JKI4_​026_​Visitor_​Visa_​Applications

<p><strong>Challenge 26: Visitor Visa Applications</strong></p><p><strong>Level:</strong> Medium<br><br><strong>Description:&nbsp;</strong>Diplomacy and international relations are inherently complex, with each country maintaining its own unique network of relationships with others. For non-Europeans planning a trip to Europe, for instance, obtaining a Visitor Visa may be required—and acceptance rates can vary significantly depending on the applicant’s nationality. This week, we’ll use KNIME’s <strong>Network Mining extension</strong> to explore which pairs of countries show higher acceptance or refusal rates for Visitor Visa applications across Europe.<br><em>Beginner-friendly objectives:</em>(1) Read the dataset on Visitor Visa applications to different European countries. (2) Preprocess the data and derive acceptance and refusal rates for each pair of countries (where one of them is an European country).<br><em>Intermediate-friendly objective: </em>(1) Create a visualization that, given a selected European country, shows which other countries have the highest acceptance and the highest refusal visa application rates.</p>