Search Results for author: Takayuki Ito

Found 18 papers, 4 papers with code

Self-Agreement: A Framework for Fine-tuning Language Models to Find Agreement among Diverse Opinions

no code implementations19 May 2023 Shiyao Ding, Takayuki Ito

In this paper, we propose Self-Agreement, a novel framework for fine-tuning LLMs to autonomously find agreement using data generated by LLM itself.

Best-Answer Prediction in Q&A Sites Using User Information

no code implementations15 Dec 2022 Rafik Hadfi, Ahmed Moustafa, Kai Yoshino, Takayuki Ito

We address this limitation using a novel method for predicting the best answers using the questioner's background information and other features, such as the textual content or the relationships with other participants.

Community Question Answering

Theme Aspect Argumentation Model for Handling Fallacies

no code implementations30 May 2022 Ryuta Arisaka, Ryoma Nakai, Yusuke Kawamoto, Takayuki Ito

We present core formal constraints for the theme aspect argumentation model and then more formal constraints that improve its fallacy identification capability.

Marketing

Federated Learning Versus Classical Machine Learning: A Convergence Comparison

no code implementations22 Jul 2021 Muhammad Asad, Ahmed Moustafa, Takayuki Ito

Despite significant convergence, this training involves several privacy threats on participants' data when shared with the central cloud server.

BIG-bench Machine Learning Federated Learning +1

Relational Argumentation Semantics

no code implementations26 Apr 2021 Ryuta Arisaka, Takayuki Ito

In this paper, we propose a fresh perspective on argumentation semantics, to view them as a relational database.

A Robust Model for Trust Evaluation during Interactions between Agents in a Sociable Environment

no code implementations17 Apr 2021 Qin Liang, Minjie Zhang, Fenghui Ren, Takayuki Ito

Trust evaluation is an important topic in both research and applications in sociable environments.

Abstract Interpretation in Formal Argumentation: with a Galois Connection for Abstract Dialectical Frameworks and May-Must Argumentation (First Report)

no code implementations22 Jul 2020 Ryuta Arisaka, Takayuki Ito

In this context, there is a more recently proposed formalism of may-must argumentation (MMA) that enforces still local but more abstract labelling conditions.

Numerical Abstract Persuasion Argumentation for Expressing Concurrent Multi-Agent Negotiations

no code implementations23 Jan 2020 Ryuta Arisaka, Takayuki Ito

A negotiation process by 2 agents e1 and e2 can be interleaved by another negotiation process between, say, e1 and e3.

Abstract Argumentation Relation

Broadening Label-based Argumentation Semantics with May-Must Scales (May-Must Argumentation)

no code implementations16 Jan 2020 Ryuta Arisaka, Takayuki Ito

In this work, we contemplate a way of broadening it by accommodating may- and must- conditions for an argument to be accepted or rejected, as determined by the number(s) of rejected and accepted attacking arguments.

Formulating Manipulable Argumentation with Intra-/Inter-Agent Preferences

no code implementations9 Sep 2019 Ryuta Arisaka, Makoto Hagiwara, Takayuki Ito

From marketing to politics, exploitation of incomplete information through selective communication of arguments is ubiquitous.

Marketing

An Ontology to support automated negotiation

no code implementations28 Oct 2017 Susel Fernandez, Takayuki Ito

In this work we propose an ontology to support automated negotiation in multiagent systems.

Holonic Multiagent Simulation of Complex Adaptive Systems

1 code implementation1 Jun 2016 Rafik Hadfi, Takayuki Ito

We propose a holonic multiagent simulator that can simulate any complex urban environment.

Traffic Simulation in Urban Networks Using Stochastic Cell Transmission Model

1 code implementation15 Oct 2015 Rafik Hadfi, Sho Tokuda, Takayuki Ito

One of its advantages is that it can represent the uncertainty of the traffic states and the changing travel demand and supply conditions.

Complex Multi-Issue Negotiation Using Utility Hyper-Graphs

1 code implementation1 Jul 2015 Rafik Hadfi, Takayuki Ito

We evaluate the model experimentally using parameterized nonlinear utility spaces, showing that it can handle a large family of complex utility spaces by finding optimal contracts, outperforming previous sampling-based approaches.

Approximating Constraint-Based Utility Spaces Using Generalized Gaussian Mixture Models

1 code implementation1 Dec 2014 Rafik Hadfi, Takayuki Ito

Additionally, it leads us to a potential parametric model that could be used for opponent modeling in complex non-linear negotiations.

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