/usr/ is in octave-data-smoothing 1.3.0-4.
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/usr/share/
/usr/share/octave/
/usr/share/octave/packages/
/usr/share/octave/packages/data-smoothing-1.3.0/
/usr/share/octave/packages/data-smoothing-1.3.0/rgdtsmcore.m
/usr/share/octave/packages/data-smoothing-1.3.0/rgdtsmcorewrap.m
/usr/share/octave/packages/data-smoothing-1.3.0/doc-cache
/usr/share/octave/packages/data-smoothing-1.3.0/ddmat.m
/usr/share/octave/packages/data-smoothing-1.3.0/regdatasmooth.m
/usr/share/octave/packages/data-smoothing-1.3.0/packinfo/
/usr/share/octave/packages/data-smoothing-1.3.0/packinfo/INDEX
/usr/share/octave/packages/data-smoothing-1.3.0/packinfo/DESCRIPTION
/usr/share/octave/packages/data-smoothing-1.3.0/packinfo/NEWS
/usr/share/doc/
/usr/share/doc/octave-data-smoothing/
/usr/share/doc/octave-data-smoothing/NEWS.gz
/usr/share/doc/octave-data-smoothing/copyright
/usr/share/doc/octave-data-smoothing/changelog.Debian.gz