Base44
Mini toolsSeq2Seq
By Google
A Seq2Seq LSTM pairs two recurrent networks. The encoder LSTM reads the input tokens one by one, compressing their information into hidden states and a context representation. The decoder LSTM then generates the output tokens step by step, conditioned on the previous token and the evolving hidden state. Teacher forcing is typically used during training, while inference relies on greedy decoding or beam search. Attention improves performance by letting the decoder query the encoder’s hidden states at every step, which helps on long sentences and noisy inputs. Common upgrades include embeddings, bidirectional encoders, layer stacking, and coverage terms to reduce repetition. Although Transformers now dominate many sequence tasks, Seq2Seq LSTMs remain attractive when data or compute is limited, when streaming or strict latency is important, or when stability on small datasets matters. They are straightforward to implement, tolerant of modest hardware, and still competitive for compact translation, summarization, and speech pipelines.
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Gen 7
Overview
Seq2Seq LSTM is a classic encoder-decoder model built with LSTM layers that maps a variable-length input sequence to a variable-length output sequence. It is used for machine translation, summarization, dialog, and speech tasks, often with attention for better long-range accuracy.
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Last updated: February 12, 2026
