The fcbo's intro from sgt

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML><HEAD><TITLE>FCbO: Fast CbO</TITLE>
    <link rel="stylesheet" href="http://www.w3.org/StyleSheets/Core/Steely" type
="text/css">
    <style type="text/css">
      a:link, a:hover, a:visited { color: rgb(230,120,0); }
      h3 { font-weight: normal; }
      #footer { text-align: right; margin-top: 42px; }
      #footer a { color: black; font-weight: normal; }
      em { font-weight: normal; font-style: italic; }
      strong { font-style: normal; }
      #download { text-align: center; }
      table { margin: 1em auto 1em auto; }
      td { padding: .4em; border-left: solid 1px; border-bottom: solid 1px; }
      tr:first-child > td { border-top: solid 1px; font-style: italic; }
      td:last-child { border-right: solid 1px; }
    </style>
</HEAD><BODY>
<h1 align=center>FCbO: Fast CbO</h1>

<h2>NAME</h2>

<p>fcbo - computes formal concepts and maximal frequent
itemsets</p>

<h2>SYNOPSIS</h2>

<p><b>fcbo</b> [<i>OPTION</i>]... [<i>INPUT-FILE</i>]
[<i>OUTPUT-FILE</i>]</p>

<h2>DESCRIPTION</h2>
<p>This program computes intents of all formal concepts in
an object-attribute data set (a formal context), i.e. the
algorithm computes all maximal submatrices of a boolean
matrix which are full of 1&rsquo;s. The program implements
FCbO, a fast algorithm based on Kuznetsov&rsquo;s CbO with
improved canonicity test.</p>
<!-- INDENTATION -->
<p>The <i>INPUT-FILE</i> is in the usual FIMI format: each
line represents a transaction or an object and it contains
of a list of attributes/features/items. If the
<i>INPUT-FILE</i> is omitted or if it equals to
&lsquo;<i>-</i>&rsquo;, the program reads the input form the
<i>stdin</i>. The <i>OUTPUT-FILE</i> has a similar format,
each line represents one intent (itemset), where numbers
indicate attributes in the intent (itemset). If the
<i>OUTPUT-FILE</i> is omitted or if it equals to
&lsquo;<i>-</i>&rsquo;, the program writes the input to the
<i>stdout</i>.</p>

<H3>Optional arguments</H3>

<DL COMPACT>
<DT><B>-</B><I>index</I>,<DD>
sets the initial <i>index</i> of the first attribute. The
default value is 0, meaning that attributes are numbered
from 0 upwards. If a data set uses attributes numbered from
1, you should use the &lsquo;<b>-1</b>&rsquo; switch, and so
on.
<DT><B>-S</B><I>min-support</I>,<DD>
the minimal support considered is set to
<i>min-support</i>. The default value is 0, meaning that the
support is disregarded and all intents (itemsets) are
written to the output. If <i>min-support</i> is set to a
positive value, only itemsets having extents with at least
<i>min-support</i> are written to the output.
<DT><B>-V</B><I>level</I>,<DD>
sets the verbosity <I>level</I> to a specified value. Permitted values are
numbers from 0 up to 3. The default value is 1. Verbosity level 0 (no output)
just computes the intents and produces no output. Verbosity level 1 produces
lists of intents with no auxiliary output. Verbosity levels 2 and higher
write additional information to <I>stderr</I>.
</DL>

<h2>EXAMPLES</h2>

<b>fcbo -1 mushroom.dat</b>

<p>Computes all intents in the file named
<b>mushroom.dat</b> where <b>1</b> denotes the first
attribute in <b>mushroom.dat</b>. The output is written to
the standard output.</p>

<b>fcbo -S200 foo.dat output-intents.dat</b>

<p>Computes all intents in <b>foo.dat</b> with extents
having at least 200 objects, writing the output to
<b>output-intents.dat</b>.</p>

<H2>AUTHORS</H2>

<P>

Written by Jan Outrata and Vilem Vychodil.
<H2>REPORTING BUGS</H2>

<P>

Report bugs to &lt;<A HREF="mailto:[email protected]">[email protected]</A>&gt;.
<H2>COPYRIGHT</H2>

<P>

GNU GPL 2 (<A HREF="http://www.gnu.org/licenses/gpl-2.0.html">http://www.gnu.org/licenses/gpl-2.0.html</A>).
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
<P>

<H2>DOWNLOAD</H2>

<P>
The program can be obtained from
<A HREF="http://fcalgs.sourceforge.net">http://fcalgs.sourceforge.net</A>

</BODY>
</HTML>
sgt / fcbo Goto Github PK

fcbo's Introduction

Recommend Projects

React

Vue.js

Typescript

TensorFlow

Django

Laravel

D3

Recommend Topics

javascript

web

server

Machine learning

Visualization

Game

Recommend Org

Facebook

Microsoft

Google

Alibaba

D3

Tencent
