Search Results for author: Sho Yokoi

Found 20 papers, 11 papers with code

Contrastive Learning-based Sentence Encoders Implicitly Weight Informative Words

1 code implementation24 Oct 2023 Hiroto Kurita, Goro Kobayashi, Sho Yokoi, Kentaro Inui

The performance of sentence encoders can be significantly improved through the simple practice of fine-tuning using contrastive loss.

Contrastive Learning Sentence

Norm of Word Embedding Encodes Information Gain

no code implementations19 Dec 2022 Momose Oyama, Sho Yokoi, Hidetoshi Shimodaira

Distributed representations of words encode lexical semantic information, but what type of information is encoded and how?

Informativeness Keyword Extraction +2

Improving word mover's distance by leveraging self-attention matrix

1 code implementation11 Nov 2022 Hiroaki Yamagiwa, Sho Yokoi, Hidetoshi Shimodaira

The proposed method is based on the Fused Gromov-Wasserstein distance, which simultaneously considers the similarity of the word embedding and the SAM for calculating the optimal transport between two sentences.

Paraphrase Identification Semantic Similarity +2

Subspace Representations for Soft Set Operations and Sentence Similarities

1 code implementation24 Oct 2022 Yoichi Ishibashi, Sho Yokoi, Katsuhito Sudoh, Satoshi Nakamura

In the field of natural language processing (NLP), continuous vector representations are crucial for capturing the semantic meanings of individual words.

Retrieval Semantic Textual Similarity +2

Revisiting Additive Compositionality: AND, OR and NOT Operations with Word Embeddings

no code implementations18 May 2021 Masahiro Naito, Sho Yokoi, Geewook Kim, Hidetoshi Shimodaira

(Q2) Ordinary additive compositionality can be seen as an AND operation of word meanings, but it is not well understood how other operations, such as OR and NOT, can be computed by the embeddings.

Word Embeddings

Computationally Efficient Wasserstein Loss for Structured Labels

no code implementations EACL 2021 Ayato Toyokuni, Sho Yokoi, Hisashi Kashima, Makoto Yamada

The problem of estimating the probability distribution of labels has been widely studied as a label distribution learning (LDL) problem, whose applications include age estimation, emotion analysis, and semantic segmentation.

Age Estimation Emotion Recognition +3

Efficient Estimation of Influence of a Training Instance

no code implementations EMNLP (sustainlp) 2020 Sosuke Kobayashi, Sho Yokoi, Jun Suzuki, Kentaro Inui

Understanding the influence of a training instance on a neural network model leads to improving interpretability.

Evaluation of Similarity-based Explanations

2 code implementations ICLR 2021 Kazuaki Hanawa, Sho Yokoi, Satoshi Hara, Kentaro Inui

In this study, we investigated relevance metrics that can provide reasonable explanations to users.

Word Rotator's Distance

1 code implementation EMNLP 2020 Sho Yokoi, Ryo Takahashi, Reina Akama, Jun Suzuki, Kentaro Inui

Accordingly, we propose a method that first decouples word vectors into their norm and direction, and then computes alignment-based similarity using earth mover's distance (i. e., optimal transport cost), which we refer to as word rotator's distance.

Semantic Similarity Semantic Textual Similarity +3

Attention is Not Only a Weight: Analyzing Transformers with Vector Norms

1 code implementation EMNLP 2020 Goro Kobayashi, Tatsuki Kuribayashi, Sho Yokoi, Kentaro Inui

Attention is a key component of Transformers, which have recently achieved considerable success in natural language processing.

Machine Translation Translation +1

Pointwise HSIC: A Linear-Time Kernelized Co-occurrence Norm for Sparse Linguistic Expressions

no code implementations EMNLP 2018 Sho Yokoi, Sosuke Kobayashi, Kenji Fukumizu, Jun Suzuki, Kentaro Inui

As well as deriving PMI from mutual information, we derive this new measure from the Hilbert--Schmidt independence criterion (HSIC); thus, we call the new measure the pointwise HSIC (PHSIC).

Machine Translation Sentence +2

Unsupervised Learning of Style-sensitive Word Vectors

no code implementations ACL 2018 Reina Akama, Kento Watanabe, Sho Yokoi, Sosuke Kobayashi, Kentaro Inui

This paper presents the first study aimed at capturing stylistic similarity between words in an unsupervised manner.

Word Embeddings

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