Search Results for author: Chengxi Li

Found 22 papers, 5 papers with code

Error Causal inference for Multi-Fusion models

no code implementations NAACL (ALVR) 2021 Chengxi Li, Brent Harrison

In this paper, we propose an error causal inference method that could be used for finding dominant features for a faulty instance under a well-trained multi-modality input model, which could apply to any testing instance.

Caption Generation Causal Inference

Cooperative Gradient Coding for Collaborative Federated Learning

no code implementations31 Mar 2024 Shudi Weng, Chengxi Li, Ming Xiao, Mikael Skoglund

We investigate federated learning (FL) in the presence of stragglers, with emphasis on wireless scenarios where the power-constrained edge devices collaboratively train a global model on their local datasets and transmit local model updates through fading channels.

Federated Learning valid

Adaptive Coded Federated Learning: Privacy Preservation and Straggler Mitigation

no code implementations22 Mar 2024 Chengxi Li, Ming Xiao, Mikael Skoglund

In ACFL, before the training, each device uploads a coded local dataset with additive noise to the central server to generate a global coded dataset under privacy preservation requirements.

Federated Learning

Distributed Learning based on 1-Bit Gradient Coding in the Presence of Stragglers

no code implementations19 Mar 2024 Chengxi Li, Mikael Skoglund

For this problem, DL methods based on gradient coding have been widely investigated, which redundantly distribute the training data to the workers to guarantee convergence when some workers are stragglers.

Gradient Coding in Decentralized Learning for Evading Stragglers

no code implementations6 Feb 2024 Chengxi Li, Mikael Skoglund

In this paper, we consider a decentralized learning problem in the presence of stragglers.

MARIO: MAth Reasoning with code Interpreter Output -- A Reproducible Pipeline

1 code implementation16 Jan 2024 Minpeng Liao, Wei Luo, Chengxi Li, Jing Wu, Kai Fan

Large language models (LLMs) have seen considerable advancements in natural language understanding tasks, yet there remains a gap to bridge before attaining true artificial general intelligence, especially concerning shortcomings in mathematical reasoning capabilities.

GSM8K Math +2

COMIC: An Unsupervised Change Detection Method for Heterogeneous Remote Sensing Images Based on Copula Mixtures and Cycle-Consistent Adversarial Networks

no code implementations3 Apr 2023 Chengxi Li, Gang Li, Zhuoyue Wang, Xueqian Wang, Pramod K. Varshney

For this problem, an unsupervised change detection method has been proposed recently based on the image translation technique of Cycle-Consistent Adversarial Networks (CycleGANs), where one image is translated from its original modality to the modality of the other image so that the difference map can be obtained by performing arithmetical subtraction.

Change Detection Translation

Translate the Beauty in Songs: Jointly Learning to Align Melody and Translate Lyrics

no code implementations28 Mar 2023 Chengxi Li, Kai Fan, Jiajun Bu, Boxing Chen, Zhongqiang Huang, Zhi Yu

Song translation requires both translation of lyrics and alignment of music notes so that the resulting verse can be sung to the accompanying melody, which is a challenging problem that has attracted some interests in different aspects of the translation process.

Translation

DS-1000: A Natural and Reliable Benchmark for Data Science Code Generation

1 code implementation18 Nov 2022 Yuhang Lai, Chengxi Li, Yiming Wang, Tianyi Zhang, Ruiqi Zhong, Luke Zettlemoyer, Scott Wen-tau Yih, Daniel Fried, Sida Wang, Tao Yu

We introduce DS-1000, a code generation benchmark with a thousand data science problems spanning seven Python libraries, such as NumPy and Pandas.

Code Generation Memorization

Neural Network Panning: Screening the Optimal Sparse Network Before Training

1 code implementation27 Sep 2022 Xiatao Kang, Ping Li, Jiayi Yao, Chengxi Li

Pruning on neural networks before training not only compresses the original models, but also accelerates the network training phase, which has substantial application value.

Network Pruning Scheduling

Learning the Beauty in Songs: Neural Singing Voice Beautifier

3 code implementations ACL 2022 Jinglin Liu, Chengxi Li, Yi Ren, Zhiying Zhu, Zhou Zhao

Furthermore, we propose a latent-mapping algorithm in the latent space to convert the amateur vocal tone to the professional one.

