activity
20182025
most citedHitachi at MRP 2019: Unified Encoder-to-Biaffine Network for Cross-Framework Meaning Representation Parsing

5 citations · 11 across the 8 of their papers we have counts for

collaborators

8 papers

cs.AI2025

A Multimodal Benchmark for Framing of Oil & Gas Advertising and Potential Greenwashing Detection

Gaku Morio, Harri Rowlands, Dominik Stammbach +2

Companies spend large amounts of money on public relations campaigns to project a positive brand image. However, sometimes there is a mismatch between what they say and what they d…

cs.LG2024★ 2 cited

Enhancing Reasoning Capabilities of LLMs via Principled Synthetic Logic Corpus

Terufumi Morishita, Gaku Morio, Atsuki Yamaguchi +1

Large language models (LLMs) are capable of solving a wide range of tasks, yet they have struggled with reasoning. To address this, we propose $\textbf{Additional Logic Training (A…

cs.AI2023★ 2 cited

Learning Deductive Reasoning from Synthetic Corpus based on Formal Logic

Terufumi Morishita, Gaku Morio, Atsuki Yamaguchi +1

We study a synthetic corpus based approach for language models (LMs) to acquire logical deductive reasoning ability. The previous studies generated deduction examples using specifi…

cs.CL2023

How does the task complexity of masked pretraining objectives affect downstream performance?

Atsuki Yamaguchi, Hiroaki Ozaki, Terufumi Morishita +2

Masked language modeling (MLM) is a widely used self-supervised pretraining objective, where a model needs to predict an original token that is replaced with a mask given contexts.…

cs.LG2022

Rethinking Fano's Inequality in Ensemble Learning

Terufumi Morishita, Gaku Morio, Shota Horiguchi +2

We propose a fundamental theory on ensemble learning that answers the central question: what factors make an ensemble system good or bad? Previous studies used a variant of Fano's…

cs.CL2021

Team Hitachi @ AutoMin 2021: Reference-free Automatic Minuting Pipeline with Argument Structure Construction over Topic-based Summarization

Atsuki Yamaguchi, Gaku Morio, Hiroaki Ozaki +2

This paper introduces the proposed automatic minuting system of the Hitachi team for the First Shared Task on Automatic Minuting (AutoMin-2021). We utilize a reference-free approac…

cs.CL2019★ 5 cited

Hitachi at MRP 2019: Unified Encoder-to-Biaffine Network for Cross-Framework Meaning Representation Parsing

Yuta Koreeda, Gaku Morio, Terufumi Morishita +2

This paper describes the proposed system of the Hitachi team for the Cross-Framework Meaning Representation Parsing (MRP 2019) shared task. In this shared task, the participating s…

cs.CL2018★ 2 cited

End-to-End Argument Mining for Discussion Threads Based on Parallel Constrained Pointer Architecture

Gaku Morio, Katsuhide Fujita

Argument Mining (AM) is a relatively recent discipline, which concentrates on extracting claims or premises from discourses, and inferring their structures. However, many existing…