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<title>MADlib: conjugate_gradient.sql_in File Reference</title>
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<div class="header">
  <div class="summary">
<a href="#func-members">Functions</a>  </div>
  <div class="headertitle">
<div class="title">conjugate_gradient.sql_in File Reference</div>  </div>
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<div class="contents">

<p>SQL function computing Conjugate Gradient.  
<a href="#details">More...</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ab94e8a12cc9c2d0dac35168721ec8585"><td class="memItemLeft" align="right" valign="top">float []&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="conjugate__gradient_8sql__in.html#ab94e8a12cc9c2d0dac35168721ec8585">conjugate_gradient</a> (text matrix, text val_id, text row_id, float[] b, float precision_limit, int verbosity)</td></tr>
<tr class="memdesc:ab94e8a12cc9c2d0dac35168721ec8585"><td class="mdescLeft">&#160;</td><td class="mdescRight">Compute conjugate gradient.  <a href="#ab94e8a12cc9c2d0dac35168721ec8585">More...</a><br /></td></tr>
<tr class="separator:ab94e8a12cc9c2d0dac35168721ec8585"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:abe53a640e2287e06587eb1541fb6b4a3"><td class="memItemLeft" align="right" valign="top">float []&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="conjugate__gradient_8sql__in.html#abe53a640e2287e06587eb1541fb6b4a3">conjugate_gradient</a> (text matrix, text val_id, text row_id, float[] b, float precision_limit)</td></tr>
<tr class="separator:abe53a640e2287e06587eb1541fb6b4a3"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><dl class="section date"><dt>Date</dt><dd>March 2011 </dd></dl>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="ab94e8a12cc9c2d0dac35168721ec8585"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab94e8a12cc9c2d0dac35168721ec8585">&#9670;&nbsp;</a></span>conjugate_gradient() <span class="overload">[1/2]</span></h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">float [] conjugate_gradient </td>
          <td>(</td>
          <td class="paramtype">text&#160;</td>
          <td class="paramname"><em>matrix</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">text&#160;</td>
          <td class="paramname"><em>val_id</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">text&#160;</td>
          <td class="paramname"><em>row_id</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float []&#160;</td>
          <td class="paramname"><em>b</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float&#160;</td>
          <td class="paramname"><em>precision_limit</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>verbosity</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">matrix</td><td>Name of the table containing argument matrix A </td></tr>
    <tr><td class="paramname">val_id</td><td>Name of the column contains row values </td></tr>
    <tr><td class="paramname">row_id</td><td>Name of the column contains row number </td></tr>
    <tr><td class="paramname">b</td><td>Array containing values of b </td></tr>
    <tr><td class="paramname">precision_limit</td><td>Precision threshold after which process will terminate </td></tr>
    <tr><td class="paramname">verbosity</td><td>Verbose flag (0 = false, 1 = true) </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Array containing values of x </dd></dl>

</div>
</div>
<a id="abe53a640e2287e06587eb1541fb6b4a3"></a>
<h2 class="memtitle"><span class="permalink"><a href="#abe53a640e2287e06587eb1541fb6b4a3">&#9670;&nbsp;</a></span>conjugate_gradient() <span class="overload">[2/2]</span></h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">float [] conjugate_gradient </td>
          <td>(</td>
          <td class="paramtype">text&#160;</td>
          <td class="paramname"><em>matrix</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">text&#160;</td>
          <td class="paramname"><em>val_id</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">text&#160;</td>
          <td class="paramname"><em>row_id</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float []&#160;</td>
          <td class="paramname"><em>b</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float&#160;</td>
          <td class="paramname"><em>precision_limit</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

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