Papers by Philip Pham
ReadTwice: Reading Very Large Documents with Memories (2021.naacl-main)
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| Challenge: | Existing approaches to model long-range dependencies in text are limited to 512 tokens . however, the amount of compute in attention depends quadratically on the number of tokens in an input text passage. |
| Approach: | They propose a technique that summarises text into a memory table to be used in a second read of the text. |
| Outcome: | The proposed method outperforms models of comparable size on several question answering datasets and sets a new state of the art on the NarrativeQA task, with questions about entire books. |
TopicGPT: A Prompt-based Topic Modeling Framework (2024.naacl-long)
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| Challenge: | TopicGPT uses large language models to uncover latent topics in text . topic models represent topics as bags of words that require "reading the tea leaves" topic models also offer limited control over formatting and specificity of topics . |
| Approach: | TopicGPT uses large language models to uncover latent topics in text . authors propose a prompt-based framework that produces topics that align better with human categorizations . |
| Outcome: | TopicGPT produces topics that align better with human categorizations compared to competing methods. |
ETC: Encoding Long and Structured Inputs in Transformers (2020.emnlp-main)
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Joshua Ainslie, Santiago Ontanon, Chris Alberti, Vaclav Cvicek, Zachary Fisher, Philip Pham, Anirudh Ravula, Sumit Sanghai, Qifan Wang, Li Yang
| Challenge: | Existing models for natural language processing (NLP) have been challenging to scale attention to longer inputs. |
| Approach: | They propose an extended Transformer construction architecture that scales attention to longer inputs by combining global-local attention with relative position encodings and a "Contrastive Predictive Coding" objective. |
| Outcome: | The proposed architecture scales attention to longer inputs and encodes structured inputs. |