| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
| <html xmlns="http://www.w3.org/1999/xhtml"> |
| <head> |
| <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> |
| <title>MADlib: cross_validation.sql_in File Reference</title> |
| |
| <link href="tabs.css" rel="stylesheet" type="text/css"/> |
| <link href="doxygen.css" rel="stylesheet" type="text/css" /> |
| <link href="navtree.css" rel="stylesheet" type="text/css"/> |
| <script type="text/javascript" src="jquery.js"></script> |
| <script type="text/javascript" src="resize.js"></script> |
| <script type="text/javascript" src="navtree.js"></script> |
| <script type="text/javascript"> |
| $(document).ready(initResizable); |
| </script> |
| <link href="search/search.css" rel="stylesheet" type="text/css"/> |
| <script type="text/javascript" src="search/search.js"></script> |
| <script type="text/javascript"> |
| $(document).ready(function() { searchBox.OnSelectItem(0); }); |
| </script> |
| <script src="../mathjax/MathJax.js"> |
| MathJax.Hub.Config({ |
| extensions: ["tex2jax.js", "TeX/AMSmath.js", "TeX/AMSsymbols.js"], |
| jax: ["input/TeX","output/HTML-CSS"], |
| }); |
| </script> |
| </head> |
| <body> |
| <div id="top"><!-- do not remove this div! --> |
| |
| |
| <div id="titlearea"> |
| <table cellspacing="0" cellpadding="0"> |
| <tbody> |
| <tr style="height: 56px;"> |
| |
| |
| <td style="padding-left: 0.5em;"> |
| <div id="projectname">MADlib |
|  <span id="projectnumber">0.7</span> <span style="font-size:10pt; font-style:italic"><a href="../latest/./cross__validation_8sql__in.html"> A newer version is available</a></span> |
| </div> |
| <div id="projectbrief">User Documentation</div> |
| </td> |
| |
| |
| |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| |
| <!-- Generated by Doxygen 1.7.5.1 --> |
| <script type="text/javascript"> |
| var searchBox = new SearchBox("searchBox", "search",false,'Search'); |
| </script> |
| <script type="text/javascript" src="dynsections.js"></script> |
| <div id="navrow1" class="tabs"> |
| <ul class="tablist"> |
| <li><a href="index.html"><span>Main Page</span></a></li> |
| <li><a href="modules.html"><span>Modules</span></a></li> |
| <li class="current"><a href="files.html"><span>Files</span></a></li> |
| <li> |
| <div id="MSearchBox" class="MSearchBoxInactive"> |
| <span class="left"> |
| <img id="MSearchSelect" src="search/mag_sel.png" |
| onmouseover="return searchBox.OnSearchSelectShow()" |
| onmouseout="return searchBox.OnSearchSelectHide()" |
| alt=""/> |
| <input type="text" id="MSearchField" value="Search" accesskey="S" |
| onfocus="searchBox.OnSearchFieldFocus(true)" |
| onblur="searchBox.OnSearchFieldFocus(false)" |
| onkeyup="searchBox.OnSearchFieldChange(event)"/> |
| </span><span class="right"> |
| <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a> |
| </span> |
| </div> |
| </li> |
| </ul> |
| </div> |
| <div id="navrow2" class="tabs2"> |
| <ul class="tablist"> |
| <li><a href="files.html"><span>File List</span></a></li> |
| <li><a href="globals.html"><span>File Members</span></a></li> |
| </ul> |
| </div> |
| </div> |
| <div id="side-nav" class="ui-resizable side-nav-resizable"> |
| <div id="nav-tree"> |
| <div id="nav-tree-contents"> |
| </div> |
| </div> |
| <div id="splitbar" style="-moz-user-select:none;" |
| class="ui-resizable-handle"> |
| </div> |
| </div> |
| <script type="text/javascript"> |
| initNavTree('cross__validation_8sql__in.html',''); |
| </script> |
| <div id="doc-content"> |
| <div class="header"> |
| <div class="summary"> |
| <a href="#func-members">Functions</a> </div> |
| <div class="headertitle"> |
| <div class="title">cross_validation.sql_in File Reference</div> </div> |
| </div> |
| <div class="contents"> |
| |
| <p>SQL functions for cross validation. |
| <a href="#details">More...</a></p> |
| |
| <p><a href="cross__validation_8sql__in_source.html">Go to the source code of this file.</a></p> |
| <table class="memberdecls"> |
| <tr><td colspan="2"><h2><a name="func-members"></a> |
| Functions</h2></td></tr> |
