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<title>MADlib: knn.sql_in File Reference</title>
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<a href="#func-members">Functions</a> </div>
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<div class="title">knn.sql_in File Reference</div> </div>
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<p>Set of functions for k-nearest neighbors.
<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:a35157e94fa61948ea5314aef292e0fea"><td class="memItemLeft" align="right" valign="top">integer&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="knn_8sql__in.html#a35157e94fa61948ea5314aef292e0fea">__knn_validate_src</a> (varchar point_source, varchar point_column_name, varchar label_column_name, varchar test_source, varchar test_column_name, varchar test_id, varchar output_table, integer k, boolean output_neighbors, varchar fn_dist)</td></tr>
<tr class="separator:a35157e94fa61948ea5314aef292e0fea"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a687c300ef3aa00fe938a9b13fd143792"><td class="memItemLeft" align="right" valign="top">varchar&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="knn_8sql__in.html#a687c300ef3aa00fe938a9b13fd143792">knn</a> (varchar point_source, varchar point_column_name, varchar point_id, varchar label_column_name, varchar test_source, varchar test_column_name, varchar test_id, varchar output_table, integer k, boolean output_neighbors, text fn_dist, boolean weighted_avg, varchar algorithm, varchar algorithm_params)</td></tr>
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<tr class="memitem:ac42acf0f15846a4f899b6a187c58e331"><td class="memItemLeft" align="right" valign="top">varchar&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="knn_8sql__in.html#ac42acf0f15846a4f899b6a187c58e331">knn</a> (varchar point_source, varchar point_column_name, varchar point_id, varchar label_column_name, varchar test_source, varchar test_column_name, varchar test_id, varchar output_table, integer k, boolean output_neighbors, text fn_dist, boolean weighted_avg, varchar algorithm)</td></tr>
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<tr class="memitem:a8a9a0295a71263ffb66e0775e8e95d18"><td class="memItemLeft" align="right" valign="top">varchar&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="knn_8sql__in.html#a8a9a0295a71263ffb66e0775e8e95d18">knn</a> (varchar point_source, varchar point_column_name, varchar point_id, varchar label_column_name, varchar test_source, varchar test_column_name, varchar test_id, varchar output_table, integer k, boolean output_neighbors, text fn_dist)</td></tr>
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<tr class="separator:adc1c9019d0460726b18fd165ac990a7a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a51549fc4079c186114a7698ecc765358"><td class="memItemLeft" align="right" valign="top">varchar&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="knn_8sql__in.html#a51549fc4079c186114a7698ecc765358">knn</a> (varchar point_source, varchar point_column_name, varchar point_id, varchar label_column_name, varchar test_source, varchar test_column_name, varchar test_id, varchar output_table, integer k)</td></tr>
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<tr class="memitem:a42cc837c6bb36c1a6131f27cd11ebe98"><td class="memItemLeft" align="right" valign="top">varchar&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="knn_8sql__in.html#a42cc837c6bb36c1a6131f27cd11ebe98">knn</a> (varchar point_source, varchar point_column_name, varchar point_id, varchar label_column_name, varchar test_source, varchar test_column_name, varchar test_id, varchar output_table)</td></tr>
<tr class="separator:a42cc837c6bb36c1a6131f27cd11ebe98"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa50ce144a6da9dcf99730be0b91e02e3"><td class="memItemLeft" align="right" valign="top">varchar&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="knn_8sql__in.html#aa50ce144a6da9dcf99730be0b91e02e3">knn</a> (varchar message)</td></tr>
<tr class="separator:aa50ce144a6da9dcf99730be0b91e02e3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9b92399768011dbbffe7d08d2f96ff1d"><td class="memItemLeft" align="right" valign="top">varchar&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="knn_8sql__in.html#a9b92399768011dbbffe7d08d2f96ff1d">knn</a> ()</td></tr>
<tr class="separator:a9b92399768011dbbffe7d08d2f96ff1d"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at</p>
<p><a href="http://www.apache.org/licenses/LICENSE-2.0">http://www.apache.org/licenses/LICENSE-2.0</a></p>
<p>Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.</p>
<dl class="section see"><dt>See also</dt><dd>For a brief introduction to k-nearest neighbors algorithm for regression and classification, see the module description <a class="el" href="group__grp__knn.html">k-Nearest Neighbors</a>. </dd></dl>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="a35157e94fa61948ea5314aef292e0fea"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a35157e94fa61948ea5314aef292e0fea">&#9670;&nbsp;</a></span>__knn_validate_src()</h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">integer __knn_validate_src </td>
<td>(</td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_source</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>label_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_source</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_id</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>output_table</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">integer&#160;</td>
<td class="paramname"><em>k</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">boolean&#160;</td>
<td class="paramname"><em>output_neighbors</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>fn_dist</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
</div>
</div>
<a id="a687c300ef3aa00fe938a9b13fd143792"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a687c300ef3aa00fe938a9b13fd143792">&#9670;&nbsp;</a></span>knn() <span class="overload">[1/9]</span></h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">varchar knn </td>
<td>(</td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_source</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_id</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>label_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_source</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_id</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>output_table</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">integer&#160;</td>
<td class="paramname"><em>k</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">boolean&#160;</td>
<td class="paramname"><em>output_neighbors</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">text&#160;</td>
<td class="paramname"><em>fn_dist</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">boolean&#160;</td>
<td class="paramname"><em>weighted_avg</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>algorithm</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>algorithm_params</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
</div>
</div>
