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<h1>cluster.c File Reference</h1> </div>
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<code>#include &quot;<a class="el" href="spp__ai_8h_source.html">spp_ai.h</a>&quot;</code><br/>
<code>#include &lt;stdio.h&gt;</code><br/>
<code>#include &lt;unistd.h&gt;</code><br/>
<code>#include &lt;limits.h&gt;</code><br/>
<code>#include &lt;pthread.h&gt;</code><br/>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="structattribute__key.html">attribute_key</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="structattribute__value.html">attribute_value</a></td></tr>
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Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cluster.html#ga81f5fa721719fdb281595a568eef2101">_heuristic_func</a> (<a class="el" href="spp__ai_8h.html#ae2ff3c6586aa2ab211a102abfde86640">cluster_type</a> type)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Function that picks up the heuristic value for a clustering attribute in according to Julisch's heuristic (ACM, Vol.2, No.3, 09 2002, pag.124). <a href="group__cluster.html#ga81f5fa721719fdb281595a568eef2101"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE <a class="el" href="struct__hierarchy__node.html">hierarchy_node</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cluster.html#ga2f1a22cfea64e4669da0467620c3e3b3">_hierarchy_node_new</a> (char *label, int min_val, int max_val)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Create a new clustering hierarchy node. <a href="group__cluster.html#ga2f1a22cfea64e4669da0467620c3e3b3"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cluster.html#ga5601a1f603d9c870ef6e2df192e30c30">_hierarchy_node_append</a> (<a class="el" href="struct__hierarchy__node.html">hierarchy_node</a> *parent, <a class="el" href="struct__hierarchy__node.html">hierarchy_node</a> *child)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Append a node to a clustering hierarchy node. <a href="group__cluster.html#ga5601a1f603d9c870ef6e2df192e30c30"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE <a class="el" href="struct__hierarchy__node.html">hierarchy_node</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cluster.html#ga6ddddcd505b1f763c339e81fc143e079">_AI_get_min_hierarchy_node</a> (int val, <a class="el" href="struct__hierarchy__node.html">hierarchy_node</a> *root)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Get the minimum node in a hierarchy tree that matches a certain value. <a href="group__cluster.html#ga6ddddcd505b1f763c339e81fc143e079"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE <a class="el" href="spp__ai_8h.html#a3e5b8192e7d9ffaf3542f1210aec18dd">BOOL</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cluster.html#ga0f91c8bfc37a3975f5c26b19fd6c5cba">_AI_equal_alarms</a> (<a class="el" href="struct__AI__snort__alert.html">AI_snort_alert</a> *a1, <a class="el" href="struct__AI__snort__alert.html">AI_snort_alert</a> *a2)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Check if two alerts are semantically equal. <a href="group__cluster.html#ga0f91c8bfc37a3975f5c26b19fd6c5cba"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cluster.html#ga8ce8e5a5d8954672297fa2dedb380dcd">_AI_merge_alerts</a> (<a class="el" href="struct__AI__snort__alert.html">AI_snort_alert</a> **log)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Merge the alerts marked as equal in the log. <a href="group__cluster.html#ga8ce8e5a5d8954672297fa2dedb380dcd"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cluster.html#ga7d151880080470b542e99643dc0426a7">_AI_print_clustered_alerts</a> (<a class="el" href="struct__AI__snort__alert.html">AI_snort_alert</a> *log, FILE *fp)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Print the clustered alerts to a log file. <a href="group__cluster.html#ga7d151880080470b542e99643dc0426a7"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE void *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cluster.html#ga8a5eae61dc9fd0f13e0acdfa5f4478e2">_AI_cluster_thread</a> (void *arg)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Thread for periodically clustering the log information. <a href="group__cluster.html#ga8a5eae61dc9fd0f13e0acdfa5f4478e2"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE <a class="el" href="spp__ai_8h.html#a3e5b8192e7d9ffaf3542f1210aec18dd">BOOL</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cluster.html#ga29c35cd6c56f54e27b5b190c6d6c487a">_AI_check_duplicate</a> (<a class="el" href="struct__hierarchy__node.html">hierarchy_node</a> *node, <a class="el" href="struct__hierarchy__node.html">hierarchy_node</a> *root)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Check if a certain node's range (minimum and maximum value) are already present in a clustering hierarchy. <a href="group__cluster.html#ga29c35cd6c56f54e27b5b190c6d6c487a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cluster.html#ga1445818b37483f78cc3fb2890155842c">AI_hierarchies_build</a> (<a class="el" href="structAI__config.html">AI_config</a> *conf, <a class="el" href="struct__hierarchy__node.html">hierarchy_node</a> **nodes, int n_nodes)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Build the clustering hierarchy trees. <a href="group__cluster.html#ga1445818b37483f78cc3fb2890155842c"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="var-members"></a>
Variables</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE <a class="el" href="struct__hierarchy__node.html">hierarchy_node</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cluster.html#ga97d35425cf5a0207fb50b64ee8cdda82">h_root</a> [CLUSTER_TYPES] = { NULL }</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE <a class="el" href="structAI__config.html">AI_config</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cluster.html#ga91458e2d34595688e39fcb63ba418849">_config</a> = NULL</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">PRIVATE <a class="el" href="struct__AI__snort__alert.html">AI_snort_alert</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cluster.html#gaaf4c19f60f48741b0890c6114dcff7d9">alert_log</a> = NULL</td></tr>
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