| <tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="cross__validation_8sql__in.html#aa151eb3fa9acc7f4cc33236e22ad4362">cv_linregr_train</a> (varchar tbl_source, varchar col_ind_var, varchar col_dep_var, varchar tbl_result)</td></tr> |
| <tr><td class="mdescLeft"> </td><td class="mdescRight">Simple interface of cross-validation, which has no limitation on lock number. <a href="#aa151eb3fa9acc7f4cc33236e22ad4362"></a><br/></td></tr> |
| <tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aa572f1f57c0dd106b30948928161d8cc"></a><!-- doxytag: member="cross_validation.sql_in::cv_linregr_predict" ref="aa572f1f57c0dd106b30948928161d8cc" args="(varchar tbl_model, varchar tbl_newdata, varchar col_ind_var, varchar col_id, varchar tbl_predict)" --> |
| void </td><td class="memItemRight" valign="bottom"><a class="el" href="cross__validation_8sql__in.html#aa572f1f57c0dd106b30948928161d8cc">cv_linregr_predict</a> (varchar tbl_model, varchar tbl_newdata, varchar col_ind_var, varchar col_id, varchar tbl_predict)</td></tr> |
| <tr><td class="mdescLeft"> </td><td class="mdescRight">A wrapper for linear regression prediction. <br/></td></tr> |
| <tr><td class="memItemLeft" align="right" valign="top">boolean </td><td class="memItemRight" valign="bottom"><a class="el" href="cross__validation_8sql__in.html#a66b3cb92a758ed6ea3b8da7c6dfa516c">logregr_predict</a> (float8[] coef, float8[] col_ind)</td></tr> |
| <tr><td class="mdescLeft"> </td><td class="mdescRight">A prediction function for logistic regression. <a href="#a66b3cb92a758ed6ea3b8da7c6dfa516c"></a><br/></td></tr> |
| <tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="cross__validation_8sql__in.html#ac7dbc115f0c4624ccbf62b2d5494388d">cv_logregr_predict</a> (varchar tbl_model, varchar tbl_newdata, varchar col_ind_var, varchar col_id, varchar tbl_predict)</td></tr> |
| <tr><td class="mdescLeft"> </td><td class="mdescRight">A prediction function for logistic regression The result is stored in the table of tbl_predict. <a href="#ac7dbc115f0c4624ccbf62b2d5494388d"></a><br/></td></tr> |
| <tr><td class="memItemLeft" align="right" valign="top">integer </td><td class="memItemRight" valign="bottom"><a class="el" href="cross__validation_8sql__in.html#a2d1571ffa794176a5dfed9d35e70fed7">logregr_accuracy</a> (float8[] coef, float8[] col_ind, boolean col_dep)</td></tr> |
| <tr><td class="mdescLeft"> </td><td class="mdescRight">Metric function for logistic regression. <a href="#a2d1571ffa794176a5dfed9d35e70fed7"></a><br/></td></tr> |
| <tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="cross__validation_8sql__in.html#ac1b5c57473ff672af45191c8d53f46ed">cv_logregr_accuracy</a> (varchar tbl_predict, varchar tbl_source, varchar col_id, varchar col_dep_var, varchar tbl_accuracy)</td></tr> |
| <tr><td class="mdescLeft"> </td><td class="mdescRight">Metric function for logistic regression. <a href="#ac1b5c57473ff672af45191c8d53f46ed"></a><br/></td></tr> |
| </table> |
| <hr/><a name="details" id="details"></a><h2>Detailed Description</h2> |
| <div class="textblock"><dl class="date"><dt><b>Date:</b></dt><dd>January 2011</dd></dl> |
| <dl class="see"><dt><b>See also:</b></dt><dd>For a brief introduction to the usage of cross validation, see the module description <a class="el" href="group__grp__validation.html">Cross Validation</a>. </dd></dl> |
| |
| <p>Definition in file <a class="el" href="cross__validation_8sql__in_source.html">cross_validation.sql_in</a>.</p> |
| </div><hr/><h2>Function Documentation</h2> |
| <a class="anchor" id="aa151eb3fa9acc7f4cc33236e22ad4362"></a><!-- doxytag: member="cross_validation.sql_in::cv_linregr_train" ref="aa151eb3fa9acc7f4cc33236e22ad4362" args="(varchar tbl_source, varchar col_ind_var, varchar col_dep_var, varchar tbl_result)" --> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">void cv_linregr_train </td> |
| <td>(</td> |
| <td class="paramtype">varchar </td> |
| <td class="paramname"><em>tbl_source</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">varchar </td> |
| <td class="paramname"><em>col_ind_var</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">varchar </td> |
| <td class="paramname"><em>col_dep_var</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">varchar </td> |
