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Alexander Hoyle

6 accepted papers

2025

The Medium Is Not the Message: Deconfounding Document Embeddings via Linear Concept Erasure

EMNLP 2025

Embedding-based similarity metrics between text sequences can be influenced not just by the content dimensions we most care about, but can also be biased by spurious attributes like the text’s source or language. These document confounders cause problems for many applications, but especially those t

Cited by 0SourcePDFScholar
2024

A SMART Mnemonic Sounds like “Glue Tonic”: Mixing LLMs with Student Feedback to Make Mnemonic Learning Stick

EMNLP 2024main

Keyword mnemonics are memorable explanations that link new terms to simpler keywords.Prior work generates mnemonics for students, but they do not train models using mnemonics students prefer and aid learning.We build SMART, a mnemonic generator trained on feedback from real students learning new ter…

2024

TopicGPT: A Prompt-based Topic Modeling Framework

NAACL 2024long

Topic modeling is a well-established technique for exploring text corpora. Conventional topic models (e.g., LDA) represent topics as bags of words that often require “reading the tea leaves” to interpret; additionally, they offer users minimal control over the formatting and specificity of resulting…

2023

Natural Language Decompositions of Implicit Content Enable Better Text Representations

EMNLP 2023long main

When people interpret text, they rely on inferences that go beyond the observed language itself. Inspired by this observation, we introduce a method for the analysis of text that takes implicitly communicated content explicitly into account. We use a large language model to produce sets of propositi…

Cited by 0SourcecodeScholar
2023

Revisiting Automated Topic Model Evaluation with Large Language Models

EMNLP 2023short main

Topic models help us make sense of large text collections. Automatically evaluating their output and determining the optimal number of topics are both longstanding challenges, with no effective automated solutions to date. This paper proposes using large language models (LLMs) for these tasks. We fi…

Cited by 0SourcecodeScholar
2021

Is Automated Topic Model Evaluation Broken? The Incoherence of Coherence

NeurIPS 2021spotlight

Topic model evaluation, like evaluation of other unsupervised methods, can be contentious. However, the field has coalesced around automated estimates of topic coherence, which rely on the frequency of word co-occurrences in a reference corpus. Contemporary neural topic models surpass classical ones…