Search Results for author: Yiyi Zhang

Found 8 papers, 4 papers with code

RL for Consistency Models: Faster Reward Guided Text-to-Image Generation

1 code implementation25 Mar 2024 Owen Oertell, Jonathan D. Chang, Yiyi Zhang, Kianté Brantley, Wen Sun

To overcome this limitation, consistency models proposed learning a new class of generative models that directly map noise to data, resulting in a model that can generate an image in as few as one sampling iteration.

Instruction Following reinforcement-learning +2

Leaf Cultivar Identification via Prototype-enhanced Learning

no code implementations5 May 2023 Yiyi Zhang, Zhiwen Ying, Ying Zheng, Cuiling Wu, Nannan Li, Jun Wang, Xianzhong Feng, Xiaogang Xu

Plant leaf identification is crucial for biodiversity protection and conservation and has gradually attracted the attention of academia in recent years.

Fine-Grained Image Classification

How Well Do Self-Supervised Methods Perform in Cross-Domain Few-Shot Learning?

no code implementations18 Feb 2022 Yiyi Zhang, Ying Zheng, Xiaogang Xu, Jun Wang

In this paper, we investigate the role of self-supervised representation learning in the context of CDFSL via a thorough evaluation of existing methods.

cross-domain few-shot learning Representation Learning +1

POP909: A Pop-song Dataset for Music Arrangement Generation

1 code implementation17 Aug 2020 Ziyu Wang, Ke Chen, Junyan Jiang, Yiyi Zhang, Maoran Xu, Shuqi Dai, Xianbin Gu, Gus Xia

The main body of the dataset contains the vocal melody, the lead instrument melody, and the piano accompaniment for each song in MIDI format, which are aligned to the original audio files.

Music Generation

PIANOTREE VAE: Structured Representation Learning for Polyphonic Music

2 code implementations17 Aug 2020 Ziyu Wang, Yiyi Zhang, Yixiao Zhang, Junyan Jiang, Ruihan Yang, Junbo Zhao, Gus Xia

The dominant approach for music representation learning involves the deep unsupervised model family variational autoencoder (VAE).

Music Generation Representation Learning

Spatio-Temporal Attention-Based Neural Network for Credit Card Fraud Detection

1 code implementation AAAI 2020 Dawei Cheng, Sheng Xiang, Chencheng Shang, Yiyi Zhang, Fangzhou Yang, Liqing Zhang

But manually generating features needs domain knowledge and may lay behind the modus operandi of fraud, which means we need to automatically focus on the most relevant patterns in fraudulent behavior.

Fraud Detection

Exploiting Motion Information from Unlabeled Videos for Static Image Action Recognition

no code implementations1 Dec 2019 Yiyi Zhang, Li Niu, Ziqi Pan, Meichao Luo, Jianfu Zhang, Dawei Cheng, Liqing Zhang

Specifically, the VRE module includes a proxy task which imposes pseudo motion label constraint and temporal coherence constraint on unlabeled videos, while the MRA module could predict the motion information of a static action image by exploiting unlabeled videos.

Action Recognition Self-Supervised Learning

Inspecting and Interacting with Meaningful Music Representations using VAE

no code implementations18 Apr 2019 Ruihan Yang, Tianyao Chen, Yiyi Zhang, Gus Xia

Variational Autoencoders(VAEs) have already achieved great results on image generation and recently made promising progress on music generation.

Disentanglement Image Generation +1

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