| <td class="paramname"><em>tbl_result</em> </td> |
| </tr> |
| <tr> |
| <td></td> |
| <td>)</td> |
| <td></td><td></td> |
| </tr> |
| </table> |
| </div> |
| <div class="memdoc"> |
| <dl><dt><b>Parameters:</b></dt><dd> |
| <table class="params"> |
| <tr><td class="paramname">module_name</td><td>Module to be cross validated </td></tr> |
| <tr><td class="paramname">func_args</td><td>Arguments of modelling function of the module, including the table name of data </td></tr> |
| <tr><td class="paramname">param_to_try</td><td>The name of the paramter that CV runs through </td></tr> |
| <tr><td class="paramname">param_values</td><td>The values of the parameter that CV will try </td></tr> |
| <tr><td class="paramname">data_id</td><td>Name of the unique ID associated with each row. Provide <em>NULL</em> if there is no such column in the data table </td></tr> |
| <tr><td class="paramname">id_is_random</td><td>Whether the provided ID is randomly assigned to each row </td></tr> |
| <tr><td class="paramname">validation_result</td><td>Table name to store the output of CV function, see the Output for format. It will be automatically created by CV function </td></tr> |
| <tr><td class="paramname">fold_num</td><td>How many fold cross-validation Print the help message for a given module's cross-validation. Print the supported module names for cross_validation A wrapper for linear regression </td></tr> |
| </table> |
| </dd> |
| </dl> |
| |
| <p>Definition at line <a class="el" href="cross__validation_8sql__in_source.html#l00366">366</a> of file <a class="el" href="cross__validation_8sql__in_source.html">cross_validation.sql_in</a>.</p> |
| |
| </div> |
| </div> |
| <a class="anchor" id="ac1b5c57473ff672af45191c8d53f46ed"></a><!-- doxytag: member="cross_validation.sql_in::cv_logregr_accuracy" ref="ac1b5c57473ff672af45191c8d53f46ed" args="(varchar tbl_predict, varchar tbl_source, varchar col_id, varchar col_dep_var, varchar tbl_accuracy)" --> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">void cv_logregr_accuracy </td> |
| <td>(</td> |
| <td class="paramtype">varchar </td> |
| <td class="paramname"><em>tbl_predict</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">varchar </td> |
| <td class="paramname"><em>tbl_source</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">varchar </td> |
| <td class="paramname"><em>col_id</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">varchar </td> |
| <td class="paramname"><em>col_dep_var</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">varchar </td> |
| <td class="paramname"><em>tbl_accuracy</em> </td> |
| </tr> |
| <tr> |
| <td></td> |
| <td>)</td> |
| <td></td><td></td> |
| </tr> |
| </table> |
| </div> |
| <div class="memdoc"> |
| <p>It computes the percentage of correct predictions. The result is stored in the table of tbl_accuracy </p> |
| |
| <p>Definition at line <a class="el" href="cross__validation_8sql__in_source.html#l00481">481</a> of file <a class="el" href="cross__validation_8sql__in_source.html">cross_validation.sql_in</a>.</p> |
| |
| </div> |
| </div> |
| <a class="anchor" id="ac7dbc115f0c4624ccbf62b2d5494388d"></a><!-- doxytag: member="cross_validation.sql_in::cv_logregr_predict" ref="ac7dbc115f0c4624ccbf62b2d5494388d" args="(varchar tbl_model, varchar tbl_newdata, varchar col_ind_var, varchar col_id, varchar tbl_predict)" --> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">void cv_logregr_predict </td> |
| <td>(</td> |
| <td class="paramtype">varchar </td> |
| <td class="paramname"><em>tbl_model</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">varchar </td> |
| <td class="paramname"><em>tbl_newdata</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">varchar </td> |
| <td class="paramname"><em>col_ind_var</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">varchar </td> |
| <td class="paramname"><em>col_id</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">varchar </td> |
| <td class="paramname"><em>tbl_predict</em> </td> |
| </tr> |
| <tr> |
| <td></td> |
| <td>)</td> |
| <td></td><td></td> |
| </tr> |
| </table> |
