https://terms-en.ai-term-hub.com/zh/tags/lazy-learning/Recent content in Lazy Learning on 中文AI术语词典Hugozh-cnSat, 18 Jul 2026 11:44:45 +0000https://terms-en.ai-term-hub.com/zh/terms/instance_based_learning/Sat, 18 Jul 2026 11:22:25 +0000https://terms-en.ai-term-hub.com/zh/terms/instance_based_learning/<h2 id="definition">Definition</h2> <p>也称为基于记忆的学习，该技术不在训练期间构建泛化模型。相反，它存储整个训练数据集。当需要预测时，它会找到最相似的。</p> <h3 id="summary">Summary</h3> <p>一种惰性学习方法，通过将新输入与存储的训练实例进行比较来进行预测。</p> <h2 id="key-concepts">Key Concepts</h2> <ul> <li>惰性学习</li> <li>相似度度量</li> <li>K近邻 (K-Nearest Neighbors)</li> <li>基于记忆</li> </ul> <h2 id="use-cases">Use Cases</h2> <ul> <li>推荐系统</li> <li>模式识别</li> <li>中小型数据集</li> </ul> <h2 id="code-example">Code Example</h2> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-python" data-lang="python"><span style="display:flex;"><span><span style="color:#f92672">from</span> sklearn.neighbors <span style="color:#f92672">import</span> KNeighborsClassifier </span></span><span style="display:flex;"><span>knn <span style="color:#f92672">=</span> KNeighborsClassifier(n_neighbors<span style="color:#f92672">=</span><span style="color:#ae81ff">3</span>) </span></span><span style="display:flex;"><span>knn<span style="color:#f92672">.</span>fit(X_train, y_train) </span></span></code></pre></div><h2 id="related-terms">Related Terms</h2> <ul> <li><a href="https://terms-en.ai-term-hub.com/en/terms/knn-k-nearest-neighbors/">KNN (K-Nearest Neighbors)</a></li> <li><a href="https://terms-en.ai-term-hub.com/en/terms/%E7%9B%B8%E4%BC%BC%E5%BA%A6%E6%90%9C%E7%B4%A2-similarity-search/">相似度搜索 (Similarity search)</a></li> <li><a href="https://terms-en.ai-term-hub.com/en/terms/%E6%83%B0%E6%80%A7%E5%AD%A6%E4%B9%A0-lazy-learning/">惰性学习 (Lazy learning)</a></li> <li><a href="https://terms-en.ai-term-hub.com/en/terms/%E6%A0%B8%E6%96%B9%E6%B3%95-kernel-methods/">核方法 (Kernel methods)</a></li> </ul>