n> <span class="fl">0.9296296</span></span></code></pre></div>
<p>Now comes the difficult part: selecting a threshold. The problem is that it is not really possible to say beforehand what an appropriate threshold is. That depends on the exact problem and also depends on the number of different objects that are expected. To explain that, first a short explanation how the <code>deduplicate_equivalence</code> function that we are going to use later works. Let’s assume we have two actual town names and using 