zeroth.html
来自「an analysis software with souce code for」· HTML 代码 · 共 129 行
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129 行
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zeroth
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<h1 align=center>Description of the program: <font color=Blue>zeroth
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This program makes a <a href="../chaospaper/node18.html" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/chaospaper/node18.html">zeroth order</a>
ansatz and estimates the one step
prediction error of the model. This is done by searching for all neighbors
of the point to be forecasted and taking as its image the average of
the images of the neighbors. The given
forecast error is normalized to the variance of the data.
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<h2 align=center>Usage:</h2>
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<font color=Red>zeroth [Options]</font>
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Everything not being a valid option will be interpreted as a potential datafile name. Given no datafile at all, means read stdin. Also <font color=Red>-</font> means stdin
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Possible options are:
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<table border=2>
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<th>Option
<th>Description
<th>Default
</tr>
<tr>
<th>-l#
<td>number of points to use
<td>whole file
</tr>
<tr>
<th>-x#
<td>number of lines to be ignored
<td>0
</tr>
<tr>
<th>-c#
<td><a href="../general.html#column" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/general.html#column">column to be read</a>
<td>1
</tr>
<tr>
<th>-m#
<td>embedding dimension
<td>3
</tr>
<tr>
<th>-d#
<td>delay for the embedding
<td>1
</tr>
<tr>
<th>-n#
<td>for how many reference points should the error be calculated
<td>all
</tr>
<tr>
<th>-S#
<td>what should the temporal distance between the reference points be
<td>1
</tr>
<tr>
<th>-k#
<td>minimal numbers of neighbors for the fit
<td>30
</tr>
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<th>-r#
<td>neighborhood size to start with
<td>(data interval)/1000
</tr>
<tr>
<th>-f#
<td>factor to increase the neighborhood size<br> if not enough
neighbors were found
<td>1.2
</tr>
<tr>
<th>-s#
<td>steps to be forecasted x<sub>n+steps</sub>=av(x<sub>i+steps</sub>)
<td>1
</tr>
<tr>
<th>-o[#]
<td><a href="../general.html#outfile" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/general.html#outfile">output file name</a>
<td>without file name: 'datafile'.zer<br>
(or stdin.zer if stdin was read)<br>
If no -o is given stdout is used
</tr>
<tr>
<th>-V#
<td><a href="../general.html#verbosity" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/general.html#verbosity">verbosity level</a><br>
0: only panic messages<br>
1: add input/output messages
<td>1
</tr>
<tr>
<th>-h
<td>show these options
<td>none
</tr>
</table>
</center>
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<h2 align=center>Description of the Output</h2>
The output consists of <font color=blue>s</font> lines, each of which
containing the steps forecasted (first column) and the relative
forecast error (second column). Relative means that the forecast error
is devided by the standard deviation of the data.
<hr>
View the <a href="../../source_c/zeroth.c" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/source_c/zeroth.c"> C-sources</a>.
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See also <a href="../wuppertal/predict.html" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/wuppertal/predict.html">predict</a> which does essentially the
same but has some different options. The program <a
href="mzeroth.html" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/dresden/mzeroth.html">mzeroth</a> can handle multivariate data, and
<a
href="xzero.html" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/dresden/xzero.html">xzero</a> does cross-predictions.
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<a href="../contents.html" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/docs/contents.html">Table of Contents</a> * <a href="../../index.html" tppabs="http://www.mpipks-dresden.mpg.de/~tisean/TISEAN_2.0/index.html" target="_top">TISEAN home</a>
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