Search Results for author: Xiao Fang

Found 26 papers, 12 papers with code

Short-PHD: Detecting Short LLM-generated Text with Topological Data Analysis After Off-topic Content Insertion

1 code implementation1 Apr 2025 Dongjun Wei, Minjia Mao, Xiao Fang, Michael Chau

Short-PHD stabilizes the estimation of the previous PHD method for short texts by inserting off-topic content before the given input text and identifies LLM-generated text based on an established detection threshold.

LLM-generated Text Detection Text Detection +1

A Systematic Review on Prompt Engineering in Large Language Models for K-12 STEM Education

no code implementations14 Oct 2024 Eason Chen, Danyang Wang, Luyi Xu, Chen Cao, Xiao Fang, Jionghao Lin

Large language models (LLMs) have the potential to enhance K-12 STEM education by improving both teaching and learning processes.

Prompt Engineering

Aligning Medical Images with General Knowledge from Large Language Models

1 code implementation31 Aug 2024 Xiao Fang, Yi Lin, Dong Zhang, Kwang-Ting Cheng, Hao Chen

Pre-trained large vision-language models (VLMs) like CLIP have revolutionized visual representation learning using natural language as supervisions, and demonstrated promising generalization ability.

General Knowledge Medical Image Analysis +3

Applying and Evaluating Large Language Models in Mental Health Care: A Scoping Review of Human-Assessed Generative Tasks

no code implementations21 Aug 2024 Yining Hua, Hongbin Na, Zehan Li, Fenglin Liu, Xiao Fang, David Clifton, John Torous

This scoping review aimed to assess the current generative applications of LLMs in mental health care, focusing on studies where these models were tested with human participants in real-world scenarios.

Fairness

Early Detection of Misinformation for Infodemic Management: A Domain Adaptation Approach

no code implementations2 Jun 2024 Minjia Mao, Xiaohang Zhao, Xiao Fang

The efficacy of these methods depends on their ability to mitigate both covariate shift and concept shift between the infodemic domain and the domains from which they leverage labeled information.

Domain Adaptation Management +1

A Watermark for Low-entropy and Unbiased Generation in Large Language Models

1 code implementation23 May 2024 Minjia Mao, Dongjun Wei, Zeyu Chen, Xiao Fang, Michael Chau

Moreover, we discuss the tradeoff between watermark strength and text quality for unbiased watermarks.

Federated Adaptation for Foundation Model-based Recommendations

1 code implementation8 May 2024 Chunxu Zhang, Guodong Long, Hongkuan Guo, Xiao Fang, Yang song, Zhaojie Liu, Guorui Zhou, Zijian Zhang, Yang Liu, Bo Yang

It becomes a new open challenge to enable the foundation model to capture user preference changes in a timely manner with reasonable communication and computation costs while preserving privacy.

Federated Learning model +2

A Non-Uniform Low-Light Image Enhancement Method with Multi-Scale Attention Transformer and Luminance Consistency Loss

1 code implementation27 Dec 2023 Xiao Fang, Xin Gao, Baofeng Li, Feng Zhai, Yu Qin, Zhihang Meng, Jiansheng Lu, Chun Xiao

Low-light image enhancement aims to improve the perception of images collected in dim environments and provide high-quality data support for image recognition tasks.

Low-Light Image Enhancement

Bias of AI-Generated Content: An Examination of News Produced by Large Language Models

no code implementations18 Sep 2023 Xiao Fang, Shangkun Che, Minjia Mao, Hongzhe Zhang, Ming Zhao, Xiaohang Zhao

We then apply each examined LLM to generate news content with headlines of these news articles as prompts, and evaluate the gender and racial biases of the AIGC produced by the LLM by comparing the AIGC and the original news articles.

Proactive Resource Request for Disaster Response: A Deep Learning-based Optimization Model

no code implementations31 Jul 2023 Hongzhe Zhang, Xiaohang Zhao, Xiao Fang, Bintong Chen

Prior resource management research for disaster response overlooks the problem of deciding optimal quantities of resources requested by a local agency.

Disaster Response Management +1

Boosting Convolution with Efficient MLP-Permutation for Volumetric Medical Image Segmentation

no code implementations23 Mar 2023 Yi Lin, Xiao Fang, Dong Zhang, Kwang-Ting Cheng, Hao Chen

Recently, the advent of vision Transformer (ViT) has brought substantial advancements in 3D dataset benchmarks, particularly in 3D volumetric medical image segmentation (Vol-MedSeg).

