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Akiko Aizawa

22 accepted papers

2026

Beyond Chains: Bridging Large Language Models and Knowledge Bases in Complex Question Answering

AAAI 2026technical

Knowledge Base Question Answering (KBQA) aims to answer natural language questions using structured knowledge from KBs. While LLM-only approaches offer generalization, they suffer from outdated knowledge, hallucinations, and lack of transparency. Chain-based KG-RAG methods address these issues by in

Cited by 0SourcePDFScholar
2026

Format Matters: The Robustness of Multimodal LLMs in Reviewing Evidence from Tables and Charts

AAAI 2026technical

With the growing number of submitted scientific papers, there is an increasing demand for systems that can assist reviewers in evaluating research claims. Experimental results are a core component of scientific work, often presented in varying formats such as tables or charts. Understanding how robu

Cited by 0SourcePDFScholar
2025

Development of Numerical Error Detection Tasks to Analyze the Numerical Capabilities of Language Models

COLING 2025main

Numbers are used to describe quantities in various scenarios in daily life; therefore, numerical errors can significantly affect the meaning of the entire sentence, and even a single-letter error can be fatal. Detecting numerical errors often requires a high level of commonsense and is difficult eve…

2025

Harnessing PDF Data for Improving Japanese Large Multimodal Models

ACL 2025finding

Large Multimodal Models (LMMs) have demonstrated strong performance in English, but their effectiveness in Japanese remains limited due to the lack of high-quality training data. Current Japanese LMMs often rely on translated English datasets, restricting their ability to capture Japan-specific cult…

2025

JMedBench: A Benchmark for Evaluating Japanese Biomedical Large Language Models

COLING 2025main

Recent developments in Japanese large language models (LLMs) primarily focus on general domains, with fewer advancements in Japanese biomedical LLMs. One obstacle is the absence of a comprehensive, large-scale benchmark for comparison. Furthermore, the resources for evaluating Japanese biomedical LL…

2025

Leveraging High-Resource English Corpora for Cross-lingual Domain Adaptation in Low-Resource Japanese Medicine via Continued Pre-training

EMNLP 2025

Limited low-resource language corpora in professional domains like medicine hinder cross-lingual domain adaptation of pre-trained large language models (PLMs). While abundant English medical corpora could complement this scarcity, the effective mixture of English and target language, including machi

2025

Table-Text Alignment: Explaining Claim Verification Against Tables in Scientific Papers

EMNLP 2025

Scientific claim verification against tables typically requires predicting whether a claim is supported or refuted given a table. However, we argue that predicting the final label alone is insufficient: it reveals little about the model’s reasoning and offers limited interpretability. To address thi

2025

The Promises and Pitfalls of LLM Annotations in Dataset Labeling: a Case Study on Media Bias Detection

NAACL 2025findings

High annotation costs from hiring or crowdsourcing complicate the creation of large, high-quality datasets needed for training reliable text classifiers. Recent research suggests using Large Language Models (LLMs) to automate the annotation process, reducing these costs while maintaining data qualit…

2024

MAGPIE: Multi-Task Analysis of Media-Bias Generalization with Pre-Trained Identification of Expressions

COLING 2024main

Media bias detection poses a complex, multifaceted problem traditionally tackled using single-task models and small in-domain datasets, consequently lacking generalizability. To address this, we introduce MAGPIE, a large-scale multi-task pre-training approach explicitly tailored for media bias detec…

Cited by 0SourcePDFScholar
2024

Unsupervised Domain Adaptation for Keyphrase Generation using Citation Contexts

EMNLP 2024finding

Adapting keyphrase generation models to new domains typically involves few-shot fine-tuning with in-domain labeled data. However, annotating documents with keyphrases is often prohibitively expensive and impractical, requiring expert annotators. This paper presents silk, an unsupervised method desig…

2023

SuperDialseg: A Large-scale Dataset for Supervised Dialogue Segmentation

EMNLP 2023long main

Dialogue segmentation is a crucial task for dialogue systems allowing a better understanding of conversational texts. Despite recent progress in unsupervised dialogue segmentation methods, their performances are limited by the lack of explicit supervised signals for training. Furthermore, the precis…

Cited by 0SourcecodeScholar
2023

Which Shortcut Solution Do Question Answering Models Prefer to Learn?

AAAI 2023technical

Question answering (QA) models for reading comprehension tend to exploit spurious correlations in training sets and thus learn shortcut solutions rather than the solutions intended by QA datasets. QA models that have learned shortcut solutions can achieve human-level performance in shortcut examples…

2022

Cross-Modal Similarity-Based Curriculum Learning for Image Captioning

EMNLP 2022main

Image captioning models require the high-level generalization ability to describe the contents of various images in words. Most existing approaches treat the image–caption pairs equally in their training without considering the differences in their learning difficulties. Several image captioning app…

Cited by 5SourcePDFScholar
2022

Debiasing Masks: A New Framework for Shortcut Mitigation in NLU

EMNLP 2022main

Debiasing language models from unwanted behaviors in Natural Language Understanding (NLU) tasks is a topic with rapidly increasing interest in the NLP community. Spurious statistical correlations in the data allow models to perform shortcuts and avoid uncovering more advanced and desirable linguisti…

2021

Effect of Visual Extensions on Natural Language Understanding in Vision-and-Language Models

EMNLP 2021main

A method for creating a vision-and-language (V&L) model is to extend a language model through structural modifications and V&L pre-training. Such an extension aims to make a V&L model inherit the capability of natural language understanding (NLU) from the original language model. To see how well thi…

2021

Embracing Ambiguity: Shifting the Training Target of NLI Models

ACL 2021short

Natural Language Inference (NLI) datasets contain examples with highly ambiguous labels. While many research works do not pay much attention to this fact, several recent efforts have been made to acknowledge and embrace the existence of ambiguity, such as UNLI and ChaosNLI. In this paper, we explore…

2021

Neural Media Bias Detection Using Distant Supervision With BABE - Bias Annotations By Experts

EMNLP 2021finding

Media coverage has a substantial effect on the public perception of events. Nevertheless, media outlets are often biased. One way to bias news articles is by altering the word choice. The automatic identification of bias by word choice is challenging, primarily due to the lack of a gold standard dat…

2020

Constructing A Multi-hop QA Dataset for Comprehensive Evaluation of Reasoning Steps

COLING 2020main

A multi-hop question answering (QA) dataset aims to test reasoning and inference skills by requiring a model to read multiple paragraphs to answer a given question. However, current datasets do not provide a complete explanation for the reasoning process from the question to the answer. Further, pre…

2020

Deconstruct to Reconstruct a Configurable Evaluation Metric for Open-Domain Dialogue Systems

COLING 2020main

Many automatic evaluation metrics have been proposed to score the overall quality of a response in open-domain dialogue. Generally, the overall quality is comprised of various aspects, such as relevancy, specificity, and empathy, and the importance of each aspect differs according to the task. For i…