Search Results for author: Ryutaro Ichise

Found 13 papers, 2 papers with code

KIQA: Knowledge-Infused Question Answering Model for Financial Table-Text Data

no code implementations DeeLIO (ACL) 2022 Rungsiman Nararatwong, Natthawut Kertkeidkachorn, Ryutaro Ichise

While entity retrieval models continue to advance their capabilities, our understanding of their wide-ranging applications is limited, especially in domain-specific settings.

Entity Linking Entity Retrieval +3

iLab at FinCausal 2022: Enhancing Causality Detection with an External Cause-Effect Knowledge Graph

no code implementations FNP (LREC) 2022 Ziwei Xu, Rungsiman Nararatwong, Natthawut Kertkeidkachorn, Ryutaro Ichise

The application of span detection grows fast along with the increasing need of understanding the causes and effects of events, especially in the finance domain.

graph construction Graph Embedding

Negative Sampling in Knowledge Graph Representation Learning: A Review

no code implementations29 Feb 2024 Tiroshan Madushanka, Ryutaro Ichise

This comprehensive survey paper systematically reviews various negative sampling (NS) methods and their contributions to the success of KGRL.

Knowledge Graph Embedding Knowledge Graphs

TuckerDNCaching: high-quality negative sampling with tucker decomposition

1 code implementation Journal of Intelligent Information Systems 2023 Tiroshan Madushanka, Ryutaro Ichise

Knowledge Graph Embedding (KGE) translates entities and relations of knowledge graphs (KGs) into a low-dimensional vector space, enabling an efficient way of predicting missing facts.

Knowledge Graph Embedding Knowledge Graphs +1

TabEAno: Table to Knowledge Graph Entity Annotation

no code implementations5 Oct 2020 Phuc Nguyen, Natthawut Kertkeidkachorn, Ryutaro Ichise, Hideaki Takeda

In the Open Data era, a large number of table resources have been made available on the Web and data portals.

MTab: Matching Tabular Data to Knowledge Graph using Probability Models

2 code implementations1 Oct 2019 Phuc Nguyen, Natthawut Kertkeidkachorn, Ryutaro Ichise, Hideaki Takeda

This paper presents the design of our system, namely MTab, for Semantic Web Challenge on Tabular Data to Knowledge Graph Matching (SemTab 2019).

Entity Typing Graph Matching +3

Combination of Unified Embedding Model and Observed Features for Knowledge Graph Completion

no code implementations9 Sep 2019 Takuma Ebisu, Ryutaro Ichise

Then, we show that these models utilize paths for link prediction and propose a method for evaluating rules based on this idea.

Link Prediction Translation

Graph Pattern Entity Ranking Model for Knowledge Graph Completion

no code implementations NAACL 2019 Takuma Ebisu, Ryutaro Ichise

To solve this problem, many knowledge graph embedding models have been developed to populate knowledge graphs and these have shown outstanding performance.

Knowledge Graph Embedding Link Prediction

EmbNum: Semantic labeling for numerical values with deep metric learning

no code implementations26 Jun 2018 Phuc Nguyen, Khai Nguyen, Ryutaro Ichise, Hideaki Takeda

Semantic labeling for numerical values is a task of assigning semantic labels to unknown numerical attributes.

Attribute Metric Learning +1

Deep Reinforcement Learning Boosted by External Knowledge

no code implementations12 Dec 2017 Nicolas Bougie, Ryutaro Ichise

Recent improvements in deep reinforcement learning have allowed to solve problems in many 2D domains such as Atari games.

Atari Games reinforcement-learning +1

TorusE: Knowledge Graph Embedding on a Lie Group

no code implementations15 Nov 2017 Takuma Ebisu, Ryutaro Ichise

To the best of our knowledge, TorusE is the first model that embeds objects on other than a real or complex vector space, and this paper is the first to formally discuss the problem of regularization of TransE.

Entity Embeddings Knowledge Graph Embedding +1

Integrating Know-How into the Linked Data Cloud

no code implementations15 Apr 2016 Paolo Pareti, Benoit Testu, Ryutaro Ichise, Ewan Klein, Adam Barker

We describe a framework for representing generic know-how as Linked Data and for automatically acquiring this representation from existing resources on the Web.

Sub-Classifier Construction for Error Correcting Output Code Using Minimum Weight Perfect Matching

no code implementations27 Dec 2013 Patoomsiri Songsiri, Thimaporn Phetkaew, Ryutaro Ichise, Boonserm Kijsirikul

We propose a method for constructing the Error Correcting Output Code to obtain the suitable combination of positive and negative classes encoded to represent binary classifiers.

Classification General Classification +1

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