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Comments on: [MADS] Mahalanobis distance http://hea-www.harvard.edu/AstroStat/slog/2009/mads-mahalanobis-distance/ Weaving together Astronomy+Statistics+Computer Science+Engineering+Intrumentation, far beyond the growing borders Fri, 01 Jun 2012 18:47:52 +0000 hourly 1 http://wordpress.org/?v=3.4 By: vlk http://hea-www.harvard.edu/AstroStat/slog/2009/mads-mahalanobis-distance/comment-page-1/#comment-869 vlk Tue, 24 Mar 2009 19:25:56 +0000 http://hea-www.harvard.edu/AstroStat/slog/?p=1495#comment-869 I corrected it, Tom :) We're still feeling our way around this rather temperamental wordpress system. Comment preview, last we checked, completely messes up the spam filter (not that the filter is all that well behaved now -- it has been flagging comments as spam quite randomly, apologies to all those affected!) I corrected it, Tom :)

We’re still feeling our way around this rather temperamental wordpress system. Comment preview, last we checked, completely messes up the spam filter (not that the filter is all that well behaved now — it has been flagging comments as spam quite randomly, apologies to all those affected!)

]]> By: TomLoredo http://hea-www.harvard.edu/AstroStat/slog/2009/mads-mahalanobis-distance/comment-page-1/#comment-867 TomLoredo Tue, 24 Mar 2009 19:19:45 +0000 http://hea-www.harvard.edu/AstroStat/slog/?p=1495#comment-867 Darn, I hate how GroundTruth doesn't give you a preview or let you edit posts! Of course, the paper is by <em>Babu</em> et al.. Darn, I hate how GroundTruth doesn’t give you a preview or let you edit posts! Of course, the paper is by Babu et al..

]]> By: TomLoredo http://hea-www.harvard.edu/AstroStat/slog/2009/mads-mahalanobis-distance/comment-page-1/#comment-866 TomLoredo Tue, 24 Mar 2009 19:18:56 +0000 http://hea-www.harvard.edu/AstroStat/slog/?p=1495#comment-866 Hyunsook, here's another reference for you: <a href="http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B7CRS-4RVMXGV-3&_user=492137&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000022719&_version=1&_urlVersion=0&_userid=492137&md5=d0f36750ae6d92553478fc747479bc5a" rel="nofollow">Object detection in multi-epoch data</a> by Jogesh Babu et al. This appeared in a <a href="http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%2318002%232008%23999949995%23692046%23FLA%23&_cdi=18002&_pubType=J&view=c&_auth=y&_acct=C000022719&_version=1&_urlVersion=0&_userid=492137&md5=8ac6537b01072eb0381027cbcbe23e0e" rel="nofollow">special issue of Statistical Methodology devoted to astrostatistics</a>, published last July. Hyunsook, here’s another reference for you:

Object detection in multi-epoch data by Jogesh Babu et al.

This appeared in a special issue of Statistical Methodology devoted to astrostatistics, published last July.

]]> By: Jiangang http://hea-www.harvard.edu/AstroStat/slog/2009/mads-mahalanobis-distance/comment-page-1/#comment-864 Jiangang Mon, 16 Mar 2009 19:53:05 +0000 http://hea-www.harvard.edu/AstroStat/slog/?p=1495#comment-864 Well, we have been using M-distance to compare the galaxies in terms of their colors. One tricky thing about using M distance is the calculation of covariance. Since traditional estimator is sensitive to outliers, some robust procedures should be applied. Meanwhile, it will be sensible to use local covariance rather than global covariance, which needs some iterations. Well, we have been using M-distance to compare the galaxies in terms of their colors. One tricky thing about using M distance is the calculation of covariance. Since traditional estimator is sensitive to outliers, some robust procedures should be applied. Meanwhile, it will be sensible to use local covariance rather than global covariance, which needs some iterations.

]]> By: hlee http://hea-www.harvard.edu/AstroStat/slog/2009/mads-mahalanobis-distance/comment-page-1/#comment-862 hlee Fri, 13 Mar 2009 04:20:56 +0000 http://hea-www.harvard.edu/AstroStat/slog/?p=1495#comment-862 Because of some difficulties in sieving (I don't have an iphone to use the iFish app and my last year efforts was very human labor dependent) the flow of arxiv papers (ADS includes all arXiv disciplines in searching), I couldn't mention papers like yours. Always, new information and indication of my imperfect colanders is welcome. Because of some difficulties in sieving (I don’t have an iphone to use the iFish app and my last year efforts was very human labor dependent) the flow of arxiv papers (ADS includes all arXiv disciplines in searching), I couldn’t mention papers like yours. Always, new information and indication of my imperfect colanders is welcome.

]]> By: Raffaele D'Abrusco http://hea-www.harvard.edu/AstroStat/slog/2009/mads-mahalanobis-distance/comment-page-1/#comment-861 Raffaele D'Abrusco Thu, 12 Mar 2009 17:39:54 +0000 http://hea-www.harvard.edu/AstroStat/slog/?p=1495#comment-861 Very interesting post, as I have been using the Mahalanobis' distance recently I was delighted to know how frequently this useful distance can be found in astronomical papers. I hope you won't mind if I suggest to you my own publication where Mahalanobis' distance is used: http://lanl.arxiv.org/abs/0805.0156 . Very interesting post, as I have been using the Mahalanobis’ distance recently I was delighted to know how frequently this useful distance can be found in astronomical papers. I hope you won’t mind if I suggest to you my own publication where Mahalanobis’ distance is used: http://lanl.arxiv.org/abs/0805.0156 .

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