Search Results for author: Changhong Wang

Found 7 papers, 3 papers with code

Diverse Randomized Value Functions: A Provably Pessimistic Approach for Offline Reinforcement Learning

no code implementations9 Apr 2024 Xudong Yu, Chenjia Bai, Hongyi Guo, Changhong Wang, Zhen Wang

Offline Reinforcement Learning (RL) faces distributional shift and unreliable value estimation, especially for out-of-distribution (OOD) actions.

Reinforcement Learning (RL) Uncertainty Quantification

Regularized Conditional Diffusion Model for Multi-Task Preference Alignment

no code implementations7 Apr 2024 Xudong Yu, Chenjia Bai, Haoran He, Changhong Wang, Xuelong Li

Sequential decision-making is desired to align with human intents and exhibit versatility across various tasks.

D4RL Decision Making

Structure-informed Positional Encoding for Music Generation

no code implementations20 Feb 2024 Manvi Agarwal, Changhong Wang, Gaël Richard

Music generated by deep learning methods often suffers from a lack of coherence and long-term organization.

Music Generation

Transfer Learning and Bias Correction with Pre-trained Audio Embeddings

1 code implementation20 Jul 2023 Changhong Wang, Gaël Richard, Brian McFee

This approach allows representations derived for one task to be applied to another, and can result in high accuracy with less stringent training data requirements for the downstream task.

Information Retrieval Instrument Recognition +3

Mesostructures: Beyond Spectrogram Loss in Differentiable Time-Frequency Analysis

1 code implementation24 Jan 2023 Cyrus Vahidi, Han Han, Changhong Wang, Mathieu Lagrange, György Fazekas, Vincent Lostanlen

Computer musicians refer to mesostructures as the intermediate levels of articulation between the microstructure of waveshapes and the macrostructure of musical forms.

Differentiable Time-Frequency Scattering on GPU

3 code implementations18 Apr 2022 John Muradeli, Cyrus Vahidi, Changhong Wang, Han Han, Vincent Lostanlen, Mathieu Lagrange, George Fazekas

Joint time-frequency scattering (JTFS) is a convolutional operator in the time-frequency domain which extracts spectrotemporal modulations at various rates and scales.

Audio Generation Resynthesis

Joint Scattering for Automatic Chick Call Recognition

no code implementations8 Oct 2021 Changhong Wang, Emmanouil Benetos, Shuge Wang, Elisabetta Versace

Animal vocalisations contain important information about health, emotional state, and behaviour, thus can be potentially used for animal welfare monitoring.

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