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Chengyi Wang

11 accepted papers

2025

DAPO: An Open-Source LLM Reinforcement Learning System at Scale

NeurIPS 2025poster

Inference scaling empowers LLMs with unprecedented reasoning ability, with reinforcement learning as the core technique to elicit complex reasoning. However, key technical details of state-of-the-art reasoning LLMs are concealed (such as in OpenAI o1 blog and DeepSeek R1 technical report), thus the…

Cited by 0SourceScholar
2025

Empowering Self-Learning of LLMs: Inner Knowledge Explicitation as a Catalyst

AAAI 2025technical

Self-learning of Large Language Models (LLMs) facilitates their advancement towards super-intelligence by training with self-synthesized experiences. However, a critical challenge is the amplification of hallucinations in generated data during iterative self-learning, underscoring the need for relia…

2023

BEATs: Audio Pre-Training with Acoustic Tokenizers

ICML 2023oral

We introduce a self-supervised learning (SSL) framework BEATs for general audio representation pre-training, where we optimize an acoustic tokenizer and an audio SSL model by iterations. Unlike the previous audio SSL models that employ reconstruction loss for pre-training, our audio SSL model is tra…

2022

Improving Noise Robustness of Contrastive Speech Representation Learning with Speech Reconstruction

ICASSP 2022accepted

Noise robustness is essential for deploying automatic speech recognition (ASR) systems in real-world environments. One way to reduce the effect of noise interference is to employ a preprocessing module that conducts speech enhancement, and then feed the enhanced speech to an ASR backend. In this wor…

Cited by 0SourceScholar
2022

Improving Self-Supervised Learning for Speech Recognition with Intermediate Layer Supervision

ICASSP 2022accepted

Recently, pioneer work finds that self-supervised pre-training methods can improve multiple downstream speech tasks, because the model utilizes bottom layers to learn speaker-related information and top layers to encode content-related information. Since the network capacity is limited, we believe t…

Cited by 0SourceScholar
2022

Large-Scale Self-Supervised Speech Representation Learning for Automatic Speaker Verification

ICASSP 2022accepted

The speech representations learned from large-scale unlabeled data have shown better generalizability than those from supervised learning and thus attract a lot of interest to be applied for various downstream tasks. In this paper, we explore the limits of speech representations learned by different…

Cited by 0SourceScholar
2022

SpeechT5: Unified-Modal Encoder-Decoder Pre-Training for Spoken Language Processing

ACL 2022long

Motivated by the success of T5 (Text-To-Text Transfer Transformer) in pre-trained natural language processing models, we propose a unified-modal SpeechT5 framework that explores the encoder-decoder pre-training for self-supervised speech/text representation learning. The SpeechT5 framework consists…

2022

Unispeech-Sat: Universal Speech Representation Learning With Speaker Aware Pre-Training

ICASSP 2022accepted

Self-supervised learning (SSL) is a long-standing goal for speech processing, since it utilizes large-scale unlabeled data and avoids extensive human labeling. Recent years have witnessed great successes in applying self-supervised learning in speech recognition, while limited exploration was attemp…

Cited by 0SourceScholar
2022

Wav2vec-Switch: Contrastive Learning from Original-Noisy Speech Pairs for Robust Speech Recognition

ICASSP 2022accepted

The goal of self-supervised learning (SSL) for automatic speech recognition (ASR) is to learn good speech representations from a large amount of unlabeled speech for the downstream ASR task. However, most SSL frameworks do not consider noise robustness which is crucial for real-world applications. I…

Cited by 66SourceScholar
2021

UniSpeech: Unified Speech Representation Learning with Labeled and Unlabeled Data

ICML 2021spotlight

In this paper, we propose a unified pre-training approach called UniSpeech to learn speech representations with both labeled and unlabeled data, in which supervised phonetic CTC learning and phonetically-aware contrastive self-supervised learning are conducted in a multi-task learning manner. The re…