Utilities
Every software I developed is licensed under the GNU General
Public License v3. This page hosts some useful tools to test
pattern mining in synthetic noisy tensors, two Beamerposter
themes, and three Shell scripts.
Testing pattern mining in synthetic
noisy tensors
This archive
contains the source codes of four useful commands to test
pattern mining in synthetic noisy tensors. The first
one, gennsets
, generates randomly positioned
n-sets of any sizes in a null tensor of any sizes. Then, the
second one, noise
, or the third
one, num-noise
, turns this "perfect" tensor
noisy. The difference between the two commands is
that noise
outputs another Boolean tensor (the
noise only switches Boolean values),
wheras num-noise
turns the tensor fuzzy (the
noise turns Boolean values into degrees of
membership). Finally, the fourth
command, n-set-diff
, provides a tuple-based
comparison of the hidden patterns (as output
by gennsets
) with those discovered in the noisy
version of the tensor.
Please, take the time to read the INSTALL files before
compiling these commands and the README files before using
them.
If you want to reproduce experiments reported in the
article
introducing Fenster,
you may be interested
in these
Bash scripts. The source code of DCE is not available on
the website of its
author anymore. Since it was distributed under the
terms of the GNU GPL, we are free to redistribute
it. Thus, here is the
source code of DCE. The only improvement w.r.t. the
original code is the added possibility to specify
different minimal size constraints for the different
dimensions of the tensor.
Beamerposter themes for the
DCC
This
archive contains a
theme beamerposter
. The background and most
of the colors come
from DCC's
website. The archive contains as well an example
source file, a Makefile, and the resulting PDF. The
example poster presents some useful commands to structure
it.
To use the theme, beamer
and beamerposter
are (obviously) required. On
Debian and derivatives (including the *buntu), use the
package manager to install latex-beamer
and texlive-latex-extra
. If you do not want the
whole texlive-latex-extra
package (or if your
distribution of choice does not
ship beamerposter
),
visit beamerposter
's
website.
If you feel nostalgic about DCC's previous website, here
is another
theme beamerposter
that reuses its
background.
offline-emerge
This Bash script allows to keep the power of Gentoo's
package manager without a local Internet connection. Every
action that requires fetching some files from the Net lists
instead, on a removable device (typically a USB key), the
URLs of these files. A script on the removable device takes
care of the download from any *NIX system (GNU/Linux, BSD,
Mac OS X, etc.) connected to the Internet. Back on the
Gentoo, a command allows to execute every postponed
action. In this way, despite the lack of an Internet
connection, it is easy to update the Portage tree, to
install a new software or to update the whole system.
Installation
An ebuild is
available here. Place
it in your overlay and execute:
# emerge offline-emerge
If you do not have an Internet connection, you first have
to manually
download the source code and place it among your
distfiles.
Finally you have to define the
variable MOVINGDIR
in /etc/make.conf
. This variable must contain
the path to the directory offline-emerge
will
use on your removable device. For example, to
use /media/usbdisk/moving-portage
as a
directory on your removable device:
# echo 'MOVINGDIR="/media/usbdisk/moving-portage"' >>
/etc/make.conf
At the first execution of offline-emerge
, the
files on the removable device will be created.
Usage
If you can read
French, the
French version of this section may be useful to you. To
know everything about offline-emerge
, please
read its manual:
$ man offline-emerge
pdf-page-grep
pdf-page-grep
searches patterns (by default,
basic regular expressions) in PDF files and concatenate the
pages with matches. The arguments starting with "-"
(e.g., -F
or --ignore-case
) are
considered options. They are passed
to grep
. The output file is named after the
"basename" of the last matching PDF file followed by
"-matches.pdf".
The script is very short and simple. It is an occasion to
learn. For this purpose, it is quite heavily
commented. Moreover, Lucas Westermann made me the honor to
write a pedagogical article about it. This article was
published
in the
issue 89 (pages 10–11) of the Full Circle Magazine,
which is freely readable.
If you do want a PDF output but a text one with the sole
matching lines, then
install pdfgrep
,
a fully-featured program that probably is in the
repositories of your GNU/Linux distribution.
Installation
Besides grep
, the script mainly relies
on pdfinfo
, pdftotext
, pdfunite
,
and pdfjam
. In Debian and derivatives, the
package named "poppler-utils" provides the three first
commands and "texlive-extra-utils"
provides pdfjam
. Both packages must be
installed. pdf-page-grep
was tested
on bash
and dash
but probably
works as well on other shells. Just
download it and
execute it! Running it with no argument makes it print a usage
help.
Non-interactive usage
pdf-page-grep
can be non-interactively
used. To do so, redirect the standard input to a file with
one pattern per line and an empty line at the
end. pdf-page-grep
's exit status is 0 if pages
matched the patterns, and 1 otherwise.
trivialibre
According to its
Web site, "Trivialibre is a set of questions dealing
with Free Software for the famous Trivial Pursuit
game". My tiny contribution consists
in a small
Shell script that asks those questions in graphical
dialog boxes. Because the original questions are in
French, you probably are not interested in them (if you
are,
download this
archive instead). However you may still be interested
in the script as a way to, for instance, study for
exams. Indeed, adding/removing questions (resp. categories
of questions), is only a matter of editing the files in
the "categories" directory (resp. adding/removing files in
this directory). The script itself needs not be touched
and was translated into English. A few questions from
Trivialibre were translated as well to make examples.
Features
- The player chooses a category or select "Random!" for a
random selection;
- A 20s delay (with a progression bar) is let for the
player to find an answer (or not);
- This delay, in seconds, actually is a default value,
hence can be modified (it is the only, facultative, option
of the script);
- The yet unasked questions are stored on the disk so that
the game can be quit without risking being asked the same
questions next time;
- When a category is exhausted, all its questions are
taken in a different order.
The script is very short and simple. It is an occasion to
learn. For this purpose, it is quite heavily
commented. Moreover, Lucas Westermann made me the honor to
write a pedagogical article about it. This article was
published
in the
issue 58 (pages 5–7) of the Full Circle Magazine, which
is freely readable.
Installation
The script relies
on Zenity,
which is, I believe, installed on most GNU/Linux
distributions (especially those using GNOME). If it is not
the case, it probably is in the repositories. The other
executed commands should not raise any trouble if your
system has a reasonably recent version of GNU coreutils
(usage of shuf
). The script has been tested
on bash
, dash
and zsh
. It should probably work as well on
other shells such as ksh
.
To install the script,
this
archive (or
this one
for hundreds of questions in French) must first be
downloaded and uncompressed wherever you want. Then, it is
only about executing trivialibre
to play. It
is, of course, possible to create a launcher (typically in
the "Games" menu) and an icon is available in the archive.
srtfold
Given in argument a maximal number of characters per
line, srtfold
reformat .srt subtitles to satisfy
that constraint (except for words that, alone, exceed it) and
to display at most two lines at a time. srtfold
heuristically balances the number of characters per line and
prefers a longer second line. If an input subtitle cannot be
displayed within two lines during the provided time interval,
that interval is divided into sub-intervals whose duration is
proportional to the number of characters. srtfold
can process slightly-malformed subtitles (more than one blank
lines between subtitles, missing/supernumerary spaces around
"-->", missing hours, dots separating seconds from
milliseconds) that it fixes. It removes supernumerary spaces
between words too, but keeps the input line breaks. Here
is the Shell
script. Executing it with no argument makes it print a
usage help.