Dynamic Time Warping

StyleM: Stylized Metrics for Image Captioning Built with Contrastive N-grams

no code implementations4 Jan 2022 Chengxi Li, Brent Harrison

In this paper, we build two automatic evaluation metrics for evaluating the association between a machine-generated caption and a ground truth stylized caption: OnlyStyle and StyleCIDEr.

Image Captioning

A Self-Explainable Stylish Image Captioning Framework via Multi-References

no code implementations20 Oct 2021 Chengxi Li, Brent Harrison

In this paper, we propose to build a stylish image captioning model through a Multi-style Multi modality mechanism (2M).

Image Captioning

SentiPrompt: Sentiment Knowledge Enhanced Prompt-Tuning for Aspect-Based Sentiment Analysis

no code implementations17 Sep 2021 Chengxi Li, Feiyu Gao, Jiajun Bu, Lu Xu, Xiang Chen, Yu Gu, Zirui Shao, Qi Zheng, Ningyu Zhang, Yongpan Wang, Zhi Yu

We inject sentiment knowledge regarding aspects, opinions, and polarities into prompt and explicitly model term relations via constructing consistency and polarity judgment templates from the ground truth triplets.

Aspect-Based Sentiment Analysis Aspect-Based Sentiment Analysis (ABSA) +3

DROID: Driver-centric Risk Object Identification

no code implementations24 Jun 2021 Chengxi Li, Stanley H. Chan, Yi-Ting Chen

Identification of high-risk driving situations is generally approached through collision risk estimation or accident pattern recognition.

Causal Inference Object

DiffSinger: Singing Voice Synthesis via Shallow Diffusion Mechanism

7 code implementations6 May 2021 Jinglin Liu, Chengxi Li, Yi Ren, Feiyang Chen, Zhou Zhao

Singing voice synthesis (SVS) systems are built to synthesize high-quality and expressive singing voice, in which the acoustic model generates the acoustic features (e. g., mel-spectrogram) given a music score.

Generative Adversarial Network Singing Voice Synthesis +1

3M: Multi-style image caption generation using Multi-modality features under Multi-UPDOWN model

no code implementations20 Mar 2021 Chengxi Li, Brent Harrison

In this paper, we build a multi-style generative model for stylish image captioning which uses multi-modality image features, ResNeXt features and text features generated by DenseCap.

Caption Generation Image Captioning

Decentralized Federated Learning via Mutual Knowledge Transfer

no code implementations24 Dec 2020 Chengxi Li, Gang Li, Pramod K. Varshney

In this paper, we investigate the problem of decentralized federated learning (DFL) in Internet of things (IoT) systems, where a number of IoT clients train models collectively for a common task without sharing their private training data in the absence of a central server.

Federated Learning Transfer Learning

Matching Text with Deep Mutual Information Estimation

no code implementations9 Mar 2020 Xixi Zhou, Chengxi Li, Jiajun Bu, Chengwei Yao, Keyue Shi, Zhi Yu, Zhou Yu

Our approach, Text matching with Deep Info Max (TIM), is integrated with a procedure of unsupervised learning of representations by maximizing the mutual information between text matching neural network's input and output.

Answer Selection Mutual Information Estimation +3

Who Make Drivers Stop? Towards Driver-centric Risk Assessment: Risk Object Identification via Causal Inference

no code implementations5 Mar 2020 Chengxi Li, Stanley H. Chan, Yi-Ting Chen

We formulate the task as the cause-effect problem and present a novel two-stage risk object identification framework based on causal inference with the proposed object-level manipulable driving model.

Causal Inference Object +1

Filling Conversation Ellipsis for Better Social Dialog Understanding

no code implementations25 Nov 2019 Xiyuan Zhang, Chengxi Li, Dian Yu, Samuel Davidson, Zhou Yu

We then train a prediction model using both utterances containing ellipsis and our automatically completed utterances.

Semantic Role Labeling Sentence +1

Learning 3D-aware Egocentric Spatial-Temporal Interaction via Graph Convolutional Networks

no code implementations20 Sep 2019 Chengxi Li, Yue Meng, Stanley H. Chan, Yi-Ting Chen

First, we decompose egocentric interactions into ego-thing and ego-stuff interaction, modeled by two GCNs.

Novel Concepts

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