Papers › Seq2Edits: Sequence Transduction Using Span-level Edit Operations

Seq2Edits: Sequence Transduction Using Span-level Edit Operations

23 Sep 2020EMNLP 2020 11arXiv:2009.11136archive 2025-07-28

Felix Stahlberg, Shankar Kumar

We propose Seq2Edits, an open-vocabulary approach to sequence editing for natural language processing (NLP) tasks with a high degree of overlap between input and output texts. In this approach, each sequence-to-sequence transduction is represented as a sequence of edit operations, where each operation either replaces an entire source span with target tokens or keeps it unchanged. We evaluate our method on five NLP tasks (text normalization, sentence fusion, sentence splitting & rephrasing, text simplification, and grammatical error correction) and report competitive results across the board. For grammatical error correction, our method speeds up inference by up to 5.2x compared to full sequence models because inference time depends on the number of edits rather than the number of target tokens. For text normalization, sentence fusion, and grammatical error correction, our approach improves explainability by associating each edit operation with a human-readable tag.

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Grammatical Error CorrectionSentenceSentence FusionTAGText NormalizationText Simplification

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Introduced by this paper: Seq2Edits

Absolute Position EncodingsAdamAttentionBPEDense ConnectionsDropoutLSTMLabel SmoothingLayer NormalizationLinear LayerMulti-Head AttentionPointer NetworkPosition-Wise Feed-Forward LayerResidual ConnectionSeq2EditsSigmoid ActivationSoftmaxTanh ActivationTransformer

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