Adaptive Input Representations for Neural Language Modeling
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Abstract (arXiv)
We introduce adaptive input representations for neural language modeling which extend the adaptive softmax of Grave et al. (2017) to input representations of variable capacity. There are several choices on how to factorize the input and output layers, and whether to model words, characters or sub-word units. We perform a systematic comparison of popular choices for a self-attentional architecture. Our experiments show that models equipped with adaptive embeddings are more than twice as fast to train than the popular character input CNN while having a lower number of parameters. On the WikiText-103 benchmark we achieve 18.7 perplexity, an improvement of 10.5 perplexity compared to the previously best published result and on the Billion Word benchmark, we achieve 23.02 perplexity.
Key facts. Cited by 226 papers in the map (data through 7 Oct 2026). First posted on arXiv 28 Sep 2018.
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Citing papers per year: 2021: 54; 2022: 49; 2023: 42; 2024: 46; 2025: 21; 2026: 14.
226 papers.
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- 2021Improving language models by retrieving from trillions of tokenscited by 1,278
- 2021Train Short, Test Long: Attention with Linear Biases Enables Input Length Extrapolationcited by 1,085
- 2023A Comprehensive Overview of Large Language Modelscited by 639
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- 2026Small-Scale Experiments: Are We There Yet?12 Aug 2026
- 2026Transforming Rank: How Architecture Navigates the Spectral Pathologies of Depth15 Jul 2026
- 2026Flexformer: Flexible Linear Transformer with Learnable Attention Kernel26 Jun 2026
- 2026Long-Context Modeling via GSS-Transformer Hybrid Architecture with Learnable Mixing15 Jun 2026
- 2026DN-Hypo-Pipeline: An AI-Driven Workflow for Generating Hypotheses using Large Language Models and Scientific Explanations7 Jun 2026
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- 2026Beyond N-gram: Data-Aware X-GRAM Extraction for Efficient Embedding Parameter Scaling23 Apr 2026
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