| </div> |
| <div class="memdoc"> |
| <p>This function can be used together with cross-validation </p> |
| |
| <p>Definition at line <a class="el" href="cross__validation_8sql__in_source.html#l00447">447</a> of file <a class="el" href="cross__validation_8sql__in_source.html">cross_validation.sql_in</a>.</p> |
| |
| </div> |
| </div> |
| <a class="anchor" id="a2d1571ffa794176a5dfed9d35e70fed7"></a><!-- doxytag: member="cross_validation.sql_in::logregr_accuracy" ref="a2d1571ffa794176a5dfed9d35e70fed7" args="(float8[] coef, float8[] col_ind, boolean col_dep)" --> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">integer logregr_accuracy </td> |
| <td>(</td> |
| <td class="paramtype">float8[] </td> |
| <td class="paramname"><em>coef</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">float8[] </td> |
| <td class="paramname"><em>col_ind</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">boolean </td> |
| <td class="paramname"><em>col_dep</em> </td> |
| </tr> |
| <tr> |
| <td></td> |
| <td>)</td> |
| <td></td><td></td> |
| </tr> |
| </table> |
| </div> |
| <div class="memdoc"> |
| <dl><dt><b>Parameters:</b></dt><dd> |
| <table class="params"> |
| <tr><td class="paramname">coef</td><td>Logistic fitting coefficients. Note: MADlib logregr_train function does not produce a seperate intercept term as elastic_net_train function. </td></tr> |
| <tr><td class="paramname">col_ind</td><td>Independent variable, an array </td></tr> |
| <tr><td class="paramname">col_dep</td><td>Dependent variable</td></tr> |
| </table> |
| </dd> |
| </dl> |
| <p>returns 1 if the prediction is the same as col_dep, otherwise 0 </p> |
| |
| <p>Definition at line <a class="el" href="cross__validation_8sql__in_source.html#l00467">467</a> of file <a class="el" href="cross__validation_8sql__in_source.html">cross_validation.sql_in</a>.</p> |
| |
| </div> |
| </div> |
| <a class="anchor" id="a66b3cb92a758ed6ea3b8da7c6dfa516c"></a><!-- doxytag: member="cross_validation.sql_in::logregr_predict" ref="a66b3cb92a758ed6ea3b8da7c6dfa516c" args="(float8[] coef, float8[] col_ind)" --> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">boolean logregr_predict </td> |
| <td>(</td> |
| <td class="paramtype">float8[] </td> |
| <td class="paramname"><em>coef</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">float8[] </td> |
| <td class="paramname"><em>col_ind</em> </td> |
| </tr> |
| <tr> |
| <td></td> |
| <td>)</td> |
| <td></td><td></td> |
| </tr> |
| </table> |
| </div> |
| <div class="memdoc"> |
| <dl><dt><b>Parameters:</b></dt><dd> |
| <table class="params"> |
| <tr><td class="paramname">coef</td><td>Coefficients. Note: MADlib logregr_train function does not produce a seperate intercept term as elastic_net_train function. </td></tr> |
| <tr><td class="paramname">col_ind</td><td>Independent variable, which must be an array </td></tr> |
| </table> |
| </dd> |
| </dl> |
| |
| <p>Definition at line <a class="el" href="cross__validation_8sql__in_source.html#l00434">434</a> of file <a class="el" href="cross__validation_8sql__in_source.html">cross_validation.sql_in</a>.</p> |
| |
| </div> |
| </div> |
| </div> |
| </div> |
| <div id="nav-path" class="navpath"> |
| <ul> |
| <li class="navelem"><a class="el" href="cross__validation_8sql__in.html">cross_validation.sql_in</a> </li> |
| <!-- window showing the filter options --> |
| <div id="MSearchSelectWindow" |
| onmouseover="return searchBox.OnSearchSelectShow()" |
| onmouseout="return searchBox.OnSearchSelectHide()" |
| onkeydown="return searchBox.OnSearchSelectKey(event)"> |
| <a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Functions</a></div> |
| |
| <!-- iframe showing the search results (closed by default) --> |
| <div id="MSearchResultsWindow"> |
| <iframe src="javascript:void(0)" frameborder="0" |
| name="MSearchResults" id="MSearchResults"> |
| </iframe> |
| </div> |
| |
| |
| <li class="footer">Generated on Fri May 10 2013 01:37:13 for MADlib by |
| <a href="http://www.doxygen.org/index.html"> |
| <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.5.1 </li> |
| </ul> |
| </div> |
| |
| |
| </body> |
| </html> |