Image Segmentation Semantic Segmentation +1

Exploiting Expert Knowledge for Assigning Firms to Industries: A Novel Deep Learning Method

no code implementations11 Sep 2022 Xiaohang Zhao, Xiao Fang, Jing He, Lihua Huang

To address the limitations of existing methods, we propose a novel deep learning-based method that not only seamlessly integrates the three types of knowledge for industry assignment but also takes the time-specificity of assignment-based knowledge into account.

Decision Making Specificity

Billion-user Customer Lifetime Value Prediction: An Industrial-scale Solution from Kuaishou

no code implementations29 Aug 2022 Kunpeng Li, Guangcui Shao, Naijun Yang, Xiao Fang, Yang song

Customer Life Time Value (LTV) is the expected total revenue that a single user can bring to a business.

Value prediction

Diversity Preference-Aware Link Recommendation for Online Social Networks

no code implementations21 May 2022 Kexin Yin, Xiao Fang, Bintong Chen, Olivia Sheng

Link recommendation, which recommends links to connect unlinked online social network users, is a fundamental social network analytics problem with ample business implications.

Diversity Recommendation Systems

Posterior Consistency for Bayesian Relevance Vector Machines

no code implementations11 Feb 2022 Xiao Fang, Malay Ghosh

Statistical modeling and inference problems with sample sizes substantially smaller than the number of available covariates are challenging.

regression

Data Valuation for Vertical Federated Learning: A Model-free and Privacy-preserving Method

no code implementations15 Dec 2021 Xiao Han, Leye Wang, Junjie Wu, Xiao Fang

In response, we propose FedValue, a privacy-preserving, task-specific but model-free data valuation method for VFL, which consists of a data valuation metric and a federated computation method.

Data Valuation Privacy Preserving +1

2D-FFTLog: Efficient computation of real space covariance matrices for galaxy clustering and weak lensing

2 code implementations9 Apr 2020 Xiao Fang, Tim Eifler, Elisabeth Krause

In this paper, we introduce a 2D-FFTLog algorithm for efficient, accurate and numerically stable computation of non-Gaussian real space covariances.

Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics

Beyond Limber: Efficient computation of angular power spectra for galaxy clustering and weak lensing

5 code implementations27 Nov 2019 Xiao Fang, Elisabeth Krause, Tim Eifler, Niall MacCrann

We present a new method based on our generalized FFTLog algorithm for the efficient computation of angular power spectra beyond the Limber approximation.

Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics

Recommendation with Attribute-aware Product Networks: A Representation Learning Model

no code implementations16 Aug 2019 Guannan Liu, Liang Zhang, Junjie Wu, Xiao Fang

Specifically, eRAN first maps items connected in attribute networks to low-dimensional embedding vectors through a deep autoencoder, and then an attention mechanism is applied to model the attractions of attributes to users, from which personalized item representation can be derived.

Attribute Recommendation Systems +1

A Practically Competitive and Provably Consistent Algorithm for Uplift Modeling

no code implementations12 Sep 2017 Yan Zhao, Xiao Fang, David Simchi-Levi

The problem of constructing such models from randomized experiments data is known as Uplift Modeling in the literature.

Decision Making

Beyond linear galaxy alignments

2 code implementations30 Aug 2017 Jonathan Blazek, Niall MacCrann, M. A. Troxel, Xiao Fang

We include terms up to second order in the density and tidal fields and calculate the resulting IA contributions to two-point statistics at one-loop order.

Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies

Uplift Modeling with Multiple Treatments and General Response Types

2 code implementations23 May 2017 Yan Zhao, Xiao Fang, David Simchi-Levi

It is impossible to know whether the chosen treatment is optimal for an individual subject because response under alternative treatments is unobserved.

Decision Making

FAST-PT II: an algorithm to calculate convolution integrals of general tensor quantities in cosmological perturbation theory

2 code implementations20 Sep 2016 Xiao Fang, Jonathan A. Blazek, Joseph E. McEwen, Christopher M. Hirata

Cosmological perturbation theory is a powerful tool to predict the statistics of large-scale structure in the weakly non-linear regime, but even at 1-loop order it results in computationally expensive mode-coupling integrals.

Cosmology and Nongalactic Astrophysics

FAST-PT: a novel algorithm to calculate convolution integrals in cosmological perturbation theory

2 code implementations15 Mar 2016 Joseph E. McEwen, Xiao Fang, Christopher M. Hirata, Jonathan A. Blazek

We present a novel algorithm, FAST-PT, for performing convolution or mode-coupling integrals that appear in nonlinear cosmological perturbation theory.

Cosmology and Nongalactic Astrophysics

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