Institution profile

Hongik University

Academic institutionasia · kr
Official website
Research library15linked papers
Opportunities0open roles
Selected work

Representative Papers

Towards Value-Constrained Credit Assignment in Fully Delegated AI Cooperatives

Jun 26, 2026

This work addresses the challenge of achieving fair reward allocation and precise contribution attribution in fully delegated AI collaborative systems under heterogeneous human value constraints. The authors propose a value-constrained credit assignment framework that leverages value-conditioned gradient filtering and traversal-based learning to enable fine-grained attribution while preserving explicit gradient pathways. By integrating online marginal contribution signals with cumulative payoff settlement, the method effectively supports efficient collaboration among agents with diverse value preferences. Experimental results demonstrate that the proposed framework significantly outperforms conventional federated averaging approaches, maintaining model performance while avoiding the quality degradation commonly associated with aggregated learning.

0 citationsRead paper

TL++: Accuracy and Privacy Preserving Traversal Learning for Distributed Intelligent Systems

Jun 24, 2026

This work addresses the high communication overhead in federated learning, the inability of conventional split learning to replicate centralized mini-batch gradient dynamics, and its associated privacy risks by proposing TL++, a dual-mode traversing learning framework. TL++ constructs virtual batches across nodes to faithfully reproduce centralized training dynamics. In its base mode, it exchanges only activations and gradients at the cut layer; in its secure mode, it further integrates secret sharing to provide activation-level privacy guarantees. TL++ achieves, for the first time in split learning, accuracy nearly matching that of centralized training—reaching 91.41% (base) and 90.93% (secure) on CIFAR-10—outperforming the strongest baseline by over 12 percentage points while reducing communication overhead by 13.1×, and demonstrates strong performance on the PubMedQA task as well.

0 citationsRead paper

Field Validation of a Multi-Resolution ConvLSTM Framework for Retaining Wall Deformation Prediction

Jun 03, 2026

This study addresses the challenge of accurately predicting retaining wall deformation during staged excavation of foundation pits. The authors propose a multi-resolution ConvLSTM framework that integrates Gaussian noise-augmented numerical simulation data with a stacked ensemble strategy to model temporal dynamics across multiple time scales. Notably, this approach achieves high-precision predictions of wall deformation under diverse engineering conditions without requiring any field-measured data for training—relying solely on simulated and augmented data. Validation against monitoring data from 34 points across 11 construction sites in Korea demonstrates an average absolute error of 1.4 mm and a coefficient of determination (R²) of 0.93. The model reliably forecasts deformations induced by subsequent 5.0-meter excavation stages, significantly enhancing predictive generalizability and practical applicability in real-world geotechnical engineering scenarios.

0 citationsRead paper

Transferability of Token Usage Rights: A Design Space Analysis of Generative AI Services

Apr 29, 2026

Current generative AI platforms strictly bind user-purchased tokens to specific timeframes, accounts, and services, significantly limiting usage flexibility. Drawing on MacLean et al.’s (1991) design space analysis framework, this study systematically examines the terms of service of ChatGPT, Claude, Gemini, and Grok, reconceptualizing tokens not merely as techno-economic units but as a design element for user empowerment. The work introduces the concept of “token usage transferability” and identifies five design axes—Target, Direction, Unit, Control, and Reversibility—defining five distinct types of transferability: carry-over, co-management, transfer, conversion, and trade. This framework offers a systematic design blueprint to enhance user autonomy in generative AI ecosystems.

0 citationsRead paper
Recent publications

Latest Papers

Towards Value-Constrained Credit Assignment in Fully Delegated AI Cooperatives

Jun 26, 2026

This work addresses the challenge of achieving fair reward allocation and precise contribution attribution in fully delegated AI collaborative systems under heterogeneous human value constraints. The authors propose a value-constrained credit assignment framework that leverages value-conditioned gradient filtering and traversal-based learning to enable fine-grained attribution while preserving explicit gradient pathways. By integrating online marginal contribution signals with cumulative payoff settlement, the method effectively supports efficient collaboration among agents with diverse value preferences. Experimental results demonstrate that the proposed framework significantly outperforms conventional federated averaging approaches, maintaining model performance while avoiding the quality degradation commonly associated with aggregated learning.

0 citationsRead paper

TL++: Accuracy and Privacy Preserving Traversal Learning for Distributed Intelligent Systems

Jun 24, 2026

This work addresses the high communication overhead in federated learning, the inability of conventional split learning to replicate centralized mini-batch gradient dynamics, and its associated privacy risks by proposing TL++, a dual-mode traversing learning framework. TL++ constructs virtual batches across nodes to faithfully reproduce centralized training dynamics. In its base mode, it exchanges only activations and gradients at the cut layer; in its secure mode, it further integrates secret sharing to provide activation-level privacy guarantees. TL++ achieves, for the first time in split learning, accuracy nearly matching that of centralized training—reaching 91.41% (base) and 90.93% (secure) on CIFAR-10—outperforming the strongest baseline by over 12 percentage points while reducing communication overhead by 13.1×, and demonstrates strong performance on the PubMedQA task as well.

0 citationsRead paper

Field Validation of a Multi-Resolution ConvLSTM Framework for Retaining Wall Deformation Prediction

Jun 03, 2026

This study addresses the challenge of accurately predicting retaining wall deformation during staged excavation of foundation pits. The authors propose a multi-resolution ConvLSTM framework that integrates Gaussian noise-augmented numerical simulation data with a stacked ensemble strategy to model temporal dynamics across multiple time scales. Notably, this approach achieves high-precision predictions of wall deformation under diverse engineering conditions without requiring any field-measured data for training—relying solely on simulated and augmented data. Validation against monitoring data from 34 points across 11 construction sites in Korea demonstrates an average absolute error of 1.4 mm and a coefficient of determination (R²) of 0.93. The model reliably forecasts deformations induced by subsequent 5.0-meter excavation stages, significantly enhancing predictive generalizability and practical applicability in real-world geotechnical engineering scenarios.

0 citationsRead paper

Transferability of Token Usage Rights: A Design Space Analysis of Generative AI Services

Apr 29, 2026

Current generative AI platforms strictly bind user-purchased tokens to specific timeframes, accounts, and services, significantly limiting usage flexibility. Drawing on MacLean et al.’s (1991) design space analysis framework, this study systematically examines the terms of service of ChatGPT, Claude, Gemini, and Grok, reconceptualizing tokens not merely as techno-economic units but as a design element for user empowerment. The work introduces the concept of “token usage transferability” and identifies five design axes—Target, Direction, Unit, Control, and Reversibility—defining five distinct types of transferability: carry-over, co-management, transfer, conversion, and trade. This framework offers a systematic design blueprint to enhance user autonomy in generative AI ecosystems.

0 citationsRead paper