jm + fps   5

MRI software bugs could upend years of research - The Register
In their paper at PNAS, they write: “the most common software packages for fMRI analysis (SPM, FSL, AFNI) can result in false-positive rates of up to 70%. These results question the validity of some 40,000 fMRI studies and may have a large impact on the interpretation of neuroimaging results.”

For example, a bug that's been sitting in a package called 3dClustSim for 15 years, fixed in May 2015, produced bad results (3dClustSim is part of the AFNI suite; the others are SPM and FSL). That's not a gentle nudge that some results might be overstated: it's more like making a bonfire of thousands of scientific papers.

Further: “Our results suggest that the principal cause of the invalid cluster inferences is spatial autocorrelation functions that do not follow the assumed Gaussian shape”.

The researchers used published fMRI results, and along the way they swipe the fMRI community for their “lamentable archiving and data-sharing practices” that prevent most of the discipline's body of work being re-analysed. ®
fmri  science  mri  statistics  cluster-inference  autocorrelation  data  papers  medicine  false-positives  fps  neuroimaging 
july 2016 by jm
#BPjMleak
'Leak of the secret German Internet Censorship URL blacklist BPjM-Modul'.

Turns out there's a blocklist of adult-only or prohibited domains issued by a German government department, The Federal Department for Media Harmful to Young Persons (German: "Bundesprüfstelle für jugendgefährdende Medien" or BPjM), issued in the form of a list of hashes of those domains. These were extracted from an AVM router, then the hashes were brute forced using several other plaintext URL blocklists and domain lists.

Needless to say, there's an assortment of silly false positives, such as the listing of the website for the 1997 3D Realms game "Shadow Warrior": http://en.wikipedia.org/wiki/Shadow_Warrior
hashes  reversing  reverse-engineering  germany  german  bpjm  filtering  blocklists  blacklists  avm  domains  censorship  fps 
july 2014 by jm
Sky parental controls break many JQuery-using websites
An 11 hour outage caused by a false positive in Sky's anti-phishing filter; all sites using the code.jquery.com CDN for JQuery would have seen errors.
Sky still appears to be blocking code.jquery.com and all files served via the site, and more worryingly is that if you try to report the incorrect category, once signing in on the Sky website you an error page. We suspect the site was blocked due to being linked to by a properly malicious website, i.e. code.jquery.com and some javascript files were being used on a dodgy website and every domain mentioned was subsequently added to a block list.


(via Tony Finch)
via:fanf  sky  filtering  internet  uk  anti-phishing  phish  jquery  javascript  http  web  fps  false-positives 
january 2014 by jm
O2.ie blocking popular image-hosting sites imgur.com, imageshack.com
apparently the IWF blocklist now lists them, in a typically overzealous false-positive-prone move, and O2 intercept and block IWF-listed URLs
iwf  fail  blocking  filtering  o2  ireland  imgur  imageshack  censorship  fps  from delicious
july 2010 by jm
O2 Ireland blocking sites listed in the UK IWF list
supposedly should only list child porn sites, but sounds like it's got frequent false positives on file upload/download services nowadays
fps  o2  blocking  ireland  contract  false-positives  iwf  uk  law  from delicious
october 2009 by jm

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