<a id="ac42acf0f15846a4f899b6a187c58e331"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ac42acf0f15846a4f899b6a187c58e331">&#9670;&nbsp;</a></span>knn() <span class="overload">[2/9]</span></h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">varchar knn </td>
<td>(</td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_source</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_id</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>label_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_source</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_id</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>output_table</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">integer&#160;</td>
<td class="paramname"><em>k</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">boolean&#160;</td>
<td class="paramname"><em>output_neighbors</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">text&#160;</td>
<td class="paramname"><em>fn_dist</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">boolean&#160;</td>
<td class="paramname"><em>weighted_avg</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>algorithm</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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</div><div class="memdoc">
</div>
</div>
<a id="a620b4ece3bc259eb442783f2de32aef0"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a620b4ece3bc259eb442783f2de32aef0">&#9670;&nbsp;</a></span>knn() <span class="overload">[3/9]</span></h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">varchar knn </td>
<td>(</td>
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<td class="paramname"><em>point_source</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_column_name</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_id</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>label_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_source</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_column_name</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_id</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>output_table</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">integer&#160;</td>
<td class="paramname"><em>k</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">boolean&#160;</td>
<td class="paramname"><em>output_neighbors</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">text&#160;</td>
<td class="paramname"><em>fn_dist</em>, </td>
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<tr>
<td class="paramkey"></td>
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<td class="paramtype">boolean&#160;</td>
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<a id="a8a9a0295a71263ffb66e0775e8e95d18"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a8a9a0295a71263ffb66e0775e8e95d18">&#9670;&nbsp;</a></span>knn() <span class="overload">[4/9]</span></h2>
<div class="memitem">
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<td class="memname">varchar knn </td>
<td>(</td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_source</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_column_name</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_id</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>label_column_name</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_source</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_id</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>output_table</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">integer&#160;</td>
<td class="paramname"><em>k</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">boolean&#160;</td>
<td class="paramname"><em>output_neighbors</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">text&#160;</td>
<td class="paramname"><em>fn_dist</em>&#160;</td>
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<td>)</td>
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<a id="adc1c9019d0460726b18fd165ac990a7a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#adc1c9019d0460726b18fd165ac990a7a">&#9670;&nbsp;</a></span>knn() <span class="overload">[5/9]</span></h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">varchar knn </td>
<td>(</td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_source</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_id</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>label_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_source</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_id</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>output_table</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">integer&#160;</td>
<td class="paramname"><em>k</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">boolean&#160;</td>
<td class="paramname"><em>output_neighbors</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
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<a id="a51549fc4079c186114a7698ecc765358"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a51549fc4079c186114a7698ecc765358">&#9670;&nbsp;</a></span>knn() <span class="overload">[6/9]</span></h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">varchar knn </td>
<td>(</td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_source</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_id</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>label_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_source</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_id</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>output_table</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">integer&#160;</td>
<td class="paramname"><em>k</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
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<a id="a42cc837c6bb36c1a6131f27cd11ebe98"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a42cc837c6bb36c1a6131f27cd11ebe98">&#9670;&nbsp;</a></span>knn() <span class="overload">[7/9]</span></h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">varchar knn </td>
<td>(</td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_source</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>point_id</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>label_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_source</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_column_name</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>test_id</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>output_table</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
</div>
</div>
<a id="aa50ce144a6da9dcf99730be0b91e02e3"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aa50ce144a6da9dcf99730be0b91e02e3">&#9670;&nbsp;</a></span>knn() <span class="overload">[8/9]</span></h2>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">varchar knn </td>
<td>(</td>
<td class="paramtype">varchar&#160;</td>
<td class="paramname"><em>message</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
</div>
</div>
<a id="a9b92399768011dbbffe7d08d2f96ff1d"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a9b92399768011dbbffe7d08d2f96ff1d">&#9670;&nbsp;</a></span>knn() <span class="overload">[9/9]</span></h2>
<div class="memitem">
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<table class="memname">
<tr>
<td class="memname">varchar knn </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
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