Search Results for author: Nobuyuki Shimizu

Found 12 papers, 3 papers with code

A Visually-grounded First-person Dialogue Dataset with Verbal and Non-verbal Responses

no code implementations EMNLP 2020 Hisashi Kamezawa, Noriki Nishida, Nobuyuki Shimizu, Takashi Miyazaki, Hideki Nakayama

The results demonstrate that first-person vision helps neural network models correctly understand human intentions, and the production of non-verbal responses is a challenging task like that of verbal responses.

How do people talk about images? A study on open-domain conversations with images.

no code implementations NAACL (ACL) 2022 Yi-Pei Chen, Nobuyuki Shimizu, Takashi Miyazaki, Hideki Nakayama

This paper explores how humans conduct conversations with images by investigating an open-domain image conversation dataset, ImageChat.

A Challenging Multimodal Video Summary: Simultaneously Extracting and Generating Keyframe-Caption Pairs from Video

1 code implementation4 Dec 2023 Keito Kudo, Haruki Nagasawa, Jun Suzuki, Nobuyuki Shimizu

This paper proposes a practical multimodal video summarization task setting and a dataset to train and evaluate the task.

Video Summarization

Off-Policy Evaluation of Ranking Policies under Diverse User Behavior

1 code implementation26 Jun 2023 Haruka Kiyohara, Masatoshi Uehara, Yusuke Narita, Nobuyuki Shimizu, Yasuo Yamamoto, Yuta Saito

We show that the resulting estimator, which we call Adaptive IPS (AIPS), can be unbiased under any complex user behavior.

Off-policy evaluation

Deep Learning Based Multi-modal Addressee Recognition in Visual Scenes with Utterances

no code implementations12 Sep 2018 Thao Minh Le, Nobuyuki Shimizu, Takashi Miyazaki, Koichi Shinoda

With the widespread use of intelligent systems, such as smart speakers, addressee recognition has become a concern in human-computer interaction, as more and more people expect such systems to understand complicated social scenes, including those outdoors, in cafeterias, and hospitals.

Pretraining Sentiment Classifiers with Unlabeled Dialog Data

no code implementations ACL 2018 Toru Shimizu, Nobuyuki Shimizu, Hayato Kobayashi

Recent studies showed that pretraining with unlabeled data via a language model can improve the performance of classification models.

Classification Decoder +4

Cross-domain Recommendation via Deep Domain Adaptation

no code implementations8 Mar 2018 Heishiro Kanagawa, Hayato Kobayashi, Nobuyuki Shimizu, Yukihiro Tagami, Taiji Suzuki

The behavior of users in certain services could be a clue that can be used to infer their preferences and may be used to make recommendations for other services they have never used.

Collaborative Filtering Denoising +2

Minimax Optimal Alternating Minimization for Kernel Nonparametric Tensor Learning

no code implementations NeurIPS 2016 Taiji Suzuki, Heishiro Kanagawa, Hayato Kobayashi, Nobuyuki Shimizu, Yukihiro Tagami

We investigate the statistical performance and computational efficiency of the alternating minimization procedure for nonparametric tensor learning.

Computational Efficiency

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