https://nalar.dev/tags/contrastive-learning/ Recent content in Contrastive Learning on Nalar Hugo en-us Fri, 04 Sep 2026 00:00:00 +0700 https://nalar.dev/understand-contrastive-learning-with-positive-and-negative-pairs/ Fri, 04 Sep 2026 00:00:00 +0700 https://nalar.dev/understand-contrastive-learning-with-positive-and-negative-pairs/ <p>An embedding model turns an input into a vector so that useful relationships can be measured numerically. The difficult part is not producing vectors. It is teaching the geometry of the vector space: which inputs should be close, which should be far apart, and what &ldquo;similar&rdquo; should mean for the application.</p> <p><strong>Contrastive learning</strong> provides a practical answer. Instead of training only from a class label such as <code>billing</code> or <code>technical support</code>, it trains from relationships between examples. A <strong>positive pair</strong> contains examples that should have similar representations. A <strong>negative pair</strong> contains examples that should not.</p>