activity
20222025
collaborators

5 papers

cs.CL2025

Sparse-Autoencoder-Guided Internal Representation Unlearning for Large Language Models

Tomoya Yamashita, Akira Ito, Yuuki Yamanaka +3

As large language models (LLMs) are increasingly deployed across various applications, privacy and copyright concerns have heightened the need for more effective LLM unlearning tec…

cs.CL2025

Concept Unlearning in Large Language Models via Self-Constructed Knowledge Triplets

Tomoya Yamashita, Yuuki Yamanaka, Masanori Yamada +3

Machine Unlearning (MU) has recently attracted considerable attention as a solution to privacy and copyright issues in large language models (LLMs). Existing MU methods aim to remo…

cs.LG2025

Positive-Unlabeled Diffusion Models for Preventing Sensitive Data Generation

Hiroshi Takahashi, Tomoharu Iwata, Atsutoshi Kumagai +2

Diffusion models are powerful generative models but often generate sensitive data that are unwanted by users, mainly because the unlabeled training data frequently contain such sen…

cs.HC2023

Dialogue System of Team NTT-EASE for DRC2023

Yuki Kubo, Tomoya Yamashita, Masanori Yamada

We developed a dialogue system as a team NTT-EASE in the Dialogue Robot Competition 2023 (DRC2023). We introduce a dialogue system (EASE-DRCBot) constructed for DRC2023. EASE-DRCBo…

cs.LG2022

ARDIR: Improving Robustness using Knowledge Distillation of Internal Representation

Tomokatsu Takahashi, Masanori Yamada, Yuuki Yamanaka +1

Adversarial training is the most promising method for learning robust models against adversarial examples. A recent study has shown that knowledge distillation between the same arc…