Papers › Multiplicative LSTM for sequence modelling
Multiplicative LSTM for sequence modelling
Ben Krause, Liang Lu, Iain Murray, Steve Renals
We introduce multiplicative LSTM (mLSTM), a recurrent neural network architecture for sequence modelling that combines the long short-term memory (LSTM) and multiplicative recurrent neural network architectures. mLSTM is characterised by its ability to have different recurrent transition functions for each possible input, which we argue makes it more expressive for autoregressive density estimation. We demonstrate empirically that mLSTM outperforms standard LSTM and its deep variants for a range of character level language modelling tasks. In this version of the paper, we regularise mLSTM to achieve 1.27 bits/char on text8 and 1.24 bits/char on Hutter Prize. We also apply a purely byte-level mLSTM on the WikiText-2 dataset to achieve a character level entropy of 1.26 bits/char, corresponding to a word level perplexity of 88.8, which is comparable to word level LSTMs regularised in similar ways on the same task.
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Code
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Tasks
Results from the paper archive 2025-07-28
| Task | Dataset | Model | Metric | Value | Rank at snapshot | Leaderboard | Report |
|---|---|---|---|---|---|---|---|
| Language Modelling | Hutter Prize | Large mLSTM +emb +WN +VD | Bit per Character (BPC) | 1.24 | #14 of 18 | Archive leaderboard | report |
| Language Modelling | Hutter Prize | Large mLSTM +emb +WN +VD | Number of params | 46M | #14 of 18 | Archive leaderboard | report |
| Language Modelling | Text8 | Large mLSTM +emb +WN +VD | Bit per Character (BPC) | 1.27 | #18 of 24 | Archive leaderboard | report |
| Language Modelling | Text8 | Large mLSTM +emb +WN +VD | Number of params | 45M | #18 of 24 | Archive leaderboard | report |
| Language Modelling | Text8 | Unregularised mLSTM | Bit per Character (BPC) | 1.40 | #21 of 24 | Archive leaderboard | report |
| Language Modelling | Text8 | Unregularised mLSTM | Number of params | 45M | #21 of 24 | Archive leaderboard | report |
| Language Modelling | enwik8 | Large mLSTM | Bit per Character (BPC) | 1.24 | #34 of 42 | Archive leaderboard | report |
| Language Modelling | enwik8 | Large mLSTM | Number of params | 46M | #34 of 42 | Archive leaderboard | report |
Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.
Methods
Introduced by this paper: mLSTM
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