Papers by Ivan Montero
How Much Does Attention Actually Attend? Questioning the Importance of Attention in Pretrained Transformers (2022.findings-emnlp)
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| Challenge: | Pretrained language models use the attention mechanism to contextualize input inputs . but, we find that it is not as important as thought for pretrained models . |
| Approach: | They propose a probing method that replaces input-dependent attention matrices with constant ones. |
| Outcome: | The proposed method improves performance of pretrained language models without input-dependent attention. |
Sentence Bottleneck Autoencoders from Transformer Language Models (2021.emnlp-main)
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| Challenge: | Existing methods for pretraining a language model on text have been used for building models in NLP, but they do not work for sentence representations derived from pretrainer models based on tokens or basic pooling operations. |
| Approach: | They propose to build a sentence-level autoencoder from a pretrained transformer language model. |
| Outcome: | The proposed model achieves better quality than previous methods on text similarity and style transfer tasks while using fewer parameters than large pretrained models. |
Plug and Play Autoencoders for Conditional Text Generation (2020.emnlp-main)
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| Challenge: | Text autoencoders are used for conditional generation tasks such as style transfer. |
| Approach: | They propose a plug-and-play method where any pretrained autoencoder can be used and only requires learning a mapping within the embedding space. |
| Outcome: | The proposed method performs better than or comparable to strong baselines while being up to four times faster. |