Search Results for author: Annie Qu

Found 16 papers, 0 papers with code

CONCERT: Covariate-Elaborated Robust Local Information Transfer with Conditional Spike-and-Slab Prior

no code implementations30 Mar 2024 Ruqian Zhang, Yijiao Zhang, Annie Qu, Zhongyi Zhu, Juan Shen

Distinguished from existing work, CONCERT is a one-step procedure, which achieves variable selection and information transfer simultaneously.

Transfer Learning Variable Selection

Dynamic Topic Language Model on Heterogeneous Children's Mental Health Clinical Notes

no code implementations19 Dec 2023 Hanwen Ye, Tatiana Moreno, Adrianne Alpern, Louis Ehwerhemuepha, Annie Qu

However, few topic models are built for longitudinal settings, and they fail to keep consistent topics and capture temporal trajectories for each document.

Language Modelling Topic Models

Individualized Dynamic Model for Multi-resolutional Data with Application to Mobile Health

no code implementations21 Nov 2023 Jiuchen Zhang, Fei Xue, Qi Xu, Jung-Ah Lee, Annie Qu

In this paper, we propose an individualized dynamic latent factor model for irregular multi-resolution time series data to interpolate unsampled measurements of time series with low resolution.

Irregular Time Series Time Series

Stage-Aware Learning for Dynamic Treatments

no code implementations30 Oct 2023 Hanwen Ye, Wenzhuo Zhou, Ruoqing Zhu, Annie Qu

In particular, the proposed learning scheme builds a more general framework which includes the popular outcome weighted learning framework as a special case of ours.

Decision Making

Stackelberg Batch Policy Learning

no code implementations28 Sep 2023 Wenzhuo Zhou, Annie Qu

From a theoretical standpoint, we provide instance-dependent regret bounds with general function approximation, which shows that our algorithm can learn a best-effort policy that is able to compete against any comparator policy that is covered by batch data.

Decision Making Reinforcement Learning (RL)

Distributional Shift-Aware Off-Policy Interval Estimation: A Unified Error Quantification Framework

no code implementations23 Sep 2023 Wenzhuo Zhou, Yuhan Li, Ruoqing Zhu, Annie Qu

This task faces two primary challenges: providing a comprehensive and rigorous error quantification in CI estimation, and addressing the distributional shift that results from discrepancies between the distribution induced by the target policy and the offline data-generating process.

Off-policy evaluation

A Model-Agnostic Graph Neural Network for Integrating Local and Global Information

no code implementations23 Sep 2023 Wenzhuo Zhou, Annie Qu, Keiland W. Cooper, Norbert Fortin, Babak Shahbaba

Graph Neural Networks (GNNs) have achieved promising performance in a variety of graph-focused tasks.

Query-augmented Active Metric Learning

no code implementations8 Nov 2021 Yujia Deng, Yubai Yuan, Haoda Fu, Annie Qu

In particular, we augment the queried constraints by generating more pairwise labels to provide additional information in learning a metric to enhance clustering performance.

Clustering Metric Learning

High-order joint embedding for multi-level link prediction

no code implementations7 Nov 2021 Yubai Yuan, Annie Qu

Link prediction infers potential links from observed networks, and is one of the essential problems in network analyses.

Link Prediction Network Embedding +1

Estimating Optimal Infinite Horizon Dynamic Treatment Regimes via pT-Learning

no code implementations20 Oct 2021 Wenzhuo Zhou, Ruoqing Zhu, Annie Qu

To address these challenges, we propose a Proximal Temporal consistency Learning (pT-Learning) framework to estimate an optimal regime that is adaptively adjusted between deterministic and stochastic sparse policy models.

Decision Making

Dermoscopic Image Classification with Neural Style Transfer

no code implementations17 May 2021 Yutong Li, Ruoqing Zhu, Annie Qu, Mike Yeh

We represent each dermoscopic image as the style image and transfer the style of the lesion onto a homogeneous content image.

Classification Image Classification +5

Improving Sales Forecasting Accuracy: A Tensor Factorization Approach with Demand Awareness

no code implementations6 Nov 2020 Xuan Bi, Gediminas Adomavicius, William Li, Annie Qu

Due to accessible big data collections from consumers, products, and stores, advanced sales forecasting capabilities have drawn great attention from many companies especially in the retail business because of its importance in decision making.

Decision Making Management +2

Multicategory Angle-based Learning for Estimating Optimal Dynamic Treatment Regimes with Censored Data

no code implementations14 Jan 2020 Fei Xue, Yanqing Zhang, Wenzhuo Zhou, Haoda Fu, Annie Qu

An optimal dynamic treatment regime (DTR) consists of a sequence of decision rules in maximizing long-term benefits, which is applicable for chronic diseases such as HIV infection or cancer.

Individualized Multilayer Tensor Learning with An Application in Imaging Analysis

no code implementations21 Mar 2019 Xiwei Tang, Xuan Bi, Annie Qu

This work is motivated by multimodality breast cancer imaging data, which is quite challenging in that the signals of discrete tumor-associated microvesicles (TMVs) are randomly distributed with heterogeneous patterns.

Dimensionality Reduction Tensor Decomposition

Multilayer tensor factorization with applications to recommender systems

no code implementations5 Nov 2017 Xuan Bi, Annie Qu, Xiaotong Shen

Recommender systems have been widely adopted by electronic commerce and entertainment industries for individualized prediction and recommendation, which benefit consumers and improve business intelligence.

Marketing Recommendation Systems

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