted case. The response to near-unfaithful parameterisations is similar between two algorithms, with the MMPC algorithm having higher true positive rates and the PC algorithm having lower false positive rates.
Subject headings and genre
- NATURVETENSKAP Matematik Sannolikhetsteori och statistik hsv//swe
- NATURAL SCIENCES Mathematics Probability Theory and Statistics hsv//eng
- DAG
- graphical models
- model search
- skeleton
- structure learning
- Statistics
- statistik
- Statistics
Added entries (persons, corporate bodies, meetings, titles ...)
- Waernbaum, Ingeborg,1972-Umeå universitet,Statistik(Swepub:uu)ingwa901 (author)
- Uppsala universitetStatistiska institutionen (creator_code:org_t)
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- In:Journal of Statistical Computation and Simulation: Taylor & Francis Group84:7, s. 1608-16200094-96551563-5163
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