§ 02 · RESEARCH
Research.
INDEX
[ 08 of 08 · 4 years ]
KIND
TOPIC · LATEST FIRST
2025
2 entries2025.04
NAACL
Sentimatic: Sentiment-guided Automatic Generation of Preference Datasets for Customer Support Dialogue System
SuHyun Lee, ChangHeon Han · NAACL 2025
Automatic, sentiment-guided framework that produces large-scale preference datasets without human annotation — improves emotional appropriateness in customer-support LLMs.
Dialogue Systems
Preference Data
NLP

2025.07
ACL-W
STAR: Strategy-Aware Refinement Module in Multitask Learning for Emotional Support Conversations
SuHyun Lee, ChangHeon Han, Woohwan Jung, Minsam Ko · ACL 2025 (NLP4PI Workshop)
Disentangles decoder representations and dynamically fuses task-specific information — state of the art on the ESConv benchmark for both strategy prediction and response generation.
Emotional Support
Multitask Learning
NLP

2024
2 entries2024.06
ICASSPW
Optimizing Music Source Separation in Complex Audio Environments Through Progressive Self-Knowledge Distillation
ChangHeon Han, SuHyun Lee · ICASSP 2024 Workshops
Fine-tuning strategy for hearing-aid–oriented source separation. Softening targets with previous-epoch predictions gives +1.2 dB SDR over the baseline.
Music Source Separation
Knowledge Distillation
Audio

2024.06
KCC
ASMR Sound Generation through Attribute-based Prompt Augmentation
ChangHeon Han, Jaemyung Shin, Minsam Ko · KCC 2024 (Korea Computer Congress)
LLM-based prompt augmentation that explicitly models ASMR triggers — produces more detailed sound descriptions and improves T2A quality.
Text-to-Audio
Prompt Augmentation
ASMR
NO COVER
2023
3 entries2023.11
ISMIR
Track Role Prediction of Single-Instrumental Sequences
ChangHeon Han, SuHyun Lee, Minsam Ko · ISMIR 2023 LBD
Predicts the track role of single-instrument sequences automatically. 87% symbolic / 84% audio accuracy — reduces manual annotation in MIR pipelines.
Music Information Retrieval
Sequence Modeling

2023.01
TOOL
// PROJECT
NSynth-MIDI-Renderer for large-scale MIDI datasets
ChangHeon Han · Open-source tool
Renders MIDI into audio using NSynth instrument samples, holding one instrument preset consistent across an entire sequence — used to build large symbolic-to-audio datasets.
Music Information Retrieval
MIDI
Dataset

2023.01
TOOL
// PROJECT
MIDI-Metadata-Extractor
ChangHeon Han · Open-source tool
Splits a multi-track MIDI file into individual instrument tracks, extracts per-track metadata, and supports measure-based truncation and saving.
Music Information Retrieval
MIDI
NO COVER
2022
1 entries2022.01
TOOL
// PROJECT
Soothing Sound White Noise Generator
ChangHeon Han · Open-source tool
Soothing-sound audio generator with five distinct noise colors and three weighting filters. Copyrighted with the Korea Copyright Commission.
Audio
Signal Processing
NO COVER