lections):</span>
<span class="sd">            Search for high utility itemsets in the given collections.</span>
<span class="sd">        mine():</span>
<span class="sd">            Start the EFIM algorithm.</span>
<span class="sd">        savePatterns(outputFile):</span>
<span class="sd">            Save the patterns discovered by the algorithm to an output file.</span>
<span class="sd">        getPatterns():</span>
<span class="sd">            Get the patterns discovered by the algorithm.</span>
<span cla