This paper proposes a tree-based convolutional neural network (TBCNN) for
discriminative sentence modeling. Our models leverage either constituency trees
or dependency trees of sentences. The tree-based convolution process extracts
sentences' structural features, and these features are aggregated by max
pooling. Such architecture allows short propagation paths between the output
layer and underlying feature detectors, which enables effective structural
feature learning and extraction. We evaluate our models on two tasks: sentiment
analysis and question classification. In both experiments, TBCNN outperforms
previous state-of-the-art results, including existing neural networks and
dedicated feature/rule engineering. We also make efforts to visualize the
tree-based convolution process, shedding light on how our models work.

本研究提出了一种基于树的卷积神经网络（TBCNN），用于区分性句子建模。文章通过 constituency trees 或 dependency trees 提取句子的结构特征，并通过最大池聚合这些特征。我们评估了我们的模型在情感分析和问题分类两个领域的表现，TBCNN 的表现均优于以前的最新结果，包括现有的神经网络和专门的特征 / 规则工程方法。我们还努力可视化基于树的卷积过程，来解释我们的模型工作原理。