Search Results for author: Yifei Xu

Found 16 papers, 10 papers with code

RLTHF: Targeted Human Feedback for LLM Alignment

no code implementations19 Feb 2025 Yifei Xu, Tusher Chakraborty, Emre Kiciman, Bibek Aryal, Eduardo Rodrigues, Srinagesh Sharma, Roberto Estevao, Maria Angels de Luis Balaguer, Jessica Wolk, Rafael Padilha, Leonardo Nunes, Shobana Balakrishnan, Songwu Lu, Ranveer Chandra

Evaluations on HH-RLHF and TL;DR datasets show that RLTHF reaches full-human annotation-level alignment with only 6-7% of the human annotation effort.

CoRNStack: High-Quality Contrastive Data for Better Code Ranking

1 code implementation1 Dec 2024 Tarun Suresh, Revanth Gangi Reddy, Yifei Xu, Zach Nussbaum, Andriy Mulyar, Brandon Duderstadt, Heng Ji

Effective code retrieval plays a crucial role in advancing code generation, bug fixing, and software maintenance, particularly as software systems increase in complexity.

Bug fixing Code Generation +2

System States Forecasting of Microservices with Dynamic Spatio-Temporal Data

no code implementations15 Aug 2024 Yifei Xu, Jingguo Ge, Haina Tang, Shuai Ding, Tong Li, Hui Li

This paper introduces STMformer, a model tailored for forecasting system states in microservices environments, capable of handling multi-node and multivariate time series.

Time Series Time Series Forecasting

FIRST: Faster Improved Listwise Reranking with Single Token Decoding

1 code implementation21 Jun 2024 Revanth Gangi Reddy, JaeHyeok Doo, Yifei Xu, Md Arafat Sultan, Deevya Swain, Avirup Sil, Heng Ji

Further, we incorporate a learning-to-rank loss during training, prioritizing ranking accuracy for the more relevant passages.

Information Retrieval Language Modeling +2

Mitigate Target-level Insensitivity of Infrared Small Target Detection via Posterior Distribution Modeling

1 code implementation13 Mar 2024 Haoqing Li, Jinfu Yang, Yifei Xu, Runshi Wang

Infrared Small Target Detection (IRSTD) aims to segment small targets from infrared clutter background.

Noise Estimation

CloudEval-YAML: A Practical Benchmark for Cloud Configuration Generation

1 code implementation10 Nov 2023 Yifei Xu, Yuning Chen, Xumiao Zhang, Xianshang Lin, Pan Hu, Yunfei Ma, Songwu Lu, Wan Du, Zhuoqing Mao, Ennan Zhai, Dennis Cai

We develop the CloudEval-YAML benchmark with practicality in mind: the dataset consists of hand-written problems with unit tests targeting practical scenarios.

Benchmarking Cloud Computing +6

Click on Mask: A Labor-efficient Annotation Framework with Level Set for Infrared Small Target Detection

1 code implementation19 Oct 2023 Haoqing Li, Jinfu Yang, Yifei Xu, Runshi Wang

Due to the small size of infrared targets, manual annotation consumes more resources and restricts the development of this field.

ILNet: Low-level Matters for Salient Infrared Small Target Detection

1 code implementation24 Sep 2023 Haoqing Li, Jinfu Yang, Runshi Wang, Yifei Xu

Due to the dearth of high-level semantic information, small infrared target features are weakened in the deep layers of the CNN, which underachieves the CNN's representation ability.

Ensemble Learning

A Tale of Two Latent Flows: Learning Latent Space Normalizing Flow with Short-run Langevin Flow for Approximate Inference

no code implementations23 Jan 2023 Jianwen Xie, Yaxuan Zhu, Yifei Xu, Dingcheng Li, Ping Li

We study a normalizing flow in the latent space of a top-down generator model, in which the normalizing flow model plays the role of the informative prior model of the generator.

Anomaly Detection Image Inpainting +1

Sound2Synth: Interpreting Sound via FM Synthesizer Parameters Estimation

1 code implementation6 May 2022 Zui Chen, Yansen Jing, Shengcheng Yuan, Yifei Xu, Jian Wu, Hang Zhao

Synthesizer is a type of electronic musical instrument that is now widely used in modern music production and sound design.

Audio Classification Audio Signal Processing

SAS: Self-Augmentation Strategy for Language Model Pre-training

1 code implementation14 Jun 2021 Yifei Xu, Jingqiao Zhang, Ru He, Liangzhu Ge, Chao Yang, Cheng Yang, Ying Nian Wu

In this paper, we propose a self-augmentation strategy (SAS) where a single network is utilized for both regular pre-training and contextualized data augmentation for the training in later epochs.

Data Augmentation Language Modeling +3

Generative PointNet: Deep Energy-Based Learning on Unordered Point Sets for 3D Generation, Reconstruction and Classification

1 code implementation CVPR 2021 Jianwen Xie, Yifei Xu, Zilong Zheng, Song-Chun Zhu, Ying Nian Wu

We propose a generative model of unordered point sets, such as point clouds, in the form of an energy-based model, where the energy function is parameterized by an input-permutation-invariant bottom-up neural network.

3D Generation General Classification +3

Energy-Based Continuous Inverse Optimal Control

no code implementations10 Apr 2019 Yifei Xu, Jianwen Xie, Tianyang Zhao, Chris Baker, Yibiao Zhao, Ying Nian Wu

The problem of continuous inverse optimal control (over finite time horizon) is to learn the unknown cost function over the sequence of continuous control variables from expert demonstrations.

Autonomous Driving continuous-control +2

Multi-Agent Tensor Fusion for Contextual Trajectory Prediction

1 code implementation CVPR 2019 Tianyang Zhao, Yifei Xu, Mathew Monfort, Wongun Choi, Chris Baker, Yibiao Zhao, Yizhou Wang, Ying Nian Wu

Specifically, the model encodes multiple agents' past trajectories and the scene context into a Multi-Agent Tensor, then applies convolutional fusion to capture multiagent interactions while retaining the spatial structure of agents and the scene context.

Autonomous Driving Prediction +1

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