这篇论文解决了表格识别中自回归解码的顺序依赖问题,用非因果注意力让细胞特征序无关,推理快了3倍,识别也更准。
论文提出结构精炼模块,通过非因果注意力产生序无关的细胞特征。在ICDAR 2019和PubTables-1M两个数据集上,细胞定位和端到端识别一致提升。推理时间减少约3倍。现有方法因自回归解码导致细胞表示顺序依赖,影响全局一致性。新设计实现并行推理,同时每个细胞基于全局上下文。
Revisiting Structural Dependency in Autoregressive Multi-Task Table Recognition via Order-Independent Cell-Level Representations
Multi-task table recognition jointly addresses table structure prediction, cell localization, and cell content recognition within a unified framework. Existing approaches often rely on autoregressive decoders to generate table structures and reuse their hidden states for cell localization and content recognition. This autoregressive generation process can make cell representations order-dependent, degrading global consistency across cells. This paper proposes a structural refinement module that produces order-independent cell features through non-causal attention. This design enables parallel inference of cell contents while conditioning each cell on global context encoded in the refined features. Experiments on two large datasets demonstrate consistent gains in cell localization and end-to-end recognition, while reducing overall inference time by